/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/security.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-11 00:06:46,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-11 00:06:46,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-11 00:06:46,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-11 00:06:46,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-11 00:06:46,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-11 00:06:46,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-11 00:06:46,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-11 00:06:46,355 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-11 00:06:46,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-11 00:06:46,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-11 00:06:46,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-11 00:06:46,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-11 00:06:46,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-11 00:06:46,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-11 00:06:46,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-11 00:06:46,358 INFO L138 SettingsManager]: * Use SBE=true [2022-02-11 00:06:46,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-11 00:06:46,359 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-11 00:06:46,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-11 00:06:46,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-11 00:06:46,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-11 00:06:46,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-11 00:06:46,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-11 00:06:46,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-11 00:06:46,360 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-11 00:06:46,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-11 00:06:46,360 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-11 00:06:46,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-11 00:06:46,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-11 00:06:46,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-11 00:06:46,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-11 00:06:46,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-11 00:06:46,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:06:46,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-11 00:06:46,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-11 00:06:46,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-11 00:06:46,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-11 00:06:46,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-11 00:06:46,362 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-11 00:06:46,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-11 00:06:46,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-11 00:06:46,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-11 00:06:46,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-11 00:06:46,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-11 00:06:46,636 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-11 00:06:46,637 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-11 00:06:46,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl [2022-02-11 00:06:46,639 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl' [2022-02-11 00:06:46,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-11 00:06:46,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-11 00:06:46,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-11 00:06:46,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-11 00:06:46,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-11 00:06:46,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/1) ... [2022-02-11 00:06:46,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/1) ... [2022-02-11 00:06:46,685 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-11 00:06:46,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-11 00:06:46,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-11 00:06:46,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-11 00:06:46,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-11 00:06:46,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/1) ... [2022-02-11 00:06:46,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/1) ... [2022-02-11 00:06:46,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/1) ... [2022-02-11 00:06:46,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/1) ... [2022-02-11 00:06:46,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/1) ... [2022-02-11 00:06:46,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/1) ... [2022-02-11 00:06:46,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/1) ... [2022-02-11 00:06:46,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-11 00:06:46,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-11 00:06:46,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-11 00:06:46,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-11 00:06:46,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/1) ... [2022-02-11 00:06:46,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:06:46,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:46,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-11 00:06:46,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-11 00:06:46,779 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-11 00:06:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-11 00:06:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-11 00:06:46,779 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-11 00:06:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-11 00:06:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-11 00:06:46,779 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-11 00:06:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-11 00:06:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-11 00:06:46,780 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-11 00:06:46,822 INFO L234 CfgBuilder]: Building ICFG [2022-02-11 00:06:46,823 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-11 00:06:46,936 INFO L275 CfgBuilder]: Performing block encoding [2022-02-11 00:06:46,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-11 00:06:46,942 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-11 00:06:46,943 INFO L202 PluginConnector]: Adding new model security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:06:46 BoogieIcfgContainer [2022-02-11 00:06:46,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-11 00:06:46,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-11 00:06:46,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-11 00:06:46,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-11 00:06:46,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:06:46" (1/2) ... [2022-02-11 00:06:46,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653b7c11 and model type security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 12:06:46, skipping insertion in model container [2022-02-11 00:06:46,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:06:46" (2/2) ... [2022-02-11 00:06:46,955 INFO L112 eAbstractionObserver]: Analyzing ICFG security.wvr.bpl [2022-02-11 00:06:46,963 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-11 00:06:46,964 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-11 00:06:46,964 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-11 00:06:46,964 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-11 00:06:47,018 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-11 00:06:47,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-11 00:06:47,089 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-11 00:06:47,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-11 00:06:47,107 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 72 flow [2022-02-11 00:06:47,172 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 84 states, 83 states have (on average 2.1927710843373496) internal successors, (182), 83 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 83 states have (on average 2.1927710843373496) internal successors, (182), 83 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-11 00:06:47,195 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:47,196 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:47,197 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1314794411, now seen corresponding path program 1 times [2022-02-11 00:06:47,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:47,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975884278] [2022-02-11 00:06:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:47,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:47,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:47,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975884278] [2022-02-11 00:06:47,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975884278] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:47,311 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:47,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:06:47,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220398671] [2022-02-11 00:06:47,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:47,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 00:06:47,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:47,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 00:06:47,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:06:47,341 INFO L87 Difference]: Start difference. First operand has 84 states, 83 states have (on average 2.1927710843373496) internal successors, (182), 83 states have internal predecessors, (182), 0 states have call successors, (0), 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 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:47,374 INFO L93 Difference]: Finished difference Result 131 states and 269 transitions. [2022-02-11 00:06:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 00:06:47,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-11 00:06:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:47,384 INFO L225 Difference]: With dead ends: 131 [2022-02-11 00:06:47,385 INFO L226 Difference]: Without dead ends: 131 [2022-02-11 00:06:47,386 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:06:47,389 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:47,389 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 47 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:47,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-02-11 00:06:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 93. [2022-02-11 00:06:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.1847826086956523) internal successors, (201), 92 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 201 transitions. [2022-02-11 00:06:47,426 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 201 transitions. Word has length 16 [2022-02-11 00:06:47,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:47,426 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 201 transitions. [2022-02-11 00:06:47,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 201 transitions. [2022-02-11 00:06:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:06:47,428 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:47,428 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:47,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-11 00:06:47,428 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:47,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:47,429 INFO L85 PathProgramCache]: Analyzing trace with hash 220858141, now seen corresponding path program 1 times [2022-02-11 00:06:47,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:47,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462126514] [2022-02-11 00:06:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:47,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:47,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462126514] [2022-02-11 00:06:47,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462126514] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:47,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:47,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:06:47,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833718141] [2022-02-11 00:06:47,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:47,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 00:06:47,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:47,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 00:06:47,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:06:47,456 INFO L87 Difference]: Start difference. First operand 93 states and 201 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:47,529 INFO L93 Difference]: Finished difference Result 136 states and 278 transitions. [2022-02-11 00:06:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 00:06:47,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:06:47,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:47,531 INFO L225 Difference]: With dead ends: 136 [2022-02-11 00:06:47,532 INFO L226 Difference]: Without dead ends: 136 [2022-02-11 00:06:47,532 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:06:47,533 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 17 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:47,534 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 47 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-02-11 00:06:47,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 103. [2022-02-11 00:06:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 2.176470588235294) internal successors, (222), 102 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 222 transitions. [2022-02-11 00:06:47,548 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 222 transitions. Word has length 17 [2022-02-11 00:06:47,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:47,548 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 222 transitions. [2022-02-11 00:06:47,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 222 transitions. [2022-02-11 00:06:47,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:47,550 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:47,550 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:47,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-11 00:06:47,551 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:47,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:47,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1024512200, now seen corresponding path program 1 times [2022-02-11 00:06:47,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:47,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752698017] [2022-02-11 00:06:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:47,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:47,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:47,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752698017] [2022-02-11 00:06:47,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752698017] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:47,658 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:47,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-11 00:06:47,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887093122] [2022-02-11 00:06:47,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:47,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:06:47,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:06:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:06:47,660 INFO L87 Difference]: Start difference. First operand 103 states and 222 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:47,818 INFO L93 Difference]: Finished difference Result 171 states and 344 transitions. [2022-02-11 00:06:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:06:47,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:47,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:47,821 INFO L225 Difference]: With dead ends: 171 [2022-02-11 00:06:47,821 INFO L226 Difference]: Without dead ends: 161 [2022-02-11 00:06:47,821 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:06:47,823 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 40 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:47,823 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 151 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-02-11 00:06:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 118. [2022-02-11 00:06:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.1538461538461537) internal successors, (252), 117 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 252 transitions. [2022-02-11 00:06:47,838 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 252 transitions. Word has length 18 [2022-02-11 00:06:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:47,839 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 252 transitions. [2022-02-11 00:06:47,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:47,839 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 252 transitions. [2022-02-11 00:06:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:47,840 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:47,840 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:47,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-11 00:06:47,841 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:47,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1634430967, now seen corresponding path program 1 times [2022-02-11 00:06:47,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:47,842 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963519583] [2022-02-11 00:06:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:47,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:47,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963519583] [2022-02-11 00:06:47,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963519583] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:47,949 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:47,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:47,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845026393] [2022-02-11 00:06:47,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:47,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:47,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:47,952 INFO L87 Difference]: Start difference. First operand 118 states and 252 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:48,119 INFO L93 Difference]: Finished difference Result 189 states and 374 transitions. [2022-02-11 00:06:48,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:48,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:48,122 INFO L225 Difference]: With dead ends: 189 [2022-02-11 00:06:48,122 INFO L226 Difference]: Without dead ends: 156 [2022-02-11 00:06:48,123 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:06:48,137 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 57 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:48,139 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 181 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:48,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-02-11 00:06:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 113. [2022-02-11 00:06:48,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 2.1607142857142856) internal successors, (242), 112 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 242 transitions. [2022-02-11 00:06:48,148 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 242 transitions. Word has length 18 [2022-02-11 00:06:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:48,148 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 242 transitions. [2022-02-11 00:06:48,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 242 transitions. [2022-02-11 00:06:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:48,149 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:48,149 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:48,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-11 00:06:48,150 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:48,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash 123697999, now seen corresponding path program 2 times [2022-02-11 00:06:48,151 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:48,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816585912] [2022-02-11 00:06:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:48,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:48,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:48,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816585912] [2022-02-11 00:06:48,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816585912] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:48,273 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:48,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:48,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127099249] [2022-02-11 00:06:48,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:48,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:48,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:48,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:48,276 INFO L87 Difference]: Start difference. First operand 113 states and 242 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:48,413 INFO L93 Difference]: Finished difference Result 217 states and 436 transitions. [2022-02-11 00:06:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:48,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:48,415 INFO L225 Difference]: With dead ends: 217 [2022-02-11 00:06:48,416 INFO L226 Difference]: Without dead ends: 189 [2022-02-11 00:06:48,416 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:48,421 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 68 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:48,422 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 179 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:48,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-02-11 00:06:48,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 126. [2022-02-11 00:06:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.176) internal successors, (272), 125 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 272 transitions. [2022-02-11 00:06:48,442 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 272 transitions. Word has length 18 [2022-02-11 00:06:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:48,442 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 272 transitions. [2022-02-11 00:06:48,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 272 transitions. [2022-02-11 00:06:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:48,443 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:48,443 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:48,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-11 00:06:48,444 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:48,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1040616896, now seen corresponding path program 2 times [2022-02-11 00:06:48,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:48,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589659946] [2022-02-11 00:06:48,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:48,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:48,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589659946] [2022-02-11 00:06:48,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589659946] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:48,511 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:48,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-11 00:06:48,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435601016] [2022-02-11 00:06:48,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:48,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:06:48,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:48,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:06:48,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:06:48,523 INFO L87 Difference]: Start difference. First operand 126 states and 272 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:48,615 INFO L93 Difference]: Finished difference Result 208 states and 418 transitions. [2022-02-11 00:06:48,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:06:48,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:48,617 INFO L225 Difference]: With dead ends: 208 [2022-02-11 00:06:48,617 INFO L226 Difference]: Without dead ends: 199 [2022-02-11 00:06:48,618 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:06:48,622 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 45 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:48,622 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 147 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:48,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-02-11 00:06:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 130. [2022-02-11 00:06:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.193798449612403) internal successors, (283), 129 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 283 transitions. [2022-02-11 00:06:48,650 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 283 transitions. Word has length 18 [2022-02-11 00:06:48,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:48,650 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 283 transitions. [2022-02-11 00:06:48,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 283 transitions. [2022-02-11 00:06:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:48,654 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:48,654 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:48,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-11 00:06:48,654 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:48,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:48,655 INFO L85 PathProgramCache]: Analyzing trace with hash -147252898, now seen corresponding path program 3 times [2022-02-11 00:06:48,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:48,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886200287] [2022-02-11 00:06:48,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:48,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:48,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:48,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886200287] [2022-02-11 00:06:48,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886200287] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:48,720 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:48,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-11 00:06:48,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994340189] [2022-02-11 00:06:48,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:48,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:06:48,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:48,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:06:48,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:06:48,722 INFO L87 Difference]: Start difference. First operand 130 states and 283 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:48,814 INFO L93 Difference]: Finished difference Result 200 states and 407 transitions. [2022-02-11 00:06:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:06:48,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:48,816 INFO L225 Difference]: With dead ends: 200 [2022-02-11 00:06:48,816 INFO L226 Difference]: Without dead ends: 186 [2022-02-11 00:06:48,816 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:06:48,817 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 36 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:48,818 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 146 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:48,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-02-11 00:06:48,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 123. [2022-02-11 00:06:48,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.19672131147541) internal successors, (268), 122 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 268 transitions. [2022-02-11 00:06:48,824 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 268 transitions. Word has length 18 [2022-02-11 00:06:48,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:48,824 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 268 transitions. [2022-02-11 00:06:48,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:48,824 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 268 transitions. [2022-02-11 00:06:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:48,825 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:48,825 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:48,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-11 00:06:48,826 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:48,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:48,832 INFO L85 PathProgramCache]: Analyzing trace with hash -546568927, now seen corresponding path program 3 times [2022-02-11 00:06:48,832 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:48,832 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666348763] [2022-02-11 00:06:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:48,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:48,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666348763] [2022-02-11 00:06:48,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666348763] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:48,939 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:48,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:48,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178680878] [2022-02-11 00:06:48,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:48,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:48,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:48,941 INFO L87 Difference]: Start difference. First operand 123 states and 268 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:49,085 INFO L93 Difference]: Finished difference Result 217 states and 431 transitions. [2022-02-11 00:06:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:06:49,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:49,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:49,087 INFO L225 Difference]: With dead ends: 217 [2022-02-11 00:06:49,087 INFO L226 Difference]: Without dead ends: 208 [2022-02-11 00:06:49,088 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:49,088 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 78 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:49,088 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 182 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-02-11 00:06:49,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 125. [2022-02-11 00:06:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.193548387096774) internal successors, (272), 124 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 272 transitions. [2022-02-11 00:06:49,094 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 272 transitions. Word has length 18 [2022-02-11 00:06:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:49,094 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 272 transitions. [2022-02-11 00:06:49,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 272 transitions. [2022-02-11 00:06:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:49,095 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:49,095 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:49,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-11 00:06:49,095 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:49,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:49,096 INFO L85 PathProgramCache]: Analyzing trace with hash 346795071, now seen corresponding path program 4 times [2022-02-11 00:06:49,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:49,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698275178] [2022-02-11 00:06:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:49,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:49,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:49,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698275178] [2022-02-11 00:06:49,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698275178] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:49,158 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:49,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:49,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586055544] [2022-02-11 00:06:49,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:49,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:49,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:49,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:49,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:49,159 INFO L87 Difference]: Start difference. First operand 125 states and 272 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:49,288 INFO L93 Difference]: Finished difference Result 210 states and 422 transitions. [2022-02-11 00:06:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:06:49,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:49,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:49,290 INFO L225 Difference]: With dead ends: 210 [2022-02-11 00:06:49,290 INFO L226 Difference]: Without dead ends: 191 [2022-02-11 00:06:49,291 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:49,291 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 62 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:49,291 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 184 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-02-11 00:06:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 110. [2022-02-11 00:06:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.18348623853211) internal successors, (238), 109 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 238 transitions. [2022-02-11 00:06:49,296 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 238 transitions. Word has length 18 [2022-02-11 00:06:49,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:49,296 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 238 transitions. [2022-02-11 00:06:49,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,296 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 238 transitions. [2022-02-11 00:06:49,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:49,297 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:49,297 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:49,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-11 00:06:49,297 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:49,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:49,298 INFO L85 PathProgramCache]: Analyzing trace with hash -62451761, now seen corresponding path program 5 times [2022-02-11 00:06:49,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:49,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068266456] [2022-02-11 00:06:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:49,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:49,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:49,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068266456] [2022-02-11 00:06:49,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068266456] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:49,364 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:49,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:49,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499701324] [2022-02-11 00:06:49,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:49,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:49,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:49,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:49,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:49,366 INFO L87 Difference]: Start difference. First operand 110 states and 238 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:49,466 INFO L93 Difference]: Finished difference Result 164 states and 328 transitions. [2022-02-11 00:06:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:49,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:49,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:49,467 INFO L225 Difference]: With dead ends: 164 [2022-02-11 00:06:49,468 INFO L226 Difference]: Without dead ends: 136 [2022-02-11 00:06:49,468 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:49,468 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 64 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:49,469 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 173 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-02-11 00:06:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2022-02-11 00:06:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.1376146788990824) internal successors, (233), 109 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 233 transitions. [2022-02-11 00:06:49,473 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 233 transitions. Word has length 18 [2022-02-11 00:06:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:49,474 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 233 transitions. [2022-02-11 00:06:49,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 233 transitions. [2022-02-11 00:06:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:49,474 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:49,475 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:49,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-11 00:06:49,475 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:49,475 INFO L85 PathProgramCache]: Analyzing trace with hash -732718687, now seen corresponding path program 6 times [2022-02-11 00:06:49,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:49,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446121020] [2022-02-11 00:06:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:49,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:49,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:49,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446121020] [2022-02-11 00:06:49,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446121020] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:49,562 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:49,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:49,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165495981] [2022-02-11 00:06:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:49,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:49,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:49,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:49,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:49,563 INFO L87 Difference]: Start difference. First operand 110 states and 233 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:49,679 INFO L93 Difference]: Finished difference Result 169 states and 326 transitions. [2022-02-11 00:06:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:49,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:49,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:49,681 INFO L225 Difference]: With dead ends: 169 [2022-02-11 00:06:49,681 INFO L226 Difference]: Without dead ends: 160 [2022-02-11 00:06:49,682 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:49,682 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 73 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:49,683 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 170 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-02-11 00:06:49,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 112. [2022-02-11 00:06:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.135135135135135) internal successors, (237), 111 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 237 transitions. [2022-02-11 00:06:49,688 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 237 transitions. Word has length 18 [2022-02-11 00:06:49,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:49,688 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 237 transitions. [2022-02-11 00:06:49,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 237 transitions. [2022-02-11 00:06:49,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:49,689 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:49,689 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:49,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-11 00:06:49,690 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash 160645311, now seen corresponding path program 7 times [2022-02-11 00:06:49,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:49,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677498258] [2022-02-11 00:06:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:49,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:49,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:49,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677498258] [2022-02-11 00:06:49,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677498258] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:49,754 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:49,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:49,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671466168] [2022-02-11 00:06:49,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:49,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:49,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:49,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:49,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:49,756 INFO L87 Difference]: Start difference. First operand 112 states and 237 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:49,860 INFO L93 Difference]: Finished difference Result 156 states and 307 transitions. [2022-02-11 00:06:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:49,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:49,861 INFO L225 Difference]: With dead ends: 156 [2022-02-11 00:06:49,861 INFO L226 Difference]: Without dead ends: 139 [2022-02-11 00:06:49,861 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:49,862 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 57 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:49,862 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 167 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-02-11 00:06:49,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 101. [2022-02-11 00:06:49,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.1) internal successors, (210), 100 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 210 transitions. [2022-02-11 00:06:49,867 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 210 transitions. Word has length 18 [2022-02-11 00:06:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:49,868 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 210 transitions. [2022-02-11 00:06:49,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:49,868 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 210 transitions. [2022-02-11 00:06:49,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:49,869 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:49,869 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:49,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-11 00:06:49,870 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:49,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1835169788, now seen corresponding path program 4 times [2022-02-11 00:06:49,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:49,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581616419] [2022-02-11 00:06:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:49,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:49,952 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:49,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581616419] [2022-02-11 00:06:49,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581616419] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:49,952 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:49,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-11 00:06:49,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977017907] [2022-02-11 00:06:49,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:49,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:06:49,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:49,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:06:49,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:06:49,954 INFO L87 Difference]: Start difference. First operand 101 states and 210 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:50,023 INFO L93 Difference]: Finished difference Result 156 states and 303 transitions. [2022-02-11 00:06:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:06:50,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:50,026 INFO L225 Difference]: With dead ends: 156 [2022-02-11 00:06:50,026 INFO L226 Difference]: Without dead ends: 147 [2022-02-11 00:06:50,026 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:06:50,027 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 42 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:50,027 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 147 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-02-11 00:06:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 110. [2022-02-11 00:06:50,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.091743119266055) internal successors, (228), 109 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 228 transitions. [2022-02-11 00:06:50,032 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 228 transitions. Word has length 18 [2022-02-11 00:06:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:50,033 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 228 transitions. [2022-02-11 00:06:50,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 228 transitions. [2022-02-11 00:06:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:50,035 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:50,035 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:50,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-11 00:06:50,036 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:50,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1156501154, now seen corresponding path program 5 times [2022-02-11 00:06:50,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:50,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411119382] [2022-02-11 00:06:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:50,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:50,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:50,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411119382] [2022-02-11 00:06:50,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411119382] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:50,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:50,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-11 00:06:50,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136854447] [2022-02-11 00:06:50,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:50,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:06:50,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:50,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:06:50,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:06:50,111 INFO L87 Difference]: Start difference. First operand 110 states and 228 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:50,180 INFO L93 Difference]: Finished difference Result 175 states and 330 transitions. [2022-02-11 00:06:50,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:06:50,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:50,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:50,182 INFO L225 Difference]: With dead ends: 175 [2022-02-11 00:06:50,182 INFO L226 Difference]: Without dead ends: 166 [2022-02-11 00:06:50,182 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:06:50,183 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 47 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:50,183 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 142 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-02-11 00:06:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 112. [2022-02-11 00:06:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.09009009009009) internal successors, (232), 111 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 232 transitions. [2022-02-11 00:06:50,188 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 232 transitions. Word has length 18 [2022-02-11 00:06:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:50,188 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 232 transitions. [2022-02-11 00:06:50,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 232 transitions. [2022-02-11 00:06:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:50,190 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:50,190 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:50,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-11 00:06:50,190 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:50,191 INFO L85 PathProgramCache]: Analyzing trace with hash 774327010, now seen corresponding path program 6 times [2022-02-11 00:06:50,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:50,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750871687] [2022-02-11 00:06:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:50,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:50,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:50,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750871687] [2022-02-11 00:06:50,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750871687] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:50,246 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:50,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-11 00:06:50,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011284465] [2022-02-11 00:06:50,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:50,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:06:50,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:50,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:06:50,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:06:50,247 INFO L87 Difference]: Start difference. First operand 112 states and 232 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:50,311 INFO L93 Difference]: Finished difference Result 160 states and 308 transitions. [2022-02-11 00:06:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:06:50,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:50,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:50,313 INFO L225 Difference]: With dead ends: 160 [2022-02-11 00:06:50,313 INFO L226 Difference]: Without dead ends: 145 [2022-02-11 00:06:50,315 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:06:50,316 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 35 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:50,316 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 140 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:50,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-02-11 00:06:50,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 105. [2022-02-11 00:06:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 2.0865384615384617) internal successors, (217), 104 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 217 transitions. [2022-02-11 00:06:50,320 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 217 transitions. Word has length 18 [2022-02-11 00:06:50,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:50,320 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 217 transitions. [2022-02-11 00:06:50,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,321 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 217 transitions. [2022-02-11 00:06:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:50,321 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:50,321 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:50,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-11 00:06:50,321 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:50,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:50,322 INFO L85 PathProgramCache]: Analyzing trace with hash 498525861, now seen corresponding path program 8 times [2022-02-11 00:06:50,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:50,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147082451] [2022-02-11 00:06:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:50,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:50,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:50,395 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:50,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147082451] [2022-02-11 00:06:50,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147082451] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:50,396 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:50,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:50,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494783037] [2022-02-11 00:06:50,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:50,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:50,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:50,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:50,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:50,397 INFO L87 Difference]: Start difference. First operand 105 states and 217 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:50,487 INFO L93 Difference]: Finished difference Result 129 states and 257 transitions. [2022-02-11 00:06:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:50,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:50,490 INFO L225 Difference]: With dead ends: 129 [2022-02-11 00:06:50,490 INFO L226 Difference]: Without dead ends: 120 [2022-02-11 00:06:50,491 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:50,491 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 63 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:50,491 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 176 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-02-11 00:06:50,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 99. [2022-02-11 00:06:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.1020408163265305) internal successors, (206), 98 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 206 transitions. [2022-02-11 00:06:50,495 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 206 transitions. Word has length 18 [2022-02-11 00:06:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:50,495 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 206 transitions. [2022-02-11 00:06:50,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 206 transitions. [2022-02-11 00:06:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:50,496 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:50,496 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:50,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-11 00:06:50,496 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:50,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:50,497 INFO L85 PathProgramCache]: Analyzing trace with hash -804770493, now seen corresponding path program 9 times [2022-02-11 00:06:50,497 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:50,497 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904938146] [2022-02-11 00:06:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:50,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:50,568 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:50,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904938146] [2022-02-11 00:06:50,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904938146] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:50,568 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:50,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:50,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462081807] [2022-02-11 00:06:50,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:50,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:50,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:50,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:50,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:50,571 INFO L87 Difference]: Start difference. First operand 99 states and 206 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:50,667 INFO L93 Difference]: Finished difference Result 144 states and 278 transitions. [2022-02-11 00:06:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:50,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:50,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:50,668 INFO L225 Difference]: With dead ends: 144 [2022-02-11 00:06:50,668 INFO L226 Difference]: Without dead ends: 135 [2022-02-11 00:06:50,668 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:50,669 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 68 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:50,669 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 170 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-02-11 00:06:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 98. [2022-02-11 00:06:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.082474226804124) internal successors, (202), 97 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 202 transitions. [2022-02-11 00:06:50,673 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 202 transitions. Word has length 18 [2022-02-11 00:06:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:50,673 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 202 transitions. [2022-02-11 00:06:50,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 202 transitions. [2022-02-11 00:06:50,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:50,673 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:50,674 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:50,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-11 00:06:50,674 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:50,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:50,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1186944637, now seen corresponding path program 10 times [2022-02-11 00:06:50,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:50,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787358741] [2022-02-11 00:06:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:50,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:50,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:50,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787358741] [2022-02-11 00:06:50,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787358741] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:50,727 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:50,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:50,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564406955] [2022-02-11 00:06:50,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:50,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:50,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:50,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:50,728 INFO L87 Difference]: Start difference. First operand 98 states and 202 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:50,820 INFO L93 Difference]: Finished difference Result 127 states and 253 transitions. [2022-02-11 00:06:50,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:50,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:50,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:50,821 INFO L225 Difference]: With dead ends: 127 [2022-02-11 00:06:50,821 INFO L226 Difference]: Without dead ends: 116 [2022-02-11 00:06:50,821 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:50,822 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 52 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:50,822 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 167 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:50,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-02-11 00:06:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 93. [2022-02-11 00:06:50,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.0760869565217392) internal successors, (191), 92 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 191 transitions. [2022-02-11 00:06:50,825 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 191 transitions. Word has length 18 [2022-02-11 00:06:50,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:50,825 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 191 transitions. [2022-02-11 00:06:50,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,826 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 191 transitions. [2022-02-11 00:06:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:50,826 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:50,826 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:50,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-11 00:06:50,826 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 579579833, now seen corresponding path program 1 times [2022-02-11 00:06:50,827 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:50,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68822469] [2022-02-11 00:06:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:50,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:50,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68822469] [2022-02-11 00:06:50,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68822469] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:50,894 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:50,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:50,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169995063] [2022-02-11 00:06:50,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:50,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:50,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:50,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:50,896 INFO L87 Difference]: Start difference. First operand 93 states and 191 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:50,979 INFO L93 Difference]: Finished difference Result 129 states and 259 transitions. [2022-02-11 00:06:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:50,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:50,981 INFO L225 Difference]: With dead ends: 129 [2022-02-11 00:06:50,981 INFO L226 Difference]: Without dead ends: 119 [2022-02-11 00:06:50,981 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:50,981 INFO L934 BasicCegarLoop]: 47 mSDtfsCounter, 60 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:50,982 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 183 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-02-11 00:06:50,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 93. [2022-02-11 00:06:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.0760869565217392) internal successors, (191), 92 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 191 transitions. [2022-02-11 00:06:50,985 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 191 transitions. Word has length 18 [2022-02-11 00:06:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:50,985 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 191 transitions. [2022-02-11 00:06:50,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 191 transitions. [2022-02-11 00:06:50,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:50,985 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:50,986 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:50,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-11 00:06:50,986 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:50,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:50,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1056444296, now seen corresponding path program 1 times [2022-02-11 00:06:50,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:50,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939482204] [2022-02-11 00:06:50,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:50,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:51,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:51,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939482204] [2022-02-11 00:06:51,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939482204] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:51,066 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:51,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:51,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912350822] [2022-02-11 00:06:51,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:51,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:51,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:51,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:51,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:51,068 INFO L87 Difference]: Start difference. First operand 93 states and 191 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:51,215 INFO L93 Difference]: Finished difference Result 147 states and 289 transitions. [2022-02-11 00:06:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:06:51,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:51,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:51,216 INFO L225 Difference]: With dead ends: 147 [2022-02-11 00:06:51,216 INFO L226 Difference]: Without dead ends: 114 [2022-02-11 00:06:51,217 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:06:51,217 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 77 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:51,217 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 216 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-11 00:06:51,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2022-02-11 00:06:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 87 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 181 transitions. [2022-02-11 00:06:51,220 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 181 transitions. Word has length 18 [2022-02-11 00:06:51,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:51,220 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 181 transitions. [2022-02-11 00:06:51,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,221 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 181 transitions. [2022-02-11 00:06:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:51,221 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:51,221 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:51,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-11 00:06:51,221 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:51,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1727790032, now seen corresponding path program 2 times [2022-02-11 00:06:51,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:51,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479764077] [2022-02-11 00:06:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:51,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:51,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:51,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479764077] [2022-02-11 00:06:51,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479764077] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:51,308 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:51,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:51,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851433549] [2022-02-11 00:06:51,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:51,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:51,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:51,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:51,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:51,310 INFO L87 Difference]: Start difference. First operand 88 states and 181 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:51,446 INFO L93 Difference]: Finished difference Result 175 states and 343 transitions. [2022-02-11 00:06:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:51,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:51,448 INFO L225 Difference]: With dead ends: 175 [2022-02-11 00:06:51,448 INFO L226 Difference]: Without dead ends: 147 [2022-02-11 00:06:51,448 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:51,449 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 93 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:51,449 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 203 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-02-11 00:06:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 110. [2022-02-11 00:06:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.073394495412844) internal successors, (226), 109 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 226 transitions. [2022-02-11 00:06:51,452 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 226 transitions. Word has length 18 [2022-02-11 00:06:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:51,452 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 226 transitions. [2022-02-11 00:06:51,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,453 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 226 transitions. [2022-02-11 00:06:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:51,453 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:51,453 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:51,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-11 00:06:51,453 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:51,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:51,454 INFO L85 PathProgramCache]: Analyzing trace with hash 563475137, now seen corresponding path program 2 times [2022-02-11 00:06:51,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:51,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794337948] [2022-02-11 00:06:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:51,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:51,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:51,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794337948] [2022-02-11 00:06:51,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794337948] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:51,521 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:51,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:51,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355581203] [2022-02-11 00:06:51,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:51,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:51,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:51,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:51,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:51,523 INFO L87 Difference]: Start difference. First operand 110 states and 226 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:51,611 INFO L93 Difference]: Finished difference Result 172 states and 336 transitions. [2022-02-11 00:06:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:51,612 INFO L225 Difference]: With dead ends: 172 [2022-02-11 00:06:51,612 INFO L226 Difference]: Without dead ends: 159 [2022-02-11 00:06:51,612 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:51,613 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 66 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:51,613 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 171 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:51,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-02-11 00:06:51,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 120. [2022-02-11 00:06:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.0840336134453783) internal successors, (248), 119 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 248 transitions. [2022-02-11 00:06:51,617 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 248 transitions. Word has length 18 [2022-02-11 00:06:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:51,617 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 248 transitions. [2022-02-11 00:06:51,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 248 transitions. [2022-02-11 00:06:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:51,618 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:51,618 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:51,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-11 00:06:51,618 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:51,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1456839135, now seen corresponding path program 3 times [2022-02-11 00:06:51,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:51,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015862343] [2022-02-11 00:06:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:51,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:51,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:51,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015862343] [2022-02-11 00:06:51,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015862343] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:51,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:51,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:51,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822953578] [2022-02-11 00:06:51,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:51,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:51,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:51,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:51,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:51,666 INFO L87 Difference]: Start difference. First operand 120 states and 248 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:51,758 INFO L93 Difference]: Finished difference Result 160 states and 319 transitions. [2022-02-11 00:06:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:51,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:51,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:51,759 INFO L225 Difference]: With dead ends: 160 [2022-02-11 00:06:51,759 INFO L226 Difference]: Without dead ends: 144 [2022-02-11 00:06:51,759 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:51,760 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 53 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:51,760 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 170 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-02-11 00:06:51,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2022-02-11 00:06:51,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.074766355140187) internal successors, (222), 107 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 222 transitions. [2022-02-11 00:06:51,764 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 222 transitions. Word has length 18 [2022-02-11 00:06:51,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:51,764 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 222 transitions. [2022-02-11 00:06:51,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,764 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 222 transitions. [2022-02-11 00:06:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:51,765 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:51,765 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:51,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-11 00:06:51,765 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:51,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1057523106, now seen corresponding path program 3 times [2022-02-11 00:06:51,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:51,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12048015] [2022-02-11 00:06:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:51,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:51,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12048015] [2022-02-11 00:06:51,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12048015] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:51,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:51,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:51,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358633587] [2022-02-11 00:06:51,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:51,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:51,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:51,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:51,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:51,840 INFO L87 Difference]: Start difference. First operand 108 states and 222 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:51,993 INFO L93 Difference]: Finished difference Result 166 states and 316 transitions. [2022-02-11 00:06:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:06:51,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:51,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:51,994 INFO L225 Difference]: With dead ends: 166 [2022-02-11 00:06:51,994 INFO L226 Difference]: Without dead ends: 153 [2022-02-11 00:06:51,995 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:06:51,995 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 87 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:51,995 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 204 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-02-11 00:06:51,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 111. [2022-02-11 00:06:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.0454545454545454) internal successors, (225), 110 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 225 transitions. [2022-02-11 00:06:51,999 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 225 transitions. Word has length 18 [2022-02-11 00:06:51,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:51,999 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 225 transitions. [2022-02-11 00:06:51,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 225 transitions. [2022-02-11 00:06:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:51,999 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:52,000 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:52,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-11 00:06:52,000 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:52,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1950887104, now seen corresponding path program 4 times [2022-02-11 00:06:52,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:52,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103018973] [2022-02-11 00:06:52,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:52,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:52,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103018973] [2022-02-11 00:06:52,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103018973] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:52,061 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:52,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:52,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372743184] [2022-02-11 00:06:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:52,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:52,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:52,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:52,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:52,063 INFO L87 Difference]: Start difference. First operand 111 states and 225 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:52,215 INFO L93 Difference]: Finished difference Result 157 states and 304 transitions. [2022-02-11 00:06:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:06:52,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:52,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:52,216 INFO L225 Difference]: With dead ends: 157 [2022-02-11 00:06:52,216 INFO L226 Difference]: Without dead ends: 120 [2022-02-11 00:06:52,216 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:06:52,217 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 68 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:52,217 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 206 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-02-11 00:06:52,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 90. [2022-02-11 00:06:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.0786516853932584) internal successors, (185), 89 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 185 transitions. [2022-02-11 00:06:52,220 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 185 transitions. Word has length 18 [2022-02-11 00:06:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:52,221 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 185 transitions. [2022-02-11 00:06:52,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 185 transitions. [2022-02-11 00:06:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:52,221 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:52,221 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:52,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-11 00:06:52,222 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:52,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash 460332854, now seen corresponding path program 5 times [2022-02-11 00:06:52,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:52,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555156863] [2022-02-11 00:06:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:52,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:52,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:52,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555156863] [2022-02-11 00:06:52,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555156863] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:52,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:52,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:52,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107073655] [2022-02-11 00:06:52,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:52,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:52,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:52,282 INFO L87 Difference]: Start difference. First operand 90 states and 185 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:52,408 INFO L93 Difference]: Finished difference Result 189 states and 381 transitions. [2022-02-11 00:06:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:52,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:52,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:52,410 INFO L225 Difference]: With dead ends: 189 [2022-02-11 00:06:52,410 INFO L226 Difference]: Without dead ends: 161 [2022-02-11 00:06:52,410 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:52,411 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 91 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:52,411 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 201 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:52,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-02-11 00:06:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 122. [2022-02-11 00:06:52,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.15702479338843) internal successors, (261), 121 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 261 transitions. [2022-02-11 00:06:52,415 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 261 transitions. Word has length 18 [2022-02-11 00:06:52,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:52,415 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 261 transitions. [2022-02-11 00:06:52,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,415 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 261 transitions. [2022-02-11 00:06:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:52,416 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:52,416 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:52,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-11 00:06:52,416 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:52,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:52,417 INFO L85 PathProgramCache]: Analyzing trace with hash -209934072, now seen corresponding path program 6 times [2022-02-11 00:06:52,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:52,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661569408] [2022-02-11 00:06:52,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:52,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:52,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661569408] [2022-02-11 00:06:52,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661569408] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:52,489 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:52,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:52,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250920704] [2022-02-11 00:06:52,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:52,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:52,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:52,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:52,491 INFO L87 Difference]: Start difference. First operand 122 states and 261 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:52,623 INFO L93 Difference]: Finished difference Result 195 states and 376 transitions. [2022-02-11 00:06:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:52,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:52,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:52,625 INFO L225 Difference]: With dead ends: 195 [2022-02-11 00:06:52,625 INFO L226 Difference]: Without dead ends: 182 [2022-02-11 00:06:52,625 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:52,626 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 99 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:52,626 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 199 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:52,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-02-11 00:06:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 131. [2022-02-11 00:06:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 2.1384615384615384) internal successors, (278), 130 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 278 transitions. [2022-02-11 00:06:52,630 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 278 transitions. Word has length 18 [2022-02-11 00:06:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:52,630 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 278 transitions. [2022-02-11 00:06:52,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 278 transitions. [2022-02-11 00:06:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:52,631 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:52,631 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:52,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-11 00:06:52,631 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:52,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash 683429926, now seen corresponding path program 7 times [2022-02-11 00:06:52,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:52,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159161986] [2022-02-11 00:06:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:52,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:52,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:52,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159161986] [2022-02-11 00:06:52,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159161986] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:52,699 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:52,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:52,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103219669] [2022-02-11 00:06:52,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:52,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:52,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:52,701 INFO L87 Difference]: Start difference. First operand 131 states and 278 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:52,832 INFO L93 Difference]: Finished difference Result 180 states and 354 transitions. [2022-02-11 00:06:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:52,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:52,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:52,833 INFO L225 Difference]: With dead ends: 180 [2022-02-11 00:06:52,833 INFO L226 Difference]: Without dead ends: 149 [2022-02-11 00:06:52,834 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:52,834 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 79 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:52,834 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 194 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:52,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-02-11 00:06:52,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 116. [2022-02-11 00:06:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.0956521739130434) internal successors, (241), 115 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 241 transitions. [2022-02-11 00:06:52,838 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 241 transitions. Word has length 18 [2022-02-11 00:06:52,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:52,838 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 241 transitions. [2022-02-11 00:06:52,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,838 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 241 transitions. [2022-02-11 00:06:52,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:52,839 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:52,839 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:52,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-11 00:06:52,839 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:52,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:52,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1370649209, now seen corresponding path program 4 times [2022-02-11 00:06:52,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:52,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117788874] [2022-02-11 00:06:52,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:52,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:52,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:52,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117788874] [2022-02-11 00:06:52,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117788874] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:52,908 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:52,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:52,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62242729] [2022-02-11 00:06:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:52,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:52,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:52,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:52,909 INFO L87 Difference]: Start difference. First operand 116 states and 241 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:53,004 INFO L93 Difference]: Finished difference Result 182 states and 359 transitions. [2022-02-11 00:06:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:53,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:53,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:53,006 INFO L225 Difference]: With dead ends: 182 [2022-02-11 00:06:53,006 INFO L226 Difference]: Without dead ends: 161 [2022-02-11 00:06:53,006 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:53,007 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 60 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:53,007 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 168 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:53,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-02-11 00:06:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 124. [2022-02-11 00:06:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.105691056910569) internal successors, (259), 123 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 259 transitions. [2022-02-11 00:06:53,010 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 259 transitions. Word has length 18 [2022-02-11 00:06:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:53,010 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 259 transitions. [2022-02-11 00:06:53,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 259 transitions. [2022-02-11 00:06:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:53,011 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:53,011 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:53,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-11 00:06:53,011 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:53,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:53,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1695120219, now seen corresponding path program 5 times [2022-02-11 00:06:53,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:53,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745776350] [2022-02-11 00:06:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:53,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:53,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:53,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745776350] [2022-02-11 00:06:53,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745776350] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:53,073 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:53,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:53,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980717922] [2022-02-11 00:06:53,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:53,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:53,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:53,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:53,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:53,074 INFO L87 Difference]: Start difference. First operand 124 states and 259 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:53,166 INFO L93 Difference]: Finished difference Result 182 states and 358 transitions. [2022-02-11 00:06:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:53,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:53,168 INFO L225 Difference]: With dead ends: 182 [2022-02-11 00:06:53,168 INFO L226 Difference]: Without dead ends: 173 [2022-02-11 00:06:53,168 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:53,169 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 61 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:53,169 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 161 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-02-11 00:06:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 126. [2022-02-11 00:06:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.104) internal successors, (263), 125 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 263 transitions. [2022-02-11 00:06:53,173 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 263 transitions. Word has length 18 [2022-02-11 00:06:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:53,173 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 263 transitions. [2022-02-11 00:06:53,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 263 transitions. [2022-02-11 00:06:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:53,174 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:53,174 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:53,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-11 00:06:53,174 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1706483079, now seen corresponding path program 6 times [2022-02-11 00:06:53,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:53,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284895110] [2022-02-11 00:06:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:53,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:53,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:53,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284895110] [2022-02-11 00:06:53,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284895110] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:53,222 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:53,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:53,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768023182] [2022-02-11 00:06:53,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:53,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:53,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:53,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:53,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:53,223 INFO L87 Difference]: Start difference. First operand 126 states and 263 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:53,311 INFO L93 Difference]: Finished difference Result 171 states and 344 transitions. [2022-02-11 00:06:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:53,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:53,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:53,312 INFO L225 Difference]: With dead ends: 171 [2022-02-11 00:06:53,312 INFO L226 Difference]: Without dead ends: 148 [2022-02-11 00:06:53,312 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:53,313 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 49 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:53,313 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 161 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-02-11 00:06:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 102. [2022-02-11 00:06:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.0495049504950495) internal successors, (207), 101 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 207 transitions. [2022-02-11 00:06:53,316 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 207 transitions. Word has length 18 [2022-02-11 00:06:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:53,317 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 207 transitions. [2022-02-11 00:06:53,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 207 transitions. [2022-02-11 00:06:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:53,317 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:53,317 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:53,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-11 00:06:53,317 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:53,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash -493732936, now seen corresponding path program 8 times [2022-02-11 00:06:53,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:53,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196755875] [2022-02-11 00:06:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:53,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:53,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:53,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196755875] [2022-02-11 00:06:53,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196755875] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:53,380 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:53,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:53,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337993280] [2022-02-11 00:06:53,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:53,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:53,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:53,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:53,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:53,382 INFO L87 Difference]: Start difference. First operand 102 states and 207 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:53,519 INFO L93 Difference]: Finished difference Result 166 states and 313 transitions. [2022-02-11 00:06:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:06:53,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:53,528 INFO L225 Difference]: With dead ends: 166 [2022-02-11 00:06:53,528 INFO L226 Difference]: Without dead ends: 145 [2022-02-11 00:06:53,529 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:06:53,529 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 87 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:53,530 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 212 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:53,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-02-11 00:06:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 106. [2022-02-11 00:06:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.019047619047619) internal successors, (212), 105 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 212 transitions. [2022-02-11 00:06:53,533 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 212 transitions. Word has length 18 [2022-02-11 00:06:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:53,533 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 212 transitions. [2022-02-11 00:06:53,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 212 transitions. [2022-02-11 00:06:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:53,534 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:53,534 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:53,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-11 00:06:53,534 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:53,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash -169261926, now seen corresponding path program 9 times [2022-02-11 00:06:53,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:53,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766564568] [2022-02-11 00:06:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:53,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:53,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766564568] [2022-02-11 00:06:53,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766564568] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:53,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:53,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:53,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908474179] [2022-02-11 00:06:53,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:53,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:53,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:53,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:53,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:53,610 INFO L87 Difference]: Start difference. First operand 106 states and 212 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:53,780 INFO L93 Difference]: Finished difference Result 166 states and 310 transitions. [2022-02-11 00:06:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:06:53,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:53,781 INFO L225 Difference]: With dead ends: 166 [2022-02-11 00:06:53,781 INFO L226 Difference]: Without dead ends: 157 [2022-02-11 00:06:53,782 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:06:53,783 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 84 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:53,783 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 211 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:53,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-02-11 00:06:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 107. [2022-02-11 00:06:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.009433962264151) internal successors, (213), 106 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 213 transitions. [2022-02-11 00:06:53,786 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 213 transitions. Word has length 18 [2022-02-11 00:06:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:53,787 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 213 transitions. [2022-02-11 00:06:53,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 213 transitions. [2022-02-11 00:06:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:53,787 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:53,787 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:53,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-11 00:06:53,788 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:53,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:53,788 INFO L85 PathProgramCache]: Analyzing trace with hash 724102072, now seen corresponding path program 10 times [2022-02-11 00:06:53,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:53,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894414082] [2022-02-11 00:06:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:53,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:53,875 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:53,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894414082] [2022-02-11 00:06:53,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894414082] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:53,876 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:53,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:53,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181969278] [2022-02-11 00:06:53,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:53,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:53,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:53,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:53,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:53,877 INFO L87 Difference]: Start difference. First operand 107 states and 213 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:54,044 INFO L93 Difference]: Finished difference Result 155 states and 296 transitions. [2022-02-11 00:06:54,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:06:54,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:54,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:54,045 INFO L225 Difference]: With dead ends: 155 [2022-02-11 00:06:54,045 INFO L226 Difference]: Without dead ends: 106 [2022-02-11 00:06:54,045 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:06:54,045 INFO L934 BasicCegarLoop]: 47 mSDtfsCounter, 68 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:54,045 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 211 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-11 00:06:54,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2022-02-11 00:06:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.064935064935065) internal successors, (159), 77 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 159 transitions. [2022-02-11 00:06:54,048 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 159 transitions. Word has length 18 [2022-02-11 00:06:54,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:54,048 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 159 transitions. [2022-02-11 00:06:54,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,048 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 159 transitions. [2022-02-11 00:06:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:54,048 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:54,048 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:54,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-11 00:06:54,049 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:54,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash 283747854, now seen corresponding path program 11 times [2022-02-11 00:06:54,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:54,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051614999] [2022-02-11 00:06:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:54,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:54,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:54,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051614999] [2022-02-11 00:06:54,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051614999] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:54,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:54,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:54,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282458561] [2022-02-11 00:06:54,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:54,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:54,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:54,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:54,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:54,115 INFO L87 Difference]: Start difference. First operand 78 states and 159 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:54,226 INFO L93 Difference]: Finished difference Result 110 states and 216 transitions. [2022-02-11 00:06:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:54,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:54,227 INFO L225 Difference]: With dead ends: 110 [2022-02-11 00:06:54,227 INFO L226 Difference]: Without dead ends: 82 [2022-02-11 00:06:54,227 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:54,228 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 75 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:54,228 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 152 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-02-11 00:06:54,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2022-02-11 00:06:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.9846153846153847) internal successors, (129), 65 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 129 transitions. [2022-02-11 00:06:54,230 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 129 transitions. Word has length 18 [2022-02-11 00:06:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:54,230 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 129 transitions. [2022-02-11 00:06:54,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 129 transitions. [2022-02-11 00:06:54,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:54,231 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:54,231 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:54,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-11 00:06:54,231 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:54,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:54,231 INFO L85 PathProgramCache]: Analyzing trace with hash -386519072, now seen corresponding path program 12 times [2022-02-11 00:06:54,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:54,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853742978] [2022-02-11 00:06:54,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:54,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:54,289 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:54,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853742978] [2022-02-11 00:06:54,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853742978] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:54,289 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:54,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:54,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983144078] [2022-02-11 00:06:54,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:54,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:54,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:54,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:54,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:54,290 INFO L87 Difference]: Start difference. First operand 66 states and 129 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:54,414 INFO L93 Difference]: Finished difference Result 116 states and 211 transitions. [2022-02-11 00:06:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:54,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:54,415 INFO L225 Difference]: With dead ends: 116 [2022-02-11 00:06:54,415 INFO L226 Difference]: Without dead ends: 103 [2022-02-11 00:06:54,415 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:54,415 INFO L934 BasicCegarLoop]: 35 mSDtfsCounter, 86 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:54,416 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 145 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:06:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-11 00:06:54,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 79. [2022-02-11 00:06:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.0) internal successors, (156), 78 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 156 transitions. [2022-02-11 00:06:54,418 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 156 transitions. Word has length 18 [2022-02-11 00:06:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:54,418 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 156 transitions. [2022-02-11 00:06:54,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 156 transitions. [2022-02-11 00:06:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:54,419 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:54,419 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:54,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-11 00:06:54,419 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:54,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:54,419 INFO L85 PathProgramCache]: Analyzing trace with hash 506844926, now seen corresponding path program 13 times [2022-02-11 00:06:54,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:54,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888619808] [2022-02-11 00:06:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:54,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:54,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:54,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888619808] [2022-02-11 00:06:54,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888619808] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:54,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:54,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:54,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494090860] [2022-02-11 00:06:54,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:54,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:54,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:54,496 INFO L87 Difference]: Start difference. First operand 79 states and 156 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:54,607 INFO L93 Difference]: Finished difference Result 101 states and 189 transitions. [2022-02-11 00:06:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:54,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:54,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:54,608 INFO L225 Difference]: With dead ends: 101 [2022-02-11 00:06:54,608 INFO L226 Difference]: Without dead ends: 70 [2022-02-11 00:06:54,608 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:54,609 INFO L934 BasicCegarLoop]: 36 mSDtfsCounter, 66 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:54,609 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 141 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-11 00:06:54,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2022-02-11 00:06:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 63 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 119 transitions. [2022-02-11 00:06:54,611 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 119 transitions. Word has length 18 [2022-02-11 00:06:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:54,611 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 119 transitions. [2022-02-11 00:06:54,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 119 transitions. [2022-02-11 00:06:54,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:54,611 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:54,612 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:54,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-11 00:06:54,612 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:54,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:54,612 INFO L85 PathProgramCache]: Analyzing trace with hash -670317936, now seen corresponding path program 14 times [2022-02-11 00:06:54,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:54,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784684988] [2022-02-11 00:06:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:54,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:54,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:54,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784684988] [2022-02-11 00:06:54,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784684988] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:54,675 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:54,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:54,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427494940] [2022-02-11 00:06:54,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:54,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:54,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:54,676 INFO L87 Difference]: Start difference. First operand 64 states and 119 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:54,797 INFO L93 Difference]: Finished difference Result 112 states and 193 transitions. [2022-02-11 00:06:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:54,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:54,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:54,798 INFO L225 Difference]: With dead ends: 112 [2022-02-11 00:06:54,798 INFO L226 Difference]: Without dead ends: 91 [2022-02-11 00:06:54,798 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:54,798 INFO L934 BasicCegarLoop]: 37 mSDtfsCounter, 82 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:54,799 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 149 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:54,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-11 00:06:54,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 68. [2022-02-11 00:06:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.8507462686567164) internal successors, (124), 67 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 124 transitions. [2022-02-11 00:06:54,801 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 124 transitions. Word has length 18 [2022-02-11 00:06:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:54,801 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 124 transitions. [2022-02-11 00:06:54,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 124 transitions. [2022-02-11 00:06:54,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:54,801 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:54,801 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:54,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-11 00:06:54,802 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:54,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -345846926, now seen corresponding path program 15 times [2022-02-11 00:06:54,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:54,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328921733] [2022-02-11 00:06:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:54,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:54,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328921733] [2022-02-11 00:06:54,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328921733] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:54,872 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:54,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:54,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6125205] [2022-02-11 00:06:54,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:54,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:54,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:54,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:54,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:54,873 INFO L87 Difference]: Start difference. First operand 68 states and 124 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:54,984 INFO L93 Difference]: Finished difference Result 100 states and 168 transitions. [2022-02-11 00:06:54,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:54,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:54,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:54,985 INFO L225 Difference]: With dead ends: 100 [2022-02-11 00:06:54,985 INFO L226 Difference]: Without dead ends: 91 [2022-02-11 00:06:54,985 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:54,986 INFO L934 BasicCegarLoop]: 33 mSDtfsCounter, 78 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:54,986 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 135 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-11 00:06:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 69. [2022-02-11 00:06:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.838235294117647) internal successors, (125), 68 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 125 transitions. [2022-02-11 00:06:54,989 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 125 transitions. Word has length 18 [2022-02-11 00:06:54,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:54,989 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 125 transitions. [2022-02-11 00:06:54,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 125 transitions. [2022-02-11 00:06:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:54,989 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:54,989 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:54,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-11 00:06:54,990 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:54,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash 547517072, now seen corresponding path program 16 times [2022-02-11 00:06:54,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:54,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999243724] [2022-02-11 00:06:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:54,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:55,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:55,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999243724] [2022-02-11 00:06:55,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999243724] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:55,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:55,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:55,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502805384] [2022-02-11 00:06:55,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:55,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:55,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:55,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:55,054 INFO L87 Difference]: Start difference. First operand 69 states and 125 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:55,165 INFO L93 Difference]: Finished difference Result 89 states and 154 transitions. [2022-02-11 00:06:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:55,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:55,166 INFO L225 Difference]: With dead ends: 89 [2022-02-11 00:06:55,166 INFO L226 Difference]: Without dead ends: 48 [2022-02-11 00:06:55,166 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:55,166 INFO L934 BasicCegarLoop]: 33 mSDtfsCounter, 61 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:55,167 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 132 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-02-11 00:06:55,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-02-11 00:06:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 75 transitions. [2022-02-11 00:06:55,169 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 75 transitions. Word has length 18 [2022-02-11 00:06:55,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:55,169 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 75 transitions. [2022-02-11 00:06:55,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 75 transitions. [2022-02-11 00:06:55,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:55,169 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:55,169 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:55,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-11 00:06:55,169 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:55,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1683572155, now seen corresponding path program 7 times [2022-02-11 00:06:55,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:55,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2240369] [2022-02-11 00:06:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:55,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:55,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:55,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2240369] [2022-02-11 00:06:55,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2240369] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:55,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:55,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:55,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241177203] [2022-02-11 00:06:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:55,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:55,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:55,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:55,238 INFO L87 Difference]: Start difference. First operand 46 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:55,333 INFO L93 Difference]: Finished difference Result 102 states and 161 transitions. [2022-02-11 00:06:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:55,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:55,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:55,334 INFO L225 Difference]: With dead ends: 102 [2022-02-11 00:06:55,334 INFO L226 Difference]: Without dead ends: 79 [2022-02-11 00:06:55,334 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:06:55,335 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 54 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:55,335 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 134 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-11 00:06:55,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 47. [2022-02-11 00:06:55,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 76 transitions. [2022-02-11 00:06:55,337 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 76 transitions. Word has length 18 [2022-02-11 00:06:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:55,337 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 76 transitions. [2022-02-11 00:06:55,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 76 transitions. [2022-02-11 00:06:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:55,337 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:55,337 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:55,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-11 00:06:55,338 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:55,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:55,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1859620965, now seen corresponding path program 8 times [2022-02-11 00:06:55,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:55,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040931531] [2022-02-11 00:06:55,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:55,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:55,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:55,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040931531] [2022-02-11 00:06:55,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040931531] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:55,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:55,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:55,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527938897] [2022-02-11 00:06:55,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:55,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:55,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:55,389 INFO L87 Difference]: Start difference. First operand 47 states and 76 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:55,471 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2022-02-11 00:06:55,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:55,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:55,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:55,472 INFO L225 Difference]: With dead ends: 88 [2022-02-11 00:06:55,472 INFO L226 Difference]: Without dead ends: 67 [2022-02-11 00:06:55,472 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:55,472 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 51 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:55,472 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 124 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-11 00:06:55,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 51. [2022-02-11 00:06:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.62) internal successors, (81), 50 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 81 transitions. [2022-02-11 00:06:55,474 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 81 transitions. Word has length 18 [2022-02-11 00:06:55,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:55,474 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 81 transitions. [2022-02-11 00:06:55,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 81 transitions. [2022-02-11 00:06:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:55,475 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:55,475 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:55,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-11 00:06:55,475 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:55,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1478454663, now seen corresponding path program 9 times [2022-02-11 00:06:55,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:55,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177612290] [2022-02-11 00:06:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:55,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:55,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:55,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177612290] [2022-02-11 00:06:55,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177612290] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:55,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:55,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:55,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19635075] [2022-02-11 00:06:55,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:55,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:55,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:55,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:55,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:55,531 INFO L87 Difference]: Start difference. First operand 51 states and 81 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:55,611 INFO L93 Difference]: Finished difference Result 78 states and 116 transitions. [2022-02-11 00:06:55,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:55,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:55,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:55,612 INFO L225 Difference]: With dead ends: 78 [2022-02-11 00:06:55,612 INFO L226 Difference]: Without dead ends: 69 [2022-02-11 00:06:55,612 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:55,612 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 50 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:55,612 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 110 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-11 00:06:55,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2022-02-11 00:06:55,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.607843137254902) internal successors, (82), 51 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 82 transitions. [2022-02-11 00:06:55,614 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 82 transitions. Word has length 18 [2022-02-11 00:06:55,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:55,614 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 82 transitions. [2022-02-11 00:06:55,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,614 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 82 transitions. [2022-02-11 00:06:55,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:55,615 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:55,615 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:55,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-11 00:06:55,615 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:55,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:55,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1923148635, now seen corresponding path program 10 times [2022-02-11 00:06:55,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:55,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435219459] [2022-02-11 00:06:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:55,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:55,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:55,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435219459] [2022-02-11 00:06:55,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435219459] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:55,668 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:55,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-11 00:06:55,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521476130] [2022-02-11 00:06:55,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:55,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:06:55,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:55,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:06:55,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:06:55,669 INFO L87 Difference]: Start difference. First operand 52 states and 82 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:55,747 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2022-02-11 00:06:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:06:55,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:55,748 INFO L225 Difference]: With dead ends: 67 [2022-02-11 00:06:55,748 INFO L226 Difference]: Without dead ends: 39 [2022-02-11 00:06:55,748 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:06:55,749 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 37 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:55,749 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 108 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-11 00:06:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2022-02-11 00:06:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 56 transitions. [2022-02-11 00:06:55,750 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 56 transitions. Word has length 18 [2022-02-11 00:06:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:55,750 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 56 transitions. [2022-02-11 00:06:55,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 56 transitions. [2022-02-11 00:06:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:55,751 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:55,751 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:55,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-11 00:06:55,751 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:55,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash -974981978, now seen corresponding path program 17 times [2022-02-11 00:06:55,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:55,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645930460] [2022-02-11 00:06:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:55,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:55,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:55,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645930460] [2022-02-11 00:06:55,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645930460] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:55,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:55,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:55,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522258669] [2022-02-11 00:06:55,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:55,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:55,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:55,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:55,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:55,837 INFO L87 Difference]: Start difference. First operand 37 states and 56 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:55,952 INFO L93 Difference]: Finished difference Result 64 states and 95 transitions. [2022-02-11 00:06:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:06:55,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:55,953 INFO L225 Difference]: With dead ends: 64 [2022-02-11 00:06:55,953 INFO L226 Difference]: Without dead ends: 41 [2022-02-11 00:06:55,953 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:06:55,954 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:55,954 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 106 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:55,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-11 00:06:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2022-02-11 00:06:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2022-02-11 00:06:55,957 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 52 transitions. Word has length 18 [2022-02-11 00:06:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:55,957 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 52 transitions. [2022-02-11 00:06:55,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2022-02-11 00:06:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:55,958 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:55,958 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:55,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-11 00:06:55,958 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:55,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1726756154, now seen corresponding path program 18 times [2022-02-11 00:06:55,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:55,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126445081] [2022-02-11 00:06:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:55,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:56,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:56,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126445081] [2022-02-11 00:06:56,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126445081] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:56,023 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:56,023 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:56,023 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241740581] [2022-02-11 00:06:56,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:56,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:56,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:56,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:56,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:56,024 INFO L87 Difference]: Start difference. First operand 35 states and 52 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:56,111 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2022-02-11 00:06:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:56,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:56,112 INFO L225 Difference]: With dead ends: 50 [2022-02-11 00:06:56,112 INFO L226 Difference]: Without dead ends: 29 [2022-02-11 00:06:56,112 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:56,113 INFO L934 BasicCegarLoop]: 23 mSDtfsCounter, 68 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:56,113 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 81 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-11 00:06:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-02-11 00:06:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-02-11 00:06:56,114 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 18 [2022-02-11 00:06:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:56,114 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-02-11 00:06:56,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-02-11 00:06:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:56,115 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:56,115 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:56,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-11 00:06:56,115 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:56,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:56,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2107922456, now seen corresponding path program 19 times [2022-02-11 00:06:56,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:56,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839159353] [2022-02-11 00:06:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:56,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:56,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:56,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839159353] [2022-02-11 00:06:56,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839159353] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:56,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:56,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:56,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679422375] [2022-02-11 00:06:56,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:56,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:56,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:56,176 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:56,274 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-02-11 00:06:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:56,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:56,275 INFO L225 Difference]: With dead ends: 38 [2022-02-11 00:06:56,275 INFO L226 Difference]: Without dead ends: 29 [2022-02-11 00:06:56,276 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:56,276 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 66 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:56,276 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 63 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-11 00:06:56,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2022-02-11 00:06:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-02-11 00:06:56,277 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2022-02-11 00:06:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:56,277 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-02-11 00:06:56,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-02-11 00:06:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:06:56,278 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:56,278 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:56,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-11 00:06:56,278 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1214558458, now seen corresponding path program 20 times [2022-02-11 00:06:56,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:56,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578453981] [2022-02-11 00:06:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:56,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:56,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:56,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578453981] [2022-02-11 00:06:56,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578453981] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:06:56,343 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:06:56,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-11 00:06:56,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753440182] [2022-02-11 00:06:56,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:06:56,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:06:56,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:56,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:06:56,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:06:56,344 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:56,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:56,433 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-02-11 00:06:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:06:56,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:06:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:56,434 INFO L225 Difference]: With dead ends: 27 [2022-02-11 00:06:56,434 INFO L226 Difference]: Without dead ends: 0 [2022-02-11 00:06:56,434 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:06:56,434 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:56,435 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 57 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:06:56,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-11 00:06:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-11 00:06:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:56,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-11 00:06:56,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-02-11 00:06:56,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:56,436 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-11 00:06:56,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-11 00:06:56,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-11 00:06:56,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-11 00:06:56,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-11 00:06:56,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-11 00:06:56,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-11 00:06:56,442 INFO L733 BasicCegarLoop]: Path program histogram: [20, 10, 10, 6, 1, 1] [2022-02-11 00:06:56,443 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-11 00:06:56,443 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-11 00:06:56,445 INFO L202 PluginConnector]: Adding new model security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 12:06:56 BasicIcfg [2022-02-11 00:06:56,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-11 00:06:56,446 INFO L158 Benchmark]: Toolchain (without parser) took 9785.85ms. Allocated memory was 199.2MB in the beginning and 300.9MB in the end (delta: 101.7MB). Free memory was 157.5MB in the beginning and 219.3MB in the end (delta: -61.8MB). Peak memory consumption was 40.8MB. Max. memory is 8.0GB. [2022-02-11 00:06:56,446 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 199.2MB. Free memory is still 158.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 00:06:56,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.80ms. Allocated memory is still 199.2MB. Free memory was 157.4MB in the beginning and 155.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-11 00:06:56,446 INFO L158 Benchmark]: Boogie Preprocessor took 16.69ms. Allocated memory is still 199.2MB. Free memory was 155.8MB in the beginning and 155.0MB in the end (delta: 861.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 00:06:56,446 INFO L158 Benchmark]: RCFGBuilder took 237.96ms. Allocated memory is still 199.2MB. Free memory was 155.0MB in the beginning and 146.6MB in the end (delta: 8.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-11 00:06:56,446 INFO L158 Benchmark]: TraceAbstraction took 9500.32ms. Allocated memory was 199.2MB in the beginning and 300.9MB in the end (delta: 101.7MB). Free memory was 146.1MB in the beginning and 219.3MB in the end (delta: -73.2MB). Peak memory consumption was 29.3MB. Max. memory is 8.0GB. [2022-02-11 00:06:56,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13ms. Allocated memory is still 199.2MB. Free memory is still 158.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.80ms. Allocated memory is still 199.2MB. Free memory was 157.4MB in the beginning and 155.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.69ms. Allocated memory is still 199.2MB. Free memory was 155.8MB in the beginning and 155.0MB in the end (delta: 861.9kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 237.96ms. Allocated memory is still 199.2MB. Free memory was 155.0MB in the beginning and 146.6MB in the end (delta: 8.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 9500.32ms. Allocated memory was 199.2MB in the beginning and 300.9MB in the end (delta: 101.7MB). Free memory was 146.1MB in the beginning and 219.3MB in the end (delta: -73.2MB). Peak memory consumption was 29.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 43 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9.4s, OverallIterations: 48, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.1s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2999 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2999 mSDsluCounter, 7424 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6783 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3727 IncrementalHoareTripleChecker+Invalid, 3819 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 1841 mSDtfsCounter, 3727 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 562 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 461 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=27, InterpolantAutomatonStates: 359, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 48 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 47 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 861 NumberOfCodeBlocks, 861 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 813 ConstructedInterpolants, 0 QuantifiedInterpolants, 5483 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-11 00:06:56,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...