/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/mult-flipped-dist.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 18:41:43,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 18:41:43,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 18:41:43,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-03 18:41:43,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-03 18:41:43,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-03 18:41:43,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-03 18:41:43,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-03 18:41:43,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-03 18:41:43,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-03 18:41:43,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-03 18:41:43,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-03 18:41:43,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-03 18:41:43,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-03 18:41:43,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-03 18:41:43,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-03 18:41:43,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-03 18:41:43,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-03 18:41:43,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-03 18:41:43,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-03 18:41:43,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-03 18:41:43,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-03 18:41:43,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-03 18:41:43,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-03 18:41:43,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-03 18:41:43,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-03 18:41:43,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-03 18:41:43,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-03 18:41:43,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-03 18:41:43,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-03 18:41:43,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-03 18:41:43,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-03 18:41:43,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-03 18:41:43,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-03 18:41:43,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-03 18:41:43,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-03 18:41:43,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-03 18:41:43,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-03 18:41:43,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 18:41:43,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 18:41:43,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 18:41:43,702 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 [2022-03-03 18:41:43,727 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 18:41:43,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 18:41:43,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 18:41:43,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 18:41:43,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 18:41:43,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 18:41:43,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 18:41:43,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 18:41:43,729 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 18:41:43,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 18:41:43,729 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 18:41:43,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 18:41:43,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 18:41:43,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 18:41:43,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 18:41:43,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 18:41:43,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 18:41:43,730 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 18:41:43,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 18:41:43,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 18:41:43,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 18:41:43,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 18:41:43,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 18:41:43,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 18:41:43,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 18:41:43,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 18:41:43,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 18:41:43,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 18:41:43,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 18:41:43,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 18:41:43,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 18:41:43,731 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 18:41:43,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 18:41:43,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 18:41:43,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 18:41:43,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 18:41:43,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 18:41:43,912 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 18:41:43,913 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 18:41:43,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-flipped-dist.wvr.bpl [2022-03-03 18:41:43,914 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-flipped-dist.wvr.bpl' [2022-03-03 18:41:43,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 18:41:43,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 18:41:43,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 18:41:43,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 18:41:43,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 18:41:43,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/1) ... [2022-03-03 18:41:43,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/1) ... [2022-03-03 18:41:43,961 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 18:41:43,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 18:41:43,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 18:41:43,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 18:41:43,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 18:41:43,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/1) ... [2022-03-03 18:41:43,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/1) ... [2022-03-03 18:41:43,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/1) ... [2022-03-03 18:41:43,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/1) ... [2022-03-03 18:41:43,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/1) ... [2022-03-03 18:41:43,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/1) ... [2022-03-03 18:41:43,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/1) ... [2022-03-03 18:41:43,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 18:41:43,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 18:41:43,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 18:41:43,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 18:41:43,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/1) ... [2022-03-03 18:41:43,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 18:41:43,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:44,000 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) [2022-03-03 18:41:44,017 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 [2022-03-03 18:41:44,025 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-03 18:41:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 18:41:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 18:41:44,025 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-03 18:41:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 18:41:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 18:41:44,026 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 18:41:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 18:41:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 18:41:44,026 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-03 18:41:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-03 18:41:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-03 18:41:44,027 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 18:41:44,061 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 18:41:44,062 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 18:41:44,144 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 18:41:44,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 18:41:44,154 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-03 18:41:44,156 INFO L202 PluginConnector]: Adding new model mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 06:41:44 BoogieIcfgContainer [2022-03-03 18:41:44,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 18:41:44,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 18:41:44,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 18:41:44,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 18:41:44,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:43" (1/2) ... [2022-03-03 18:41:44,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298ec060 and model type mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:41:44, skipping insertion in model container [2022-03-03 18:41:44,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 06:41:44" (2/2) ... [2022-03-03 18:41:44,162 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.bpl [2022-03-03 18:41:44,165 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 18:41:44,166 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 18:41:44,166 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 18:41:44,166 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 18:41:44,192 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-03 18:41:44,222 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 18:41:44,227 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 18:41:44,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-03 18:41:44,234 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 76 flow [2022-03-03 18:41:44,266 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 109 states, 108 states have (on average 2.861111111111111) internal successors, (309), 108 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 108 states have (on average 2.861111111111111) internal successors, (309), 108 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:44,283 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:44,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:44,284 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1698271758, now seen corresponding path program 1 times [2022-03-03 18:41:44,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:44,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036814641] [2022-03-03 18:41:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:44,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:44,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:44,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036814641] [2022-03-03 18:41:44,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036814641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:41:44,478 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:41:44,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 18:41:44,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710529019] [2022-03-03 18:41:44,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:41:44,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 18:41:44,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:44,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 18:41:44,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 18:41:44,504 INFO L87 Difference]: Start difference. First operand has 109 states, 108 states have (on average 2.861111111111111) internal successors, (309), 108 states have internal predecessors, (309), 0 states have call successors, (0), 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 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:44,543 INFO L93 Difference]: Finished difference Result 214 states and 614 transitions. [2022-03-03 18:41:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 18:41:44,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-03 18:41:44,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:44,554 INFO L225 Difference]: With dead ends: 214 [2022-03-03 18:41:44,554 INFO L226 Difference]: Without dead ends: 199 [2022-03-03 18:41:44,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 18:41:44,558 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:44,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-03-03 18:41:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 146. [2022-03-03 18:41:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.8689655172413793) internal successors, (416), 145 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 416 transitions. [2022-03-03 18:41:44,603 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 416 transitions. Word has length 15 [2022-03-03 18:41:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:44,615 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 416 transitions. [2022-03-03 18:41:44,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 416 transitions. [2022-03-03 18:41:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:44,617 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:44,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:44,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 18:41:44,618 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:44,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1717700848, now seen corresponding path program 1 times [2022-03-03 18:41:44,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:44,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130530133] [2022-03-03 18:41:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:44,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:44,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:44,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130530133] [2022-03-03 18:41:44,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130530133] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:44,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986314865] [2022-03-03 18:41:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:44,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:44,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:44,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:44,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 18:41:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:44,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-03 18:41:44,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:44,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:44,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986314865] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:44,873 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:44,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-03-03 18:41:44,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192756843] [2022-03-03 18:41:44,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:44,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 18:41:44,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:44,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 18:41:44,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 18:41:44,875 INFO L87 Difference]: Start difference. First operand 146 states and 416 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:44,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:44,996 INFO L93 Difference]: Finished difference Result 344 states and 959 transitions. [2022-03-03 18:41:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 18:41:44,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have 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 [2022-03-03 18:41:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:45,001 INFO L225 Difference]: With dead ends: 344 [2022-03-03 18:41:45,001 INFO L226 Difference]: Without dead ends: 344 [2022-03-03 18:41:45,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:41:45,002 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 44 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 [2022-03-03 18:41:45,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-03-03 18:41:45,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 172. [2022-03-03 18:41:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.953216374269006) internal successors, (505), 171 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 505 transitions. [2022-03-03 18:41:45,027 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 505 transitions. Word has length 17 [2022-03-03 18:41:45,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:45,027 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 505 transitions. [2022-03-03 18:41:45,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:45,027 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 505 transitions. [2022-03-03 18:41:45,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:45,028 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:45,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:45,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:45,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:45,230 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:45,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:45,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1520327342, now seen corresponding path program 1 times [2022-03-03 18:41:45,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:45,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909305667] [2022-03-03 18:41:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:45,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:45,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:45,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909305667] [2022-03-03 18:41:45,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909305667] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:41:45,274 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:41:45,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 18:41:45,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344885615] [2022-03-03 18:41:45,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:41:45,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 18:41:45,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 18:41:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:41:45,275 INFO L87 Difference]: Start difference. First operand 172 states and 505 transitions. Second operand has 4 states, 4 states have (on average 4.25) 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) [2022-03-03 18:41:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:45,320 INFO L93 Difference]: Finished difference Result 237 states and 639 transitions. [2022-03-03 18:41:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 18:41:45,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) 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 [2022-03-03 18:41:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:45,322 INFO L225 Difference]: With dead ends: 237 [2022-03-03 18:41:45,322 INFO L226 Difference]: Without dead ends: 227 [2022-03-03 18:41:45,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:41:45,323 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:45,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 20 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:45,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-03-03 18:41:45,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 186. [2022-03-03 18:41:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.843243243243243) internal successors, (526), 185 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 526 transitions. [2022-03-03 18:41:45,334 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 526 transitions. Word has length 17 [2022-03-03 18:41:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:45,334 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 526 transitions. [2022-03-03 18:41:45,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) 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) [2022-03-03 18:41:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 526 transitions. [2022-03-03 18:41:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:45,336 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:45,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:45,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 18:41:45,336 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:45,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:45,337 INFO L85 PathProgramCache]: Analyzing trace with hash 388922220, now seen corresponding path program 1 times [2022-03-03 18:41:45,337 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:45,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990049417] [2022-03-03 18:41:45,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:45,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:45,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:45,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990049417] [2022-03-03 18:41:45,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990049417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:41:45,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:41:45,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 18:41:45,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187360255] [2022-03-03 18:41:45,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:41:45,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 18:41:45,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:45,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 18:41:45,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:41:45,363 INFO L87 Difference]: Start difference. First operand 186 states and 526 transitions. Second operand has 4 states, 4 states have (on average 4.25) 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) [2022-03-03 18:41:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:45,423 INFO L93 Difference]: Finished difference Result 317 states and 868 transitions. [2022-03-03 18:41:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 18:41:45,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) 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 [2022-03-03 18:41:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:45,427 INFO L225 Difference]: With dead ends: 317 [2022-03-03 18:41:45,427 INFO L226 Difference]: Without dead ends: 302 [2022-03-03 18:41:45,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:41:45,436 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:45,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 20 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-03-03 18:41:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 231. [2022-03-03 18:41:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 2.8869565217391306) internal successors, (664), 230 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 664 transitions. [2022-03-03 18:41:45,457 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 664 transitions. Word has length 17 [2022-03-03 18:41:45,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:45,457 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 664 transitions. [2022-03-03 18:41:45,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) 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) [2022-03-03 18:41:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 664 transitions. [2022-03-03 18:41:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:45,462 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:45,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:45,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 18:41:45,462 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:45,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash -367822358, now seen corresponding path program 2 times [2022-03-03 18:41:45,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:45,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757649616] [2022-03-03 18:41:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:45,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:45,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:45,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757649616] [2022-03-03 18:41:45,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757649616] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:41:45,493 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:41:45,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 18:41:45,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495881839] [2022-03-03 18:41:45,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:41:45,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 18:41:45,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:45,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 18:41:45,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:41:45,497 INFO L87 Difference]: Start difference. First operand 231 states and 664 transitions. Second operand has 4 states, 4 states have (on average 4.25) 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) [2022-03-03 18:41:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:45,529 INFO L93 Difference]: Finished difference Result 274 states and 779 transitions. [2022-03-03 18:41:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 18:41:45,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) 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 [2022-03-03 18:41:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:45,531 INFO L225 Difference]: With dead ends: 274 [2022-03-03 18:41:45,531 INFO L226 Difference]: Without dead ends: 274 [2022-03-03 18:41:45,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:41:45,535 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:45,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:45,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-03 18:41:45,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 243. [2022-03-03 18:41:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 2.8925619834710745) internal successors, (700), 242 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 700 transitions. [2022-03-03 18:41:45,554 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 700 transitions. Word has length 17 [2022-03-03 18:41:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:45,554 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 700 transitions. [2022-03-03 18:41:45,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) 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) [2022-03-03 18:41:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 700 transitions. [2022-03-03 18:41:45,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:45,556 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:45,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:45,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 18:41:45,561 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:45,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash -320771866, now seen corresponding path program 3 times [2022-03-03 18:41:45,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:45,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287925364] [2022-03-03 18:41:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:45,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:45,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287925364] [2022-03-03 18:41:45,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287925364] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:41:45,618 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:41:45,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 18:41:45,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842569088] [2022-03-03 18:41:45,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:41:45,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 18:41:45,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:45,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 18:41:45,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:41:45,620 INFO L87 Difference]: Start difference. First operand 243 states and 700 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-03-03 18:41:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:45,666 INFO L93 Difference]: Finished difference Result 296 states and 805 transitions. [2022-03-03 18:41:45,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 18:41:45,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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 [2022-03-03 18:41:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:45,668 INFO L225 Difference]: With dead ends: 296 [2022-03-03 18:41:45,668 INFO L226 Difference]: Without dead ends: 282 [2022-03-03 18:41:45,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:41:45,670 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:45,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 27 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:45,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-03-03 18:41:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 229. [2022-03-03 18:41:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.8421052631578947) internal successors, (648), 228 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 648 transitions. [2022-03-03 18:41:45,679 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 648 transitions. Word has length 17 [2022-03-03 18:41:45,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:45,679 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 648 transitions. [2022-03-03 18:41:45,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-03-03 18:41:45,679 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 648 transitions. [2022-03-03 18:41:45,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:45,680 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:45,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:45,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 18:41:45,681 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:45,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:45,682 INFO L85 PathProgramCache]: Analyzing trace with hash 830951980, now seen corresponding path program 2 times [2022-03-03 18:41:45,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:45,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725415360] [2022-03-03 18:41:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:45,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:45,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:45,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:45,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725415360] [2022-03-03 18:41:45,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725415360] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:41:45,728 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:41:45,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 18:41:45,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746171798] [2022-03-03 18:41:45,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:41:45,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 18:41:45,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:45,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 18:41:45,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:41:45,729 INFO L87 Difference]: Start difference. First operand 229 states and 648 transitions. Second operand has 4 states, 4 states have (on average 4.25) 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) [2022-03-03 18:41:45,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:45,772 INFO L93 Difference]: Finished difference Result 236 states and 661 transitions. [2022-03-03 18:41:45,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 18:41:45,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) 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 [2022-03-03 18:41:45,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:45,773 INFO L225 Difference]: With dead ends: 236 [2022-03-03 18:41:45,774 INFO L226 Difference]: Without dead ends: 221 [2022-03-03 18:41:45,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:41:45,775 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 32 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:45,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 20 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-03-03 18:41:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 212. [2022-03-03 18:41:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.876777251184834) internal successors, (607), 211 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 607 transitions. [2022-03-03 18:41:45,781 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 607 transitions. Word has length 17 [2022-03-03 18:41:45,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:45,781 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 607 transitions. [2022-03-03 18:41:45,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) 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) [2022-03-03 18:41:45,781 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 607 transitions. [2022-03-03 18:41:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:45,782 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:45,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:45,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 18:41:45,783 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1480901912, now seen corresponding path program 3 times [2022-03-03 18:41:45,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:45,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146309355] [2022-03-03 18:41:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:45,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:45,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146309355] [2022-03-03 18:41:45,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146309355] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:41:45,814 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:41:45,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 18:41:45,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802247695] [2022-03-03 18:41:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:41:45,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 18:41:45,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 18:41:45,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:41:45,815 INFO L87 Difference]: Start difference. First operand 212 states and 607 transitions. Second operand has 4 states, 4 states have (on average 4.25) 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) [2022-03-03 18:41:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:45,838 INFO L93 Difference]: Finished difference Result 225 states and 655 transitions. [2022-03-03 18:41:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 18:41:45,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) 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 [2022-03-03 18:41:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:45,840 INFO L225 Difference]: With dead ends: 225 [2022-03-03 18:41:45,840 INFO L226 Difference]: Without dead ends: 225 [2022-03-03 18:41:45,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 18:41:45,841 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:45,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-03-03 18:41:45,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 214. [2022-03-03 18:41:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.92018779342723) internal successors, (622), 213 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 622 transitions. [2022-03-03 18:41:45,847 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 622 transitions. Word has length 17 [2022-03-03 18:41:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:45,847 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 622 transitions. [2022-03-03 18:41:45,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) 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) [2022-03-03 18:41:45,847 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 622 transitions. [2022-03-03 18:41:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:45,848 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:45,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:45,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-03 18:41:45,848 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:45,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:45,848 INFO L85 PathProgramCache]: Analyzing trace with hash -947012380, now seen corresponding path program 4 times [2022-03-03 18:41:45,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:45,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079777558] [2022-03-03 18:41:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:45,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:45,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:45,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079777558] [2022-03-03 18:41:45,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079777558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:41:45,877 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:41:45,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 18:41:45,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394600061] [2022-03-03 18:41:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:41:45,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 18:41:45,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 18:41:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:41:45,878 INFO L87 Difference]: Start difference. First operand 214 states and 622 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-03-03 18:41:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:45,909 INFO L93 Difference]: Finished difference Result 217 states and 619 transitions. [2022-03-03 18:41:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 18:41:45,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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 [2022-03-03 18:41:45,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:45,910 INFO L225 Difference]: With dead ends: 217 [2022-03-03 18:41:45,910 INFO L226 Difference]: Without dead ends: 205 [2022-03-03 18:41:45,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 18:41:45,911 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:45,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 21 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-03-03 18:41:45,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 193. [2022-03-03 18:41:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.9114583333333335) internal successors, (559), 192 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 559 transitions. [2022-03-03 18:41:45,915 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 559 transitions. Word has length 17 [2022-03-03 18:41:45,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:45,915 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 559 transitions. [2022-03-03 18:41:45,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-03-03 18:41:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 559 transitions. [2022-03-03 18:41:45,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:41:45,916 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:45,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:45,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 18:41:45,916 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:45,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:45,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2082193652, now seen corresponding path program 1 times [2022-03-03 18:41:45,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:45,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113554716] [2022-03-03 18:41:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:45,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:45,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:45,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113554716] [2022-03-03 18:41:45,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113554716] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:45,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477289984] [2022-03-03 18:41:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:45,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:45,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:45,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:45,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 18:41:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:45,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-03 18:41:45,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:46,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:46,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477289984] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:46,086 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:46,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-03-03 18:41:46,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397087952] [2022-03-03 18:41:46,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:46,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 18:41:46,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:46,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 18:41:46,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 18:41:46,088 INFO L87 Difference]: Start difference. First operand 193 states and 559 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:46,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:46,142 INFO L93 Difference]: Finished difference Result 251 states and 731 transitions. [2022-03-03 18:41:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 18:41:46,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-03 18:41:46,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:46,144 INFO L225 Difference]: With dead ends: 251 [2022-03-03 18:41:46,144 INFO L226 Difference]: Without dead ends: 251 [2022-03-03 18:41:46,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:41:46,145 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:46,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 28 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-03-03 18:41:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 190. [2022-03-03 18:41:46,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.9100529100529102) internal successors, (550), 189 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 550 transitions. [2022-03-03 18:41:46,150 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 550 transitions. Word has length 19 [2022-03-03 18:41:46,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:46,150 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 550 transitions. [2022-03-03 18:41:46,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 550 transitions. [2022-03-03 18:41:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:41:46,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:46,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:46,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:46,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-03 18:41:46,370 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:46,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1166690382, now seen corresponding path program 1 times [2022-03-03 18:41:46,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:46,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953695128] [2022-03-03 18:41:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:46,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:46,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953695128] [2022-03-03 18:41:46,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953695128] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:46,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138892345] [2022-03-03 18:41:46,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:46,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:46,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:46,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:46,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 18:41:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:46,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 18:41:46,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:46,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:46,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138892345] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:46,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:46,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2022-03-03 18:41:46,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549471057] [2022-03-03 18:41:46,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:46,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 18:41:46,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:46,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 18:41:46,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:41:46,722 INFO L87 Difference]: Start difference. First operand 190 states and 550 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:46,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:46,781 INFO L93 Difference]: Finished difference Result 516 states and 1501 transitions. [2022-03-03 18:41:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 18:41:46,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-03 18:41:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:46,784 INFO L225 Difference]: With dead ends: 516 [2022-03-03 18:41:46,784 INFO L226 Difference]: Without dead ends: 501 [2022-03-03 18:41:46,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:41:46,785 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 44 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:46,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 161 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-03-03 18:41:46,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 287. [2022-03-03 18:41:46,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 3.1363636363636362) internal successors, (897), 286 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 897 transitions. [2022-03-03 18:41:46,794 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 897 transitions. Word has length 21 [2022-03-03 18:41:46,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:46,794 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 897 transitions. [2022-03-03 18:41:46,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 897 transitions. [2022-03-03 18:41:46,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:41:46,795 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:46,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:46,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:47,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:47,017 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:47,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2047129442, now seen corresponding path program 2 times [2022-03-03 18:41:47,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:47,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211061372] [2022-03-03 18:41:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:47,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:47,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:47,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211061372] [2022-03-03 18:41:47,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211061372] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:47,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992534161] [2022-03-03 18:41:47,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:47,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:47,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:47,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:47,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 18:41:47,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:47,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:47,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 18:41:47,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:47,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:47,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992534161] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:47,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:47,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2022-03-03 18:41:47,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116244356] [2022-03-03 18:41:47,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:47,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 18:41:47,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:47,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 18:41:47,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:41:47,336 INFO L87 Difference]: Start difference. First operand 287 states and 897 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:47,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:47,387 INFO L93 Difference]: Finished difference Result 609 states and 1835 transitions. [2022-03-03 18:41:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 18:41:47,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-03 18:41:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:47,390 INFO L225 Difference]: With dead ends: 609 [2022-03-03 18:41:47,390 INFO L226 Difference]: Without dead ends: 594 [2022-03-03 18:41:47,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:41:47,391 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 59 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:47,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 138 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:47,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-03-03 18:41:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 376. [2022-03-03 18:41:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.2346666666666666) internal successors, (1213), 375 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1213 transitions. [2022-03-03 18:41:47,400 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1213 transitions. Word has length 21 [2022-03-03 18:41:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:47,400 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 1213 transitions. [2022-03-03 18:41:47,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1213 transitions. [2022-03-03 18:41:47,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:41:47,402 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:47,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:47,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:47,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:47,615 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2140019540, now seen corresponding path program 3 times [2022-03-03 18:41:47,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:47,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268219283] [2022-03-03 18:41:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:47,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:47,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:47,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268219283] [2022-03-03 18:41:47,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268219283] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:47,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262795919] [2022-03-03 18:41:47,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:41:47,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:47,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:47,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:47,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 18:41:47,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 18:41:47,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:47,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 18:41:47,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:47,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:47,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262795919] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:47,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:47,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2022-03-03 18:41:47,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047723172] [2022-03-03 18:41:47,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:47,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:41:47,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:47,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:41:47,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:47,930 INFO L87 Difference]: Start difference. First operand 376 states and 1213 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:48,062 INFO L93 Difference]: Finished difference Result 683 states and 2108 transitions. [2022-03-03 18:41:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 18:41:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-03 18:41:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:48,065 INFO L225 Difference]: With dead ends: 683 [2022-03-03 18:41:48,065 INFO L226 Difference]: Without dead ends: 668 [2022-03-03 18:41:48,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:41:48,066 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 41 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:48,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 256 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-03-03 18:41:48,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 424. [2022-03-03 18:41:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 3.3120567375886525) internal successors, (1401), 423 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1401 transitions. [2022-03-03 18:41:48,077 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1401 transitions. Word has length 21 [2022-03-03 18:41:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:48,077 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 1401 transitions. [2022-03-03 18:41:48,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1401 transitions. [2022-03-03 18:41:48,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:41:48,078 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:48,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:48,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:48,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-03 18:41:48,295 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:48,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1117539740, now seen corresponding path program 4 times [2022-03-03 18:41:48,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:48,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258631286] [2022-03-03 18:41:48,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:48,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:48,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:48,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258631286] [2022-03-03 18:41:48,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258631286] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:48,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77006740] [2022-03-03 18:41:48,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:41:48,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:48,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:48,357 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:48,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 18:41:48,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:41:48,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:48,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 18:41:48,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:48,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:41:48,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77006740] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:48,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:48,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2022-03-03 18:41:48,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599121419] [2022-03-03 18:41:48,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:48,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 18:41:48,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 18:41:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:41:48,613 INFO L87 Difference]: Start difference. First operand 424 states and 1401 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:48,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:48,723 INFO L93 Difference]: Finished difference Result 727 states and 2284 transitions. [2022-03-03 18:41:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 18:41:48,724 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-03 18:41:48,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:48,727 INFO L225 Difference]: With dead ends: 727 [2022-03-03 18:41:48,727 INFO L226 Difference]: Without dead ends: 712 [2022-03-03 18:41:48,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:41:48,728 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 58 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:48,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 193 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-03-03 18:41:48,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 497. [2022-03-03 18:41:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 3.3649193548387095) internal successors, (1669), 496 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1669 transitions. [2022-03-03 18:41:48,740 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1669 transitions. Word has length 21 [2022-03-03 18:41:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:48,740 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 1669 transitions. [2022-03-03 18:41:48,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:48,740 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1669 transitions. [2022-03-03 18:41:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:41:48,741 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:48,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:48,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:48,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:48,960 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash -466698584, now seen corresponding path program 5 times [2022-03-03 18:41:48,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:48,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021429623] [2022-03-03 18:41:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:49,035 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:49,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021429623] [2022-03-03 18:41:49,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021429623] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:49,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728090165] [2022-03-03 18:41:49,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:41:49,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:49,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:49,036 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:49,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 18:41:49,058 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:49,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:49,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 18:41:49,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:49,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:41:49,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728090165] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:49,270 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:49,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2022-03-03 18:41:49,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519589673] [2022-03-03 18:41:49,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:49,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:41:49,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:49,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:41:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:49,271 INFO L87 Difference]: Start difference. First operand 497 states and 1669 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:49,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:49,388 INFO L93 Difference]: Finished difference Result 846 states and 2684 transitions. [2022-03-03 18:41:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 18:41:49,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-03 18:41:49,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:49,392 INFO L225 Difference]: With dead ends: 846 [2022-03-03 18:41:49,392 INFO L226 Difference]: Without dead ends: 831 [2022-03-03 18:41:49,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-03 18:41:49,393 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 60 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:49,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 181 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-03-03 18:41:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 568. [2022-03-03 18:41:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 3.4038800705467374) internal successors, (1930), 567 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1930 transitions. [2022-03-03 18:41:49,406 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1930 transitions. Word has length 21 [2022-03-03 18:41:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:49,406 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1930 transitions. [2022-03-03 18:41:49,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1930 transitions. [2022-03-03 18:41:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:41:49,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:49,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:49,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:49,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:49,627 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:49,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1622751956, now seen corresponding path program 6 times [2022-03-03 18:41:49,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:49,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125934176] [2022-03-03 18:41:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:49,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:49,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125934176] [2022-03-03 18:41:49,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125934176] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:49,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088637417] [2022-03-03 18:41:49,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:41:49,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:49,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:49,684 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:49,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 18:41:49,706 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 18:41:49,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:49,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 18:41:49,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:49,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:41:49,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088637417] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:49,902 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 18:41:49,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-03-03 18:41:49,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156642769] [2022-03-03 18:41:49,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:41:49,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 18:41:49,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 18:41:49,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:41:49,903 INFO L87 Difference]: Start difference. First operand 568 states and 1930 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:49,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:49,946 INFO L93 Difference]: Finished difference Result 852 states and 2756 transitions. [2022-03-03 18:41:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 18:41:49,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-03 18:41:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:49,951 INFO L225 Difference]: With dead ends: 852 [2022-03-03 18:41:49,951 INFO L226 Difference]: Without dead ends: 837 [2022-03-03 18:41:49,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:41:49,951 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 30 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:49,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 113 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-03-03 18:41:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 613. [2022-03-03 18:41:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 3.4526143790849675) internal successors, (2113), 612 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 2113 transitions. [2022-03-03 18:41:49,966 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 2113 transitions. Word has length 21 [2022-03-03 18:41:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:49,966 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 2113 transitions. [2022-03-03 18:41:49,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 2113 transitions. [2022-03-03 18:41:49,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:49,967 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:49,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:49,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:50,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-03 18:41:50,176 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:50,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:50,176 INFO L85 PathProgramCache]: Analyzing trace with hash 271449364, now seen corresponding path program 7 times [2022-03-03 18:41:50,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:50,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432789719] [2022-03-03 18:41:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:50,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:50,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:50,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432789719] [2022-03-03 18:41:50,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432789719] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:50,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209119638] [2022-03-03 18:41:50,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:41:50,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:50,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:50,208 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:50,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 18:41:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:50,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:50,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:50,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:50,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209119638] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:50,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:50,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-03-03 18:41:50,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337439155] [2022-03-03 18:41:50,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:50,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 18:41:50,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:50,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 18:41:50,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:41:50,307 INFO L87 Difference]: Start difference. First operand 613 states and 2113 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:50,406 INFO L93 Difference]: Finished difference Result 1015 states and 3183 transitions. [2022-03-03 18:41:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 18:41:50,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:50,411 INFO L225 Difference]: With dead ends: 1015 [2022-03-03 18:41:50,411 INFO L226 Difference]: Without dead ends: 1015 [2022-03-03 18:41:50,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:41:50,412 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 96 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:50,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 75 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:50,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-03-03 18:41:50,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 679. [2022-03-03 18:41:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 3.3997050147492627) internal successors, (2305), 678 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2305 transitions. [2022-03-03 18:41:50,430 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 2305 transitions. Word has length 23 [2022-03-03 18:41:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:50,430 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 2305 transitions. [2022-03-03 18:41:50,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 2305 transitions. [2022-03-03 18:41:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:50,432 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:50,432 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:50,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:50,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-03 18:41:50,648 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash -914641452, now seen corresponding path program 8 times [2022-03-03 18:41:50,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:50,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586099025] [2022-03-03 18:41:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:50,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:50,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:50,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586099025] [2022-03-03 18:41:50,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586099025] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:50,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67786322] [2022-03-03 18:41:50,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:50,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:50,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:50,675 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:50,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:50,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:50,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:50,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:50,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 18:41:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:50,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:50,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67786322] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:50,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:50,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-03-03 18:41:50,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900537634] [2022-03-03 18:41:50,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:50,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 18:41:50,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:50,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 18:41:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:41:50,775 INFO L87 Difference]: Start difference. First operand 679 states and 2305 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:50,870 INFO L93 Difference]: Finished difference Result 1019 states and 3281 transitions. [2022-03-03 18:41:50,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 18:41:50,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:50,874 INFO L225 Difference]: With dead ends: 1019 [2022-03-03 18:41:50,875 INFO L226 Difference]: Without dead ends: 994 [2022-03-03 18:41:50,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:50,875 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 91 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:50,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 42 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-03-03 18:41:50,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 833. [2022-03-03 18:41:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 3.3822115384615383) internal successors, (2814), 832 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 2814 transitions. [2022-03-03 18:41:50,893 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 2814 transitions. Word has length 23 [2022-03-03 18:41:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:50,893 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 2814 transitions. [2022-03-03 18:41:50,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 2814 transitions. [2022-03-03 18:41:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:50,895 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:50,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:50,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:51,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-03 18:41:51,111 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:51,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1495214352, now seen corresponding path program 9 times [2022-03-03 18:41:51,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:51,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602967474] [2022-03-03 18:41:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:51,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:51,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:51,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602967474] [2022-03-03 18:41:51,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602967474] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:51,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546711788] [2022-03-03 18:41:51,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:41:51,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:51,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:51,138 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:51,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 18:41:51,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:41:51,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:51,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:51,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:51,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:51,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546711788] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:51,253 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:51,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-03-03 18:41:51,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856972886] [2022-03-03 18:41:51,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:51,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 18:41:51,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:51,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 18:41:51,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:41:51,255 INFO L87 Difference]: Start difference. First operand 833 states and 2814 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:51,345 INFO L93 Difference]: Finished difference Result 1551 states and 5055 transitions. [2022-03-03 18:41:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 18:41:51,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:51,352 INFO L225 Difference]: With dead ends: 1551 [2022-03-03 18:41:51,352 INFO L226 Difference]: Without dead ends: 1515 [2022-03-03 18:41:51,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:51,353 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 102 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:51,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 44 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:51,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-03-03 18:41:51,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1055. [2022-03-03 18:41:51,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 3.461100569259962) internal successors, (3648), 1054 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 3648 transitions. [2022-03-03 18:41:51,378 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 3648 transitions. Word has length 23 [2022-03-03 18:41:51,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:51,378 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 3648 transitions. [2022-03-03 18:41:51,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 3648 transitions. [2022-03-03 18:41:51,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:51,380 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:51,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:51,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:51,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:51,596 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash 9646224, now seen corresponding path program 10 times [2022-03-03 18:41:51,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:51,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378745538] [2022-03-03 18:41:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:51,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:51,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:51,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378745538] [2022-03-03 18:41:51,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378745538] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:51,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829446932] [2022-03-03 18:41:51,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:41:51,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:51,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:51,621 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:51,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 18:41:51,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:41:51,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:51,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:51,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:51,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:51,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829446932] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:51,707 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:51,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-03-03 18:41:51,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960370206] [2022-03-03 18:41:51,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:51,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 18:41:51,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:51,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 18:41:51,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-03 18:41:51,708 INFO L87 Difference]: Start difference. First operand 1055 states and 3648 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:51,785 INFO L93 Difference]: Finished difference Result 1290 states and 4241 transitions. [2022-03-03 18:41:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 18:41:51,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:51,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:51,791 INFO L225 Difference]: With dead ends: 1290 [2022-03-03 18:41:51,791 INFO L226 Difference]: Without dead ends: 1290 [2022-03-03 18:41:51,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:41:51,793 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 80 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:51,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 46 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-03-03 18:41:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1059. [2022-03-03 18:41:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 3.4224952741020793) internal successors, (3621), 1058 states have internal predecessors, (3621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 3621 transitions. [2022-03-03 18:41:51,818 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 3621 transitions. Word has length 23 [2022-03-03 18:41:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:51,818 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 3621 transitions. [2022-03-03 18:41:51,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 3621 transitions. [2022-03-03 18:41:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:51,821 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:51,821 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:51,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:52,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:52,037 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:52,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:52,038 INFO L85 PathProgramCache]: Analyzing trace with hash 456257100, now seen corresponding path program 11 times [2022-03-03 18:41:52,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:52,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176787555] [2022-03-03 18:41:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:52,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:52,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:52,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176787555] [2022-03-03 18:41:52,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176787555] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:52,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325000180] [2022-03-03 18:41:52,066 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:41:52,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:52,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:52,067 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:52,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 18:41:52,091 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:41:52,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:52,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:52,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:52,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:52,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325000180] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:52,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:52,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-03-03 18:41:52,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469159631] [2022-03-03 18:41:52,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:52,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 18:41:52,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:52,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 18:41:52,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 18:41:52,183 INFO L87 Difference]: Start difference. First operand 1059 states and 3621 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:52,257 INFO L93 Difference]: Finished difference Result 1286 states and 4195 transitions. [2022-03-03 18:41:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 18:41:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:52,262 INFO L225 Difference]: With dead ends: 1286 [2022-03-03 18:41:52,262 INFO L226 Difference]: Without dead ends: 1280 [2022-03-03 18:41:52,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-03 18:41:52,263 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 78 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:52,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 41 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:52,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-03-03 18:41:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1084. [2022-03-03 18:41:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1083 states have (on average 3.3979686057248384) internal successors, (3680), 1083 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 3680 transitions. [2022-03-03 18:41:52,287 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 3680 transitions. Word has length 23 [2022-03-03 18:41:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:52,287 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 3680 transitions. [2022-03-03 18:41:52,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3680 transitions. [2022-03-03 18:41:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:52,290 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:52,290 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:52,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:52,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-03-03 18:41:52,506 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1608804944, now seen corresponding path program 12 times [2022-03-03 18:41:52,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:52,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467035824] [2022-03-03 18:41:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:52,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:52,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:52,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:52,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467035824] [2022-03-03 18:41:52,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467035824] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:52,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733612843] [2022-03-03 18:41:52,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:41:52,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:52,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:52,552 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:52,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 18:41:52,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:41:52,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:52,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:52,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:52,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:52,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733612843] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:52,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:52,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-03-03 18:41:52,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487974497] [2022-03-03 18:41:52,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:52,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:41:52,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:52,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:41:52,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:52,703 INFO L87 Difference]: Start difference. First operand 1084 states and 3680 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:53,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:53,143 INFO L93 Difference]: Finished difference Result 3419 states and 10720 transitions. [2022-03-03 18:41:53,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:41:53,143 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:53,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:53,158 INFO L225 Difference]: With dead ends: 3419 [2022-03-03 18:41:53,158 INFO L226 Difference]: Without dead ends: 3373 [2022-03-03 18:41:53,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=1262, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 18:41:53,159 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 462 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:53,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 71 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:53,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2022-03-03 18:41:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 1577. [2022-03-03 18:41:53,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1576 states have (on average 3.5266497461928936) internal successors, (5558), 1576 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:53,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 5558 transitions. [2022-03-03 18:41:53,213 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 5558 transitions. Word has length 23 [2022-03-03 18:41:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:53,213 INFO L470 AbstractCegarLoop]: Abstraction has 1577 states and 5558 transitions. [2022-03-03 18:41:53,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:53,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 5558 transitions. [2022-03-03 18:41:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:53,216 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:53,216 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:53,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:53,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:53,432 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1526508494, now seen corresponding path program 13 times [2022-03-03 18:41:53,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:53,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300845579] [2022-03-03 18:41:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:53,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:53,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:53,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300845579] [2022-03-03 18:41:53,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300845579] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:53,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957427761] [2022-03-03 18:41:53,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:41:53,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:53,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:53,459 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:53,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 18:41:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:53,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:53,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:53,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:53,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957427761] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:53,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:53,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-03-03 18:41:53,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953232408] [2022-03-03 18:41:53,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:53,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 18:41:53,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 18:41:53,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-03 18:41:53,551 INFO L87 Difference]: Start difference. First operand 1577 states and 5558 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:53,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:53,634 INFO L93 Difference]: Finished difference Result 2581 states and 8875 transitions. [2022-03-03 18:41:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 18:41:53,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:53,647 INFO L225 Difference]: With dead ends: 2581 [2022-03-03 18:41:53,648 INFO L226 Difference]: Without dead ends: 2581 [2022-03-03 18:41:53,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:41:53,648 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 101 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:53,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 45 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2022-03-03 18:41:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 1980. [2022-03-03 18:41:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1979 states have (on average 3.6195048004042447) internal successors, (7163), 1979 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 7163 transitions. [2022-03-03 18:41:53,701 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 7163 transitions. Word has length 23 [2022-03-03 18:41:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:53,701 INFO L470 AbstractCegarLoop]: Abstraction has 1980 states and 7163 transitions. [2022-03-03 18:41:53,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 7163 transitions. [2022-03-03 18:41:53,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:53,706 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:53,706 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:53,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:53,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:53,919 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash 18908238, now seen corresponding path program 14 times [2022-03-03 18:41:53,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:53,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169529918] [2022-03-03 18:41:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:53,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:53,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:53,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169529918] [2022-03-03 18:41:53,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169529918] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:53,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510652303] [2022-03-03 18:41:53,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:53,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:53,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:53,947 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:53,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 18:41:53,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:53,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:53,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:53,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:54,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:54,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510652303] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:54,042 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:54,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-03-03 18:41:54,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086645295] [2022-03-03 18:41:54,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:54,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:41:54,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:41:54,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:54,043 INFO L87 Difference]: Start difference. First operand 1980 states and 7163 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:54,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:54,479 INFO L93 Difference]: Finished difference Result 4590 states and 15506 transitions. [2022-03-03 18:41:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 18:41:54,480 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:54,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:54,491 INFO L225 Difference]: With dead ends: 4590 [2022-03-03 18:41:54,492 INFO L226 Difference]: Without dead ends: 4355 [2022-03-03 18:41:54,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 18:41:54,493 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 243 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:54,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 122 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4355 states. [2022-03-03 18:41:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4355 to 3174. [2022-03-03 18:41:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3173 states have (on average 3.6706586826347305) internal successors, (11647), 3173 states have internal predecessors, (11647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 11647 transitions. [2022-03-03 18:41:54,597 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 11647 transitions. Word has length 23 [2022-03-03 18:41:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:54,598 INFO L470 AbstractCegarLoop]: Abstraction has 3174 states and 11647 transitions. [2022-03-03 18:41:54,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:54,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 11647 transitions. [2022-03-03 18:41:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:54,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:54,606 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:54,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:54,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-03-03 18:41:54,820 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash -593433466, now seen corresponding path program 15 times [2022-03-03 18:41:54,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:54,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641140852] [2022-03-03 18:41:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:54,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:54,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:54,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641140852] [2022-03-03 18:41:54,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641140852] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:54,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180344018] [2022-03-03 18:41:54,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:41:54,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:54,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:54,846 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:54,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 18:41:54,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:41:54,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:54,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:54,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:54,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:54,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180344018] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:54,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:54,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-03-03 18:41:54,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146474335] [2022-03-03 18:41:54,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:54,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:41:54,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:54,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:41:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:54,970 INFO L87 Difference]: Start difference. First operand 3174 states and 11647 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:55,398 INFO L93 Difference]: Finished difference Result 7723 states and 26392 transitions. [2022-03-03 18:41:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 18:41:55,399 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:55,422 INFO L225 Difference]: With dead ends: 7723 [2022-03-03 18:41:55,422 INFO L226 Difference]: Without dead ends: 7502 [2022-03-03 18:41:55,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 18:41:55,423 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 304 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:55,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 81 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7502 states. [2022-03-03 18:41:55,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7502 to 5181. [2022-03-03 18:41:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 3.6795366795366795) internal successors, (19060), 5180 states have internal predecessors, (19060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 19060 transitions. [2022-03-03 18:41:55,576 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 19060 transitions. Word has length 23 [2022-03-03 18:41:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:55,577 INFO L470 AbstractCegarLoop]: Abstraction has 5181 states and 19060 transitions. [2022-03-03 18:41:55,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 19060 transitions. [2022-03-03 18:41:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:55,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:55,588 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:55,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:55,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:55,802 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:55,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash -712649734, now seen corresponding path program 16 times [2022-03-03 18:41:55,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:55,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934499651] [2022-03-03 18:41:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:55,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:55,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:55,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934499651] [2022-03-03 18:41:55,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934499651] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:55,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669644186] [2022-03-03 18:41:55,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:41:55,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:55,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:55,825 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:55,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 18:41:55,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:41:55,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:55,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:55,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:55,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:55,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669644186] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:55,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:55,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-03-03 18:41:55,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909981736] [2022-03-03 18:41:55,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:55,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 18:41:55,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 18:41:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:41:55,947 INFO L87 Difference]: Start difference. First operand 5181 states and 19060 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:56,064 INFO L93 Difference]: Finished difference Result 5996 states and 21312 transitions. [2022-03-03 18:41:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 18:41:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:56,081 INFO L225 Difference]: With dead ends: 5996 [2022-03-03 18:41:56,081 INFO L226 Difference]: Without dead ends: 5952 [2022-03-03 18:41:56,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:56,082 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 115 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:56,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 42 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5952 states. [2022-03-03 18:41:56,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5952 to 5234. [2022-03-03 18:41:56,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 3.675329638830499) internal successors, (19233), 5233 states have internal predecessors, (19233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:56,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 19233 transitions. [2022-03-03 18:41:56,200 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 19233 transitions. Word has length 23 [2022-03-03 18:41:56,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:56,200 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 19233 transitions. [2022-03-03 18:41:56,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 19233 transitions. [2022-03-03 18:41:56,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:56,210 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:56,210 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:56,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:56,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:56,423 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:56,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:56,424 INFO L85 PathProgramCache]: Analyzing trace with hash -974522626, now seen corresponding path program 17 times [2022-03-03 18:41:56,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:56,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237317827] [2022-03-03 18:41:56,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:56,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:56,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:56,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237317827] [2022-03-03 18:41:56,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237317827] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:56,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136743523] [2022-03-03 18:41:56,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:41:56,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:56,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:56,448 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:56,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 18:41:56,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:56,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:56,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:56,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:41:56,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:41:56,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136743523] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:56,545 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:56,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-03-03 18:41:56,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129919211] [2022-03-03 18:41:56,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:56,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 18:41:56,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:56,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 18:41:56,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:41:56,546 INFO L87 Difference]: Start difference. First operand 5234 states and 19233 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:56,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:56,938 INFO L93 Difference]: Finished difference Result 9182 states and 31734 transitions. [2022-03-03 18:41:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 18:41:56,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:56,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:56,964 INFO L225 Difference]: With dead ends: 9182 [2022-03-03 18:41:56,964 INFO L226 Difference]: Without dead ends: 9113 [2022-03-03 18:41:56,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=294, Invalid=1038, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 18:41:56,965 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 336 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:56,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 80 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:56,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9113 states. [2022-03-03 18:41:57,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9113 to 6200. [2022-03-03 18:41:57,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6200 states, 6199 states have (on average 3.698015809001452) internal successors, (22924), 6199 states have internal predecessors, (22924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 22924 transitions. [2022-03-03 18:41:57,151 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 22924 transitions. Word has length 23 [2022-03-03 18:41:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:57,151 INFO L470 AbstractCegarLoop]: Abstraction has 6200 states and 22924 transitions. [2022-03-03 18:41:57,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:57,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 22924 transitions. [2022-03-03 18:41:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:57,162 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:57,163 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:57,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:57,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:57,375 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1591412358, now seen corresponding path program 18 times [2022-03-03 18:41:57,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:57,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090192010] [2022-03-03 18:41:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:57,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:57,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:57,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090192010] [2022-03-03 18:41:57,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090192010] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:57,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112163626] [2022-03-03 18:41:57,406 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:41:57,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:57,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:57,407 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:57,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 18:41:57,431 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:41:57,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:57,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:57,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:41:57,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:41:57,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112163626] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:57,515 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:57,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-03-03 18:41:57,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833480368] [2022-03-03 18:41:57,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:57,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:41:57,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:57,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:41:57,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:57,516 INFO L87 Difference]: Start difference. First operand 6200 states and 22924 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:57,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:57,939 INFO L93 Difference]: Finished difference Result 10470 states and 36628 transitions. [2022-03-03 18:41:57,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 18:41:57,939 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:57,965 INFO L225 Difference]: With dead ends: 10470 [2022-03-03 18:41:57,965 INFO L226 Difference]: Without dead ends: 10415 [2022-03-03 18:41:57,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 18:41:57,966 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 264 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:57,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 99 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:57,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10415 states. [2022-03-03 18:41:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10415 to 7346. [2022-03-03 18:41:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 7345 states have (on average 3.723621511232131) internal successors, (27350), 7345 states have internal predecessors, (27350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 27350 transitions. [2022-03-03 18:41:58,198 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 27350 transitions. Word has length 23 [2022-03-03 18:41:58,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:58,198 INFO L470 AbstractCegarLoop]: Abstraction has 7346 states and 27350 transitions. [2022-03-03 18:41:58,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 27350 transitions. [2022-03-03 18:41:58,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:58,212 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:58,212 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:58,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:58,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-03 18:41:58,427 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:58,428 INFO L85 PathProgramCache]: Analyzing trace with hash -918016754, now seen corresponding path program 19 times [2022-03-03 18:41:58,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:58,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825594435] [2022-03-03 18:41:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:58,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:58,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:58,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825594435] [2022-03-03 18:41:58,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825594435] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:58,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768422533] [2022-03-03 18:41:58,448 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:41:58,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:58,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:58,449 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:58,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 18:41:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:58,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:58,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:58,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:58,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768422533] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:58,530 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:58,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-03-03 18:41:58,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552863365] [2022-03-03 18:41:58,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:58,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 18:41:58,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:58,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 18:41:58,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-03 18:41:58,531 INFO L87 Difference]: Start difference. First operand 7346 states and 27350 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:58,638 INFO L93 Difference]: Finished difference Result 8860 states and 32006 transitions. [2022-03-03 18:41:58,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 18:41:58,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:58,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:58,661 INFO L225 Difference]: With dead ends: 8860 [2022-03-03 18:41:58,661 INFO L226 Difference]: Without dead ends: 8846 [2022-03-03 18:41:58,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:41:58,661 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 57 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:58,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 54 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:58,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8846 states. [2022-03-03 18:41:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8846 to 7488. [2022-03-03 18:41:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7488 states, 7487 states have (on average 3.7205823427273943) internal successors, (27856), 7487 states have internal predecessors, (27856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 27856 transitions. [2022-03-03 18:41:58,893 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 27856 transitions. Word has length 23 [2022-03-03 18:41:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:58,893 INFO L470 AbstractCegarLoop]: Abstraction has 7488 states and 27856 transitions. [2022-03-03 18:41:58,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 27856 transitions. [2022-03-03 18:41:58,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:41:58,908 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:58,908 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:58,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:59,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-03 18:41:59,124 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:41:59,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1342327990, now seen corresponding path program 20 times [2022-03-03 18:41:59,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:59,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489657270] [2022-03-03 18:41:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:59,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:59,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489657270] [2022-03-03 18:41:59,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489657270] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:59,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398282259] [2022-03-03 18:41:59,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:59,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:59,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:59,153 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:59,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 18:41:59,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:59,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:59,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:41:59,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:59,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:41:59,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398282259] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:59,252 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:59,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-03-03 18:41:59,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285216813] [2022-03-03 18:41:59,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:59,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 18:41:59,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:59,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 18:41:59,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:41:59,253 INFO L87 Difference]: Start difference. First operand 7488 states and 27856 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:59,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:59,779 INFO L93 Difference]: Finished difference Result 13198 states and 46799 transitions. [2022-03-03 18:41:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 18:41:59,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:41:59,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:59,816 INFO L225 Difference]: With dead ends: 13198 [2022-03-03 18:41:59,816 INFO L226 Difference]: Without dead ends: 13147 [2022-03-03 18:41:59,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=298, Invalid=1108, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 18:41:59,817 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 191 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:59,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 85 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:59,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13147 states. [2022-03-03 18:41:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13147 to 9889. [2022-03-03 18:41:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9889 states, 9888 states have (on average 3.7355380258899675) internal successors, (36937), 9888 states have internal predecessors, (36937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 36937 transitions. [2022-03-03 18:42:00,021 INFO L78 Accepts]: Start accepts. Automaton has 9889 states and 36937 transitions. Word has length 23 [2022-03-03 18:42:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:00,021 INFO L470 AbstractCegarLoop]: Abstraction has 9889 states and 36937 transitions. [2022-03-03 18:42:00,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:00,021 INFO L276 IsEmpty]: Start isEmpty. Operand 9889 states and 36937 transitions. [2022-03-03 18:42:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-03 18:42:00,039 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:00,039 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:00,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-03 18:42:00,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:00,255 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:00,256 INFO L85 PathProgramCache]: Analyzing trace with hash 778321758, now seen corresponding path program 21 times [2022-03-03 18:42:00,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:00,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151822507] [2022-03-03 18:42:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:00,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:00,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:00,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151822507] [2022-03-03 18:42:00,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151822507] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:00,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277834501] [2022-03-03 18:42:00,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:00,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:00,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:00,321 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:00,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 18:42:00,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:42:00,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:00,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:42:00,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:00,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:00,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277834501] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:00,404 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:00,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-03-03 18:42:00,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020928660] [2022-03-03 18:42:00,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:00,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 18:42:00,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 18:42:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:42:00,406 INFO L87 Difference]: Start difference. First operand 9889 states and 36937 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:00,533 INFO L93 Difference]: Finished difference Result 11772 states and 42696 transitions. [2022-03-03 18:42:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 18:42:00,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-03 18:42:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:00,565 INFO L225 Difference]: With dead ends: 11772 [2022-03-03 18:42:00,565 INFO L226 Difference]: Without dead ends: 11719 [2022-03-03 18:42:00,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:42:00,566 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:00,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 60 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:42:00,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11719 states. [2022-03-03 18:42:00,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11719 to 9815. [2022-03-03 18:42:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9815 states, 9814 states have (on average 3.7139800285306706) internal successors, (36449), 9814 states have internal predecessors, (36449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9815 states to 9815 states and 36449 transitions. [2022-03-03 18:42:00,777 INFO L78 Accepts]: Start accepts. Automaton has 9815 states and 36449 transitions. Word has length 23 [2022-03-03 18:42:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:00,777 INFO L470 AbstractCegarLoop]: Abstraction has 9815 states and 36449 transitions. [2022-03-03 18:42:00,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9815 states and 36449 transitions. [2022-03-03 18:42:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-03 18:42:00,798 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:00,798 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:00,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-03 18:42:01,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:01,011 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:01,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1875112408, now seen corresponding path program 22 times [2022-03-03 18:42:01,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:01,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832046330] [2022-03-03 18:42:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:01,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:01,029 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:01,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832046330] [2022-03-03 18:42:01,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832046330] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:01,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63436423] [2022-03-03 18:42:01,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:01,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:01,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:01,031 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:01,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 18:42:01,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:01,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:01,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:42:01,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:01,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:01,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63436423] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:01,171 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:01,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-03-03 18:42:01,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687243472] [2022-03-03 18:42:01,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:01,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 18:42:01,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 18:42:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-03 18:42:01,172 INFO L87 Difference]: Start difference. First operand 9815 states and 36449 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:01,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:01,313 INFO L93 Difference]: Finished difference Result 14865 states and 53865 transitions. [2022-03-03 18:42:01,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 18:42:01,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-03-03 18:42:01,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:01,356 INFO L225 Difference]: With dead ends: 14865 [2022-03-03 18:42:01,356 INFO L226 Difference]: Without dead ends: 14851 [2022-03-03 18:42:01,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:42:01,357 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 92 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:01,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 46 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:42:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14851 states. [2022-03-03 18:42:01,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14851 to 12374. [2022-03-03 18:42:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12374 states, 12373 states have (on average 3.750990058999434) internal successors, (46411), 12373 states have internal predecessors, (46411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12374 states to 12374 states and 46411 transitions. [2022-03-03 18:42:01,692 INFO L78 Accepts]: Start accepts. Automaton has 12374 states and 46411 transitions. Word has length 25 [2022-03-03 18:42:01,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:01,693 INFO L470 AbstractCegarLoop]: Abstraction has 12374 states and 46411 transitions. [2022-03-03 18:42:01,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:01,693 INFO L276 IsEmpty]: Start isEmpty. Operand 12374 states and 46411 transitions. [2022-03-03 18:42:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-03 18:42:01,716 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:01,716 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:01,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:01,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:01,917 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:01,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:01,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1895071392, now seen corresponding path program 23 times [2022-03-03 18:42:01,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:01,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378202810] [2022-03-03 18:42:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:01,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:02,035 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:02,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378202810] [2022-03-03 18:42:02,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378202810] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:02,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251761890] [2022-03-03 18:42:02,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:02,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:02,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:02,036 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:02,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 18:42:02,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:42:02,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:02,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:42:02,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:02,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:02,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251761890] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:02,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:02,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-03-03 18:42:02,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074041863] [2022-03-03 18:42:02,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:02,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 18:42:02,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 18:42:02,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-03 18:42:02,134 INFO L87 Difference]: Start difference. First operand 12374 states and 46411 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:02,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:02,278 INFO L93 Difference]: Finished difference Result 14384 states and 52212 transitions. [2022-03-03 18:42:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 18:42:02,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-03-03 18:42:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:02,320 INFO L225 Difference]: With dead ends: 14384 [2022-03-03 18:42:02,320 INFO L226 Difference]: Without dead ends: 14331 [2022-03-03 18:42:02,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-03 18:42:02,321 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:02,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 40 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:42:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14331 states. [2022-03-03 18:42:02,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14331 to 12343. [2022-03-03 18:42:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12343 states, 12342 states have (on average 3.7488251498946688) internal successors, (46268), 12342 states have internal predecessors, (46268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12343 states to 12343 states and 46268 transitions. [2022-03-03 18:42:02,663 INFO L78 Accepts]: Start accepts. Automaton has 12343 states and 46268 transitions. Word has length 25 [2022-03-03 18:42:02,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:02,663 INFO L470 AbstractCegarLoop]: Abstraction has 12343 states and 46268 transitions. [2022-03-03 18:42:02,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 12343 states and 46268 transitions. [2022-03-03 18:42:02,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-03 18:42:02,685 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:02,686 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:02,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-03 18:42:02,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-03-03 18:42:02,886 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:02,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:02,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1021468140, now seen corresponding path program 24 times [2022-03-03 18:42:02,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:02,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405453390] [2022-03-03 18:42:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:02,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:02,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:02,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405453390] [2022-03-03 18:42:02,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405453390] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:02,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44241478] [2022-03-03 18:42:02,980 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:02,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:02,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:02,984 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:02,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 18:42:03,004 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:42:03,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:03,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 18:42:03,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:03,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:03,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44241478] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:03,083 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:03,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-03-03 18:42:03,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606902422] [2022-03-03 18:42:03,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:03,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:42:03,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:42:03,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:42:03,084 INFO L87 Difference]: Start difference. First operand 12343 states and 46268 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:03,437 INFO L93 Difference]: Finished difference Result 15025 states and 53947 transitions. [2022-03-03 18:42:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 18:42:03,437 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-03-03 18:42:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:03,476 INFO L225 Difference]: With dead ends: 15025 [2022-03-03 18:42:03,477 INFO L226 Difference]: Without dead ends: 14843 [2022-03-03 18:42:03,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:42:03,477 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 217 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:03,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 95 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:03,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14843 states. [2022-03-03 18:42:03,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14843 to 12521. [2022-03-03 18:42:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12521 states, 12520 states have (on average 3.7399361022364217) internal successors, (46824), 12520 states have internal predecessors, (46824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12521 states to 12521 states and 46824 transitions. [2022-03-03 18:42:03,825 INFO L78 Accepts]: Start accepts. Automaton has 12521 states and 46824 transitions. Word has length 25 [2022-03-03 18:42:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:03,826 INFO L470 AbstractCegarLoop]: Abstraction has 12521 states and 46824 transitions. [2022-03-03 18:42:03,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 12521 states and 46824 transitions. [2022-03-03 18:42:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:03,851 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:03,852 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:03,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:04,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-03 18:42:04,052 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1240654612, now seen corresponding path program 25 times [2022-03-03 18:42:04,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:04,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070771592] [2022-03-03 18:42:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:04,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:04,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:04,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070771592] [2022-03-03 18:42:04,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070771592] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:04,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356617086] [2022-03-03 18:42:04,203 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:04,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:04,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:04,205 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:04,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 18:42:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:04,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:04,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:04,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:04,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356617086] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:04,590 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:04,590 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-03-03 18:42:04,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192284488] [2022-03-03 18:42:04,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:04,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:04,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:04,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:04,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:04,591 INFO L87 Difference]: Start difference. First operand 12521 states and 46824 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:04,936 INFO L93 Difference]: Finished difference Result 14348 states and 52474 transitions. [2022-03-03 18:42:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:42:04,937 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:04,977 INFO L225 Difference]: With dead ends: 14348 [2022-03-03 18:42:04,977 INFO L226 Difference]: Without dead ends: 14278 [2022-03-03 18:42:04,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:04,978 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 114 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:04,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 703 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:04,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14278 states. [2022-03-03 18:42:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14278 to 13277. [2022-03-03 18:42:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13277 states, 13276 states have (on average 3.7333534197047302) internal successors, (49564), 13276 states have internal predecessors, (49564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13277 states to 13277 states and 49564 transitions. [2022-03-03 18:42:05,318 INFO L78 Accepts]: Start accepts. Automaton has 13277 states and 49564 transitions. Word has length 27 [2022-03-03 18:42:05,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:05,318 INFO L470 AbstractCegarLoop]: Abstraction has 13277 states and 49564 transitions. [2022-03-03 18:42:05,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 13277 states and 49564 transitions. [2022-03-03 18:42:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:05,344 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:05,344 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:05,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:05,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-03-03 18:42:05,544 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash -735077948, now seen corresponding path program 26 times [2022-03-03 18:42:05,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:05,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228459545] [2022-03-03 18:42:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:05,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:05,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:05,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228459545] [2022-03-03 18:42:05,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228459545] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:05,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817483234] [2022-03-03 18:42:05,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:05,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:05,613 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:05,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 18:42:05,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:05,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:05,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:05,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:05,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:06,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817483234] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:06,049 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:06,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:06,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054997137] [2022-03-03 18:42:06,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:06,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:06,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:06,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:06,051 INFO L87 Difference]: Start difference. First operand 13277 states and 49564 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:06,289 INFO L93 Difference]: Finished difference Result 14230 states and 52441 transitions. [2022-03-03 18:42:06,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:06,289 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:06,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:06,330 INFO L225 Difference]: With dead ends: 14230 [2022-03-03 18:42:06,330 INFO L226 Difference]: Without dead ends: 14200 [2022-03-03 18:42:06,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:06,331 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 105 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:06,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 476 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:42:06,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14200 states. [2022-03-03 18:42:06,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14200 to 13587. [2022-03-03 18:42:06,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13587 states, 13586 states have (on average 3.7320771382305313) internal successors, (50704), 13586 states have internal predecessors, (50704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13587 states to 13587 states and 50704 transitions. [2022-03-03 18:42:06,711 INFO L78 Accepts]: Start accepts. Automaton has 13587 states and 50704 transitions. Word has length 27 [2022-03-03 18:42:06,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:06,711 INFO L470 AbstractCegarLoop]: Abstraction has 13587 states and 50704 transitions. [2022-03-03 18:42:06,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 13587 states and 50704 transitions. [2022-03-03 18:42:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:06,738 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:06,739 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:06,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-03 18:42:06,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:06,951 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:06,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -699772612, now seen corresponding path program 27 times [2022-03-03 18:42:06,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:06,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182275989] [2022-03-03 18:42:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:06,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:07,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:07,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182275989] [2022-03-03 18:42:07,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182275989] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:07,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337972338] [2022-03-03 18:42:07,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:07,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:07,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:07,028 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:07,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 18:42:07,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:42:07,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:07,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:07,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:07,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:07,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337972338] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:07,473 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:07,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:07,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044672934] [2022-03-03 18:42:07,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:07,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:07,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:07,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:07,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:07,476 INFO L87 Difference]: Start difference. First operand 13587 states and 50704 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:07,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:07,734 INFO L93 Difference]: Finished difference Result 14461 states and 53364 transitions. [2022-03-03 18:42:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:07,735 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:07,775 INFO L225 Difference]: With dead ends: 14461 [2022-03-03 18:42:07,775 INFO L226 Difference]: Without dead ends: 14431 [2022-03-03 18:42:07,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:07,776 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 98 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:07,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 524 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14431 states. [2022-03-03 18:42:08,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14431 to 13866. [2022-03-03 18:42:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13866 states, 13865 states have (on average 3.7306887847097006) internal successors, (51726), 13865 states have internal predecessors, (51726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13866 states to 13866 states and 51726 transitions. [2022-03-03 18:42:08,132 INFO L78 Accepts]: Start accepts. Automaton has 13866 states and 51726 transitions. Word has length 27 [2022-03-03 18:42:08,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:08,132 INFO L470 AbstractCegarLoop]: Abstraction has 13866 states and 51726 transitions. [2022-03-03 18:42:08,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:08,132 INFO L276 IsEmpty]: Start isEmpty. Operand 13866 states and 51726 transitions. [2022-03-03 18:42:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:08,161 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:08,161 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:08,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-03 18:42:08,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-03 18:42:08,361 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:08,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:08,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1612841472, now seen corresponding path program 28 times [2022-03-03 18:42:08,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:08,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303427434] [2022-03-03 18:42:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:08,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:08,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:08,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303427434] [2022-03-03 18:42:08,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303427434] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:08,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305763543] [2022-03-03 18:42:08,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:08,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:08,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:08,425 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:08,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 18:42:08,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:08,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:08,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:08,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:08,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:08,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305763543] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:08,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:08,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:08,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164912432] [2022-03-03 18:42:08,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:08,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:08,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:08,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:08,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:08,799 INFO L87 Difference]: Start difference. First operand 13866 states and 51726 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:09,125 INFO L93 Difference]: Finished difference Result 14772 states and 54367 transitions. [2022-03-03 18:42:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:09,165 INFO L225 Difference]: With dead ends: 14772 [2022-03-03 18:42:09,166 INFO L226 Difference]: Without dead ends: 14726 [2022-03-03 18:42:09,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:09,166 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 105 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:09,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 476 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14726 states. [2022-03-03 18:42:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14726 to 14096. [2022-03-03 18:42:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14096 states, 14095 states have (on average 3.7281305427456544) internal successors, (52548), 14095 states have internal predecessors, (52548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14096 states to 14096 states and 52548 transitions. [2022-03-03 18:42:09,502 INFO L78 Accepts]: Start accepts. Automaton has 14096 states and 52548 transitions. Word has length 27 [2022-03-03 18:42:09,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:09,503 INFO L470 AbstractCegarLoop]: Abstraction has 14096 states and 52548 transitions. [2022-03-03 18:42:09,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:09,503 INFO L276 IsEmpty]: Start isEmpty. Operand 14096 states and 52548 transitions. [2022-03-03 18:42:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:09,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:09,534 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:09,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:09,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-03 18:42:09,735 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1062035200, now seen corresponding path program 29 times [2022-03-03 18:42:09,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:09,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506407670] [2022-03-03 18:42:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:09,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:09,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:09,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506407670] [2022-03-03 18:42:09,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506407670] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:09,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879458640] [2022-03-03 18:42:09,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:09,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:09,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:09,811 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:09,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 18:42:09,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:42:09,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:09,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:09,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:10,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:10,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879458640] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:10,232 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:10,232 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-03-03 18:42:10,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177442218] [2022-03-03 18:42:10,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:10,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:10,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:10,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:10,233 INFO L87 Difference]: Start difference. First operand 14096 states and 52548 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:10,586 INFO L93 Difference]: Finished difference Result 15755 states and 57606 transitions. [2022-03-03 18:42:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:42:10,586 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:10,628 INFO L225 Difference]: With dead ends: 15755 [2022-03-03 18:42:10,629 INFO L226 Difference]: Without dead ends: 15715 [2022-03-03 18:42:10,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:10,629 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 120 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:10,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 788 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:10,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15715 states. [2022-03-03 18:42:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15715 to 14639. [2022-03-03 18:42:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14639 states, 14638 states have (on average 3.7261237874026505) internal successors, (54543), 14638 states have internal predecessors, (54543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14639 states to 14639 states and 54543 transitions. [2022-03-03 18:42:10,945 INFO L78 Accepts]: Start accepts. Automaton has 14639 states and 54543 transitions. Word has length 27 [2022-03-03 18:42:10,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:10,946 INFO L470 AbstractCegarLoop]: Abstraction has 14639 states and 54543 transitions. [2022-03-03 18:42:10,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:10,946 INFO L276 IsEmpty]: Start isEmpty. Operand 14639 states and 54543 transitions. [2022-03-03 18:42:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:10,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:10,976 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:10,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-03 18:42:11,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-03 18:42:11,177 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1241990722, now seen corresponding path program 30 times [2022-03-03 18:42:11,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:11,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005775458] [2022-03-03 18:42:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:11,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:11,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:11,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005775458] [2022-03-03 18:42:11,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005775458] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:11,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245589291] [2022-03-03 18:42:11,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:11,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:11,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:11,250 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:11,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 18:42:11,272 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:42:11,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:11,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:11,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:11,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:11,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245589291] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:11,617 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:11,617 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:11,617 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202006421] [2022-03-03 18:42:11,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:11,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:11,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:11,618 INFO L87 Difference]: Start difference. First operand 14639 states and 54543 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:11,876 INFO L93 Difference]: Finished difference Result 15284 states and 56431 transitions. [2022-03-03 18:42:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:11,876 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:11,917 INFO L225 Difference]: With dead ends: 15284 [2022-03-03 18:42:11,918 INFO L226 Difference]: Without dead ends: 15139 [2022-03-03 18:42:11,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:11,918 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 82 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:11,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 501 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15139 states. [2022-03-03 18:42:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15139 to 14813. [2022-03-03 18:42:12,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14813 states, 14812 states have (on average 3.7248177153659197) internal successors, (55172), 14812 states have internal predecessors, (55172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14813 states to 14813 states and 55172 transitions. [2022-03-03 18:42:12,320 INFO L78 Accepts]: Start accepts. Automaton has 14813 states and 55172 transitions. Word has length 27 [2022-03-03 18:42:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:12,320 INFO L470 AbstractCegarLoop]: Abstraction has 14813 states and 55172 transitions. [2022-03-03 18:42:12,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 14813 states and 55172 transitions. [2022-03-03 18:42:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:12,355 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:12,355 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:12,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-03-03 18:42:12,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-03 18:42:12,556 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1777023434, now seen corresponding path program 31 times [2022-03-03 18:42:12,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:12,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054566448] [2022-03-03 18:42:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:12,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:12,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:12,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054566448] [2022-03-03 18:42:12,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054566448] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:12,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951599442] [2022-03-03 18:42:12,617 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:12,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:12,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:12,618 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:12,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 18:42:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:12,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:12,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:12,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:13,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951599442] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:13,006 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:13,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:13,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646019727] [2022-03-03 18:42:13,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:13,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:13,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:13,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:13,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:13,006 INFO L87 Difference]: Start difference. First operand 14813 states and 55172 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:13,257 INFO L93 Difference]: Finished difference Result 15596 states and 57493 transitions. [2022-03-03 18:42:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:13,257 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:13,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:13,303 INFO L225 Difference]: With dead ends: 15596 [2022-03-03 18:42:13,303 INFO L226 Difference]: Without dead ends: 15566 [2022-03-03 18:42:13,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:13,304 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 95 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:13,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 566 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:13,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15566 states. [2022-03-03 18:42:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15566 to 14939. [2022-03-03 18:42:13,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14939 states, 14938 states have (on average 3.7268710670772527) internal successors, (55672), 14938 states have internal predecessors, (55672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14939 states to 14939 states and 55672 transitions. [2022-03-03 18:42:13,624 INFO L78 Accepts]: Start accepts. Automaton has 14939 states and 55672 transitions. Word has length 27 [2022-03-03 18:42:13,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:13,624 INFO L470 AbstractCegarLoop]: Abstraction has 14939 states and 55672 transitions. [2022-03-03 18:42:13,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 14939 states and 55672 transitions. [2022-03-03 18:42:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:13,657 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:13,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:13,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-03 18:42:13,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-03-03 18:42:13,857 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:13,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:13,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1260332730, now seen corresponding path program 32 times [2022-03-03 18:42:13,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:13,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153482914] [2022-03-03 18:42:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:13,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:13,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153482914] [2022-03-03 18:42:13,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153482914] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:13,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85968525] [2022-03-03 18:42:13,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:13,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:13,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:13,927 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:13,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 18:42:13,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:13,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:13,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:13,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:14,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:14,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85968525] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:14,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:14,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:14,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57827778] [2022-03-03 18:42:14,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:14,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:14,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:14,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:14,286 INFO L87 Difference]: Start difference. First operand 14939 states and 55672 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:14,525 INFO L93 Difference]: Finished difference Result 15554 states and 57492 transitions. [2022-03-03 18:42:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:14,569 INFO L225 Difference]: With dead ends: 15554 [2022-03-03 18:42:14,569 INFO L226 Difference]: Without dead ends: 15466 [2022-03-03 18:42:14,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:14,570 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 68 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:14,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 512 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:42:14,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2022-03-03 18:42:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 15165. [2022-03-03 18:42:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15165 states, 15164 states have (on average 3.7211158005803218) internal successors, (56427), 15164 states have internal predecessors, (56427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 56427 transitions. [2022-03-03 18:42:14,911 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 56427 transitions. Word has length 27 [2022-03-03 18:42:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:14,911 INFO L470 AbstractCegarLoop]: Abstraction has 15165 states and 56427 transitions. [2022-03-03 18:42:14,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 56427 transitions. [2022-03-03 18:42:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:14,941 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:14,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:14,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:15,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:15,142 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1455016062, now seen corresponding path program 33 times [2022-03-03 18:42:15,143 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:15,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994323079] [2022-03-03 18:42:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:15,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:15,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:15,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994323079] [2022-03-03 18:42:15,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994323079] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:15,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108577779] [2022-03-03 18:42:15,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:15,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:15,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:15,224 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:15,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 18:42:15,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 18:42:15,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:15,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:15,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:15,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:15,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108577779] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:15,630 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:15,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-03-03 18:42:15,631 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201472544] [2022-03-03 18:42:15,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:15,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:15,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:15,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:15,632 INFO L87 Difference]: Start difference. First operand 15165 states and 56427 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:15,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:15,945 INFO L93 Difference]: Finished difference Result 17763 states and 64869 transitions. [2022-03-03 18:42:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:42:15,946 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:15,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:16,001 INFO L225 Difference]: With dead ends: 17763 [2022-03-03 18:42:16,001 INFO L226 Difference]: Without dead ends: 17647 [2022-03-03 18:42:16,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:16,002 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 105 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:16,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 678 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17647 states. [2022-03-03 18:42:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17647 to 16074. [2022-03-03 18:42:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16074 states, 16073 states have (on average 3.7375101101225656) internal successors, (60073), 16073 states have internal predecessors, (60073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16074 states to 16074 states and 60073 transitions. [2022-03-03 18:42:16,498 INFO L78 Accepts]: Start accepts. Automaton has 16074 states and 60073 transitions. Word has length 27 [2022-03-03 18:42:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:16,498 INFO L470 AbstractCegarLoop]: Abstraction has 16074 states and 60073 transitions. [2022-03-03 18:42:16,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 16074 states and 60073 transitions. [2022-03-03 18:42:16,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:16,528 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:16,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:16,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:16,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-03 18:42:16,729 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:16,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1151333050, now seen corresponding path program 34 times [2022-03-03 18:42:16,730 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:16,730 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370956068] [2022-03-03 18:42:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:16,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:16,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:16,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370956068] [2022-03-03 18:42:16,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370956068] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:16,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486804450] [2022-03-03 18:42:16,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:16,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:16,807 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:16,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 18:42:16,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:16,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:16,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:16,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:17,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:17,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486804450] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:17,142 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:17,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:17,142 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17882039] [2022-03-03 18:42:17,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:17,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:17,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:17,143 INFO L87 Difference]: Start difference. First operand 16074 states and 60073 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:17,406 INFO L93 Difference]: Finished difference Result 16809 states and 62274 transitions. [2022-03-03 18:42:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:17,406 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:17,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:17,451 INFO L225 Difference]: With dead ends: 16809 [2022-03-03 18:42:17,451 INFO L226 Difference]: Without dead ends: 16719 [2022-03-03 18:42:17,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:17,451 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 82 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:17,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 506 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:17,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16719 states. [2022-03-03 18:42:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 16310. [2022-03-03 18:42:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16310 states, 16309 states have (on average 3.7376295297075233) internal successors, (60957), 16309 states have internal predecessors, (60957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16310 states to 16310 states and 60957 transitions. [2022-03-03 18:42:17,828 INFO L78 Accepts]: Start accepts. Automaton has 16310 states and 60957 transitions. Word has length 27 [2022-03-03 18:42:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:17,829 INFO L470 AbstractCegarLoop]: Abstraction has 16310 states and 60957 transitions. [2022-03-03 18:42:17,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 16310 states and 60957 transitions. [2022-03-03 18:42:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:17,858 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:17,858 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:17,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-03 18:42:18,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:18,059 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:18,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:18,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1987580874, now seen corresponding path program 35 times [2022-03-03 18:42:18,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:18,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341251210] [2022-03-03 18:42:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:18,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:18,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:18,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341251210] [2022-03-03 18:42:18,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341251210] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:18,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278456799] [2022-03-03 18:42:18,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:18,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:18,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:18,131 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:18,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 18:42:18,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 18:42:18,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:18,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:18,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:18,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:18,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278456799] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:18,441 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:18,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:18,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277706712] [2022-03-03 18:42:18,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:18,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:18,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:18,442 INFO L87 Difference]: Start difference. First operand 16310 states and 60957 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:18,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:18,693 INFO L93 Difference]: Finished difference Result 17303 states and 63989 transitions. [2022-03-03 18:42:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:18,693 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:18,739 INFO L225 Difference]: With dead ends: 17303 [2022-03-03 18:42:18,739 INFO L226 Difference]: Without dead ends: 17273 [2022-03-03 18:42:18,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:18,739 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 95 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:18,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 553 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17273 states. [2022-03-03 18:42:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17273 to 16496. [2022-03-03 18:42:19,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16496 states, 16495 states have (on average 3.7399818126705062) internal successors, (61691), 16495 states have internal predecessors, (61691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16496 states to 16496 states and 61691 transitions. [2022-03-03 18:42:19,223 INFO L78 Accepts]: Start accepts. Automaton has 16496 states and 61691 transitions. Word has length 27 [2022-03-03 18:42:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:19,223 INFO L470 AbstractCegarLoop]: Abstraction has 16496 states and 61691 transitions. [2022-03-03 18:42:19,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 16496 states and 61691 transitions. [2022-03-03 18:42:19,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:19,261 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:19,261 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:19,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-03 18:42:19,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-03-03 18:42:19,462 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1650438726, now seen corresponding path program 36 times [2022-03-03 18:42:19,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:19,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775115960] [2022-03-03 18:42:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:19,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:19,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:19,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775115960] [2022-03-03 18:42:19,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775115960] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:19,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514337472] [2022-03-03 18:42:19,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:19,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:19,536 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:19,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 18:42:19,560 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:42:19,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:19,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:19,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:19,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:19,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514337472] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:19,924 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:19,924 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:19,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266975986] [2022-03-03 18:42:19,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:19,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:19,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:19,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:19,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:19,925 INFO L87 Difference]: Start difference. First operand 16496 states and 61691 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:20,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:20,146 INFO L93 Difference]: Finished difference Result 17081 states and 63420 transitions. [2022-03-03 18:42:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:20,147 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:20,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:20,196 INFO L225 Difference]: With dead ends: 17081 [2022-03-03 18:42:20,196 INFO L226 Difference]: Without dead ends: 17015 [2022-03-03 18:42:20,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:20,197 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 82 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:20,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 416 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:42:20,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17015 states. [2022-03-03 18:42:20,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17015 to 16690. [2022-03-03 18:42:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16690 states, 16689 states have (on average 3.7389897537300016) internal successors, (62400), 16689 states have internal predecessors, (62400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16690 states to 16690 states and 62400 transitions. [2022-03-03 18:42:20,618 INFO L78 Accepts]: Start accepts. Automaton has 16690 states and 62400 transitions. Word has length 27 [2022-03-03 18:42:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:20,618 INFO L470 AbstractCegarLoop]: Abstraction has 16690 states and 62400 transitions. [2022-03-03 18:42:20,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 16690 states and 62400 transitions. [2022-03-03 18:42:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:20,650 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:20,650 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:20,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-03 18:42:20,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-03 18:42:20,851 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:20,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:20,851 INFO L85 PathProgramCache]: Analyzing trace with hash -314976114, now seen corresponding path program 37 times [2022-03-03 18:42:20,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:20,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176927576] [2022-03-03 18:42:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:20,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:20,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:20,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176927576] [2022-03-03 18:42:20,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176927576] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:20,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323733596] [2022-03-03 18:42:20,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:20,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:20,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:20,919 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:20,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 18:42:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:20,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:20,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:21,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:21,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323733596] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:21,237 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:21,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:21,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174304541] [2022-03-03 18:42:21,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:21,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:21,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:21,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:21,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:21,238 INFO L87 Difference]: Start difference. First operand 16690 states and 62400 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:21,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:21,519 INFO L93 Difference]: Finished difference Result 17364 states and 64430 transitions. [2022-03-03 18:42:21,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:21,520 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:21,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:21,565 INFO L225 Difference]: With dead ends: 17364 [2022-03-03 18:42:21,565 INFO L226 Difference]: Without dead ends: 17298 [2022-03-03 18:42:21,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:21,566 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 69 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:21,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 676 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17298 states. [2022-03-03 18:42:21,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17298 to 16904. [2022-03-03 18:42:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16904 states, 16903 states have (on average 3.7405194344199253) internal successors, (63226), 16903 states have internal predecessors, (63226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16904 states to 16904 states and 63226 transitions. [2022-03-03 18:42:21,963 INFO L78 Accepts]: Start accepts. Automaton has 16904 states and 63226 transitions. Word has length 27 [2022-03-03 18:42:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:21,963 INFO L470 AbstractCegarLoop]: Abstraction has 16904 states and 63226 transitions. [2022-03-03 18:42:21,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 16904 states and 63226 transitions. [2022-03-03 18:42:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:21,993 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:21,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:22,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-03-03 18:42:22,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-03-03 18:42:22,194 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:22,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:22,194 INFO L85 PathProgramCache]: Analyzing trace with hash 152422742, now seen corresponding path program 38 times [2022-03-03 18:42:22,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:22,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244548814] [2022-03-03 18:42:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:22,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:22,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:22,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244548814] [2022-03-03 18:42:22,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244548814] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:22,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791893063] [2022-03-03 18:42:22,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:22,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:22,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:22,264 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:22,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 18:42:22,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:22,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:22,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:22,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:22,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:22,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791893063] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:22,596 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:22,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:22,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354186383] [2022-03-03 18:42:22,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:22,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:22,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:22,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:22,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:22,597 INFO L87 Difference]: Start difference. First operand 16904 states and 63226 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:22,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:22,865 INFO L93 Difference]: Finished difference Result 17887 states and 66224 transitions. [2022-03-03 18:42:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:22,866 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:22,916 INFO L225 Difference]: With dead ends: 17887 [2022-03-03 18:42:22,916 INFO L226 Difference]: Without dead ends: 17857 [2022-03-03 18:42:22,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:22,916 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 90 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:22,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 558 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17857 states. [2022-03-03 18:42:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17857 to 17061. [2022-03-03 18:42:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17061 states, 17060 states have (on average 3.7441383352872215) internal successors, (63875), 17060 states have internal predecessors, (63875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:23,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17061 states to 17061 states and 63875 transitions. [2022-03-03 18:42:23,297 INFO L78 Accepts]: Start accepts. Automaton has 17061 states and 63875 transitions. Word has length 27 [2022-03-03 18:42:23,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:23,298 INFO L470 AbstractCegarLoop]: Abstraction has 17061 states and 63875 transitions. [2022-03-03 18:42:23,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:23,298 INFO L276 IsEmpty]: Start isEmpty. Operand 17061 states and 63875 transitions. [2022-03-03 18:42:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:23,334 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:23,334 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:23,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:23,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-03-03 18:42:23,535 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:23,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1017639438, now seen corresponding path program 39 times [2022-03-03 18:42:23,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:23,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742604905] [2022-03-03 18:42:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:23,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:23,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:23,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742604905] [2022-03-03 18:42:23,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742604905] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:23,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438375059] [2022-03-03 18:42:23,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:23,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:23,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:23,600 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:23,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 18:42:23,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 18:42:23,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:23,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:23,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:23,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:42:23,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438375059] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:23,934 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:23,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:23,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935586683] [2022-03-03 18:42:23,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:23,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:23,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:23,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:23,935 INFO L87 Difference]: Start difference. First operand 17061 states and 63875 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:24,288 INFO L93 Difference]: Finished difference Result 18468 states and 68107 transitions. [2022-03-03 18:42:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:24,288 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:24,346 INFO L225 Difference]: With dead ends: 18468 [2022-03-03 18:42:24,346 INFO L226 Difference]: Without dead ends: 18406 [2022-03-03 18:42:24,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:24,347 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 89 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:24,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 586 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:24,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18406 states. [2022-03-03 18:42:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18406 to 17337. [2022-03-03 18:42:24,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17337 states, 17336 states have (on average 3.749134748500231) internal successors, (64995), 17336 states have internal predecessors, (64995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17337 states to 17337 states and 64995 transitions. [2022-03-03 18:42:24,721 INFO L78 Accepts]: Start accepts. Automaton has 17337 states and 64995 transitions. Word has length 27 [2022-03-03 18:42:24,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:24,721 INFO L470 AbstractCegarLoop]: Abstraction has 17337 states and 64995 transitions. [2022-03-03 18:42:24,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 17337 states and 64995 transitions. [2022-03-03 18:42:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:24,755 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:24,755 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:24,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-03-03 18:42:24,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-03-03 18:42:24,956 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:24,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:24,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2082462406, now seen corresponding path program 40 times [2022-03-03 18:42:24,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:24,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831363521] [2022-03-03 18:42:24,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:24,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:25,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:25,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831363521] [2022-03-03 18:42:25,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831363521] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:25,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661885091] [2022-03-03 18:42:25,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:25,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:25,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:25,026 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:25,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 18:42:25,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:25,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:25,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:25,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:25,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:25,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661885091] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:25,370 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:25,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:25,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452274345] [2022-03-03 18:42:25,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:25,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:25,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:25,371 INFO L87 Difference]: Start difference. First operand 17337 states and 64995 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:25,694 INFO L93 Difference]: Finished difference Result 18221 states and 67611 transitions. [2022-03-03 18:42:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:25,694 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:25,744 INFO L225 Difference]: With dead ends: 18221 [2022-03-03 18:42:25,745 INFO L226 Difference]: Without dead ends: 18191 [2022-03-03 18:42:25,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:25,745 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 90 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:25,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 712 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:25,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18191 states. [2022-03-03 18:42:26,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18191 to 17491. [2022-03-03 18:42:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17491 states, 17490 states have (on average 3.750371640937679) internal successors, (65594), 17490 states have internal predecessors, (65594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17491 states to 17491 states and 65594 transitions. [2022-03-03 18:42:26,237 INFO L78 Accepts]: Start accepts. Automaton has 17491 states and 65594 transitions. Word has length 27 [2022-03-03 18:42:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:26,237 INFO L470 AbstractCegarLoop]: Abstraction has 17491 states and 65594 transitions. [2022-03-03 18:42:26,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:26,237 INFO L276 IsEmpty]: Start isEmpty. Operand 17491 states and 65594 transitions. [2022-03-03 18:42:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:26,268 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:26,268 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:26,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-03 18:42:26,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-03 18:42:26,469 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:26,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:26,469 INFO L85 PathProgramCache]: Analyzing trace with hash -783265718, now seen corresponding path program 41 times [2022-03-03 18:42:26,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:26,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134546209] [2022-03-03 18:42:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:26,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:26,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:26,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134546209] [2022-03-03 18:42:26,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134546209] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:26,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920085834] [2022-03-03 18:42:26,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:26,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:26,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:26,540 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:26,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 18:42:26,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:42:26,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:26,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:26,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:26,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:26,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920085834] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:26,870 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:26,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-03-03 18:42:26,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661891438] [2022-03-03 18:42:26,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:26,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:42:26,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:26,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:42:26,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:26,871 INFO L87 Difference]: Start difference. First operand 17491 states and 65594 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:27,158 INFO L93 Difference]: Finished difference Result 18204 states and 67682 transitions. [2022-03-03 18:42:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:27,159 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:27,206 INFO L225 Difference]: With dead ends: 18204 [2022-03-03 18:42:27,206 INFO L226 Difference]: Without dead ends: 18099 [2022-03-03 18:42:27,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-03 18:42:27,206 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 88 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:27,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 630 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18099 states. [2022-03-03 18:42:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18099 to 17688. [2022-03-03 18:42:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17688 states, 17687 states have (on average 3.748289704302595) internal successors, (66296), 17687 states have internal predecessors, (66296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:27,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 66296 transitions. [2022-03-03 18:42:27,556 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 66296 transitions. Word has length 27 [2022-03-03 18:42:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:27,556 INFO L470 AbstractCegarLoop]: Abstraction has 17688 states and 66296 transitions. [2022-03-03 18:42:27,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:27,556 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 66296 transitions. [2022-03-03 18:42:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:27,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:27,588 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:27,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-03 18:42:27,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-03-03 18:42:27,789 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:27,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:27,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1705053426, now seen corresponding path program 42 times [2022-03-03 18:42:27,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:27,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838328234] [2022-03-03 18:42:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:27,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:27,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:27,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838328234] [2022-03-03 18:42:27,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838328234] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:27,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121957535] [2022-03-03 18:42:27,883 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:27,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:27,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:27,884 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:27,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 18:42:27,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:42:27,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:27,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:27,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:28,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:28,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121957535] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:28,364 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:28,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-03-03 18:42:28,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105587667] [2022-03-03 18:42:28,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:28,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:28,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:28,365 INFO L87 Difference]: Start difference. First operand 17688 states and 66296 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:28,748 INFO L93 Difference]: Finished difference Result 20124 states and 73900 transitions. [2022-03-03 18:42:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:42:28,748 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:28,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:28,806 INFO L225 Difference]: With dead ends: 20124 [2022-03-03 18:42:28,806 INFO L226 Difference]: Without dead ends: 20072 [2022-03-03 18:42:28,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:28,806 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 113 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:28,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 933 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:28,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20072 states. [2022-03-03 18:42:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20072 to 18185. [2022-03-03 18:42:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18185 states, 18184 states have (on average 3.7596238451385835) internal successors, (68365), 18184 states have internal predecessors, (68365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18185 states to 18185 states and 68365 transitions. [2022-03-03 18:42:29,206 INFO L78 Accepts]: Start accepts. Automaton has 18185 states and 68365 transitions. Word has length 27 [2022-03-03 18:42:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:29,206 INFO L470 AbstractCegarLoop]: Abstraction has 18185 states and 68365 transitions. [2022-03-03 18:42:29,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 18185 states and 68365 transitions. [2022-03-03 18:42:29,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:29,239 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:29,239 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:29,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:29,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:29,439 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:29,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:29,440 INFO L85 PathProgramCache]: Analyzing trace with hash 469214414, now seen corresponding path program 43 times [2022-03-03 18:42:29,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:29,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228064750] [2022-03-03 18:42:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:29,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:29,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:29,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228064750] [2022-03-03 18:42:29,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228064750] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:29,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498196497] [2022-03-03 18:42:29,517 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:29,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:29,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:29,518 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:29,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 18:42:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:29,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:29,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:29,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:29,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498196497] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:29,900 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:29,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-03-03 18:42:29,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332750009] [2022-03-03 18:42:29,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:29,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:29,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:29,901 INFO L87 Difference]: Start difference. First operand 18185 states and 68365 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:30,242 INFO L93 Difference]: Finished difference Result 18966 states and 70681 transitions. [2022-03-03 18:42:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:30,243 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:30,294 INFO L225 Difference]: With dead ends: 18966 [2022-03-03 18:42:30,294 INFO L226 Difference]: Without dead ends: 18936 [2022-03-03 18:42:30,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-03 18:42:30,294 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 98 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:30,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 504 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18936 states. [2022-03-03 18:42:30,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18936 to 18308. [2022-03-03 18:42:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18308 states, 18307 states have (on average 3.760692631233954) internal successors, (68847), 18307 states have internal predecessors, (68847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18308 states to 18308 states and 68847 transitions. [2022-03-03 18:42:30,673 INFO L78 Accepts]: Start accepts. Automaton has 18308 states and 68847 transitions. Word has length 27 [2022-03-03 18:42:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:30,674 INFO L470 AbstractCegarLoop]: Abstraction has 18308 states and 68847 transitions. [2022-03-03 18:42:30,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 18308 states and 68847 transitions. [2022-03-03 18:42:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:30,712 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:30,712 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:30,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-03 18:42:30,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-03-03 18:42:30,928 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:30,928 INFO L85 PathProgramCache]: Analyzing trace with hash 475835066, now seen corresponding path program 44 times [2022-03-03 18:42:30,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:30,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674315187] [2022-03-03 18:42:30,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:30,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:31,012 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:31,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674315187] [2022-03-03 18:42:31,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674315187] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:31,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500688458] [2022-03-03 18:42:31,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:31,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:31,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:31,013 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:31,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 18:42:31,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:31,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:31,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:31,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:31,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:31,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500688458] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:31,333 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:31,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-03-03 18:42:31,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665289993] [2022-03-03 18:42:31,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:31,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:31,334 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:31,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:31,334 INFO L87 Difference]: Start difference. First operand 18308 states and 68847 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:31,621 INFO L93 Difference]: Finished difference Result 18865 states and 70515 transitions. [2022-03-03 18:42:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:31,684 INFO L225 Difference]: With dead ends: 18865 [2022-03-03 18:42:31,684 INFO L226 Difference]: Without dead ends: 18797 [2022-03-03 18:42:31,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-03 18:42:31,684 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 67 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:31,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 566 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:31,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18797 states. [2022-03-03 18:42:32,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18797 to 18476. [2022-03-03 18:42:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18476 states, 18475 states have (on average 3.7612449255751015) internal successors, (69489), 18475 states have internal predecessors, (69489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18476 states to 18476 states and 69489 transitions. [2022-03-03 18:42:32,127 INFO L78 Accepts]: Start accepts. Automaton has 18476 states and 69489 transitions. Word has length 27 [2022-03-03 18:42:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:32,127 INFO L470 AbstractCegarLoop]: Abstraction has 18476 states and 69489 transitions. [2022-03-03 18:42:32,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:32,127 INFO L276 IsEmpty]: Start isEmpty. Operand 18476 states and 69489 transitions. [2022-03-03 18:42:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:32,161 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:32,161 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:32,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-03 18:42:32,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:32,362 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:32,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1506518146, now seen corresponding path program 45 times [2022-03-03 18:42:32,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:32,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427061361] [2022-03-03 18:42:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:32,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:32,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:32,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427061361] [2022-03-03 18:42:32,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427061361] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:32,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824979988] [2022-03-03 18:42:32,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:32,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:32,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:32,436 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:32,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 18:42:32,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:42:32,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:32,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:32,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:32,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:32,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824979988] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:32,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:32,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-03-03 18:42:32,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232397420] [2022-03-03 18:42:32,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:32,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 18:42:32,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:32,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 18:42:32,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-03-03 18:42:32,779 INFO L87 Difference]: Start difference. First operand 18476 states and 69489 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:33,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:33,212 INFO L93 Difference]: Finished difference Result 20566 states and 75847 transitions. [2022-03-03 18:42:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:42:33,212 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:33,266 INFO L225 Difference]: With dead ends: 20566 [2022-03-03 18:42:33,266 INFO L226 Difference]: Without dead ends: 20536 [2022-03-03 18:42:33,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-03-03 18:42:33,267 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 103 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:33,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1067 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20536 states. [2022-03-03 18:42:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20536 to 18884. [2022-03-03 18:42:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18884 states, 18883 states have (on average 3.769157443202881) internal successors, (71173), 18883 states have internal predecessors, (71173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18884 states to 18884 states and 71173 transitions. [2022-03-03 18:42:33,784 INFO L78 Accepts]: Start accepts. Automaton has 18884 states and 71173 transitions. Word has length 27 [2022-03-03 18:42:33,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:33,784 INFO L470 AbstractCegarLoop]: Abstraction has 18884 states and 71173 transitions. [2022-03-03 18:42:33,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:33,784 INFO L276 IsEmpty]: Start isEmpty. Operand 18884 states and 71173 transitions. [2022-03-03 18:42:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:33,823 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:33,823 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:33,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:34,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:34,024 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1512496010, now seen corresponding path program 46 times [2022-03-03 18:42:34,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:34,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839988581] [2022-03-03 18:42:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:34,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:34,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839988581] [2022-03-03 18:42:34,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839988581] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:34,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185463463] [2022-03-03 18:42:34,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:34,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:34,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:34,122 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:34,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 18:42:34,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:34,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:34,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:34,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:34,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:34,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185463463] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:34,496 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:34,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-03-03 18:42:34,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956191081] [2022-03-03 18:42:34,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:34,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:34,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:34,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:34,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:34,497 INFO L87 Difference]: Start difference. First operand 18884 states and 71173 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:34,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:34,826 INFO L93 Difference]: Finished difference Result 19698 states and 73472 transitions. [2022-03-03 18:42:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:34,886 INFO L225 Difference]: With dead ends: 19698 [2022-03-03 18:42:34,887 INFO L226 Difference]: Without dead ends: 19642 [2022-03-03 18:42:34,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-03 18:42:34,887 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 99 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:34,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 542 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19642 states. [2022-03-03 18:42:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19642 to 19076. [2022-03-03 18:42:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19076 states, 19075 states have (on average 3.769908256880734) internal successors, (71911), 19075 states have internal predecessors, (71911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19076 states to 19076 states and 71911 transitions. [2022-03-03 18:42:35,469 INFO L78 Accepts]: Start accepts. Automaton has 19076 states and 71911 transitions. Word has length 27 [2022-03-03 18:42:35,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:35,469 INFO L470 AbstractCegarLoop]: Abstraction has 19076 states and 71911 transitions. [2022-03-03 18:42:35,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:35,469 INFO L276 IsEmpty]: Start isEmpty. Operand 19076 states and 71911 transitions. [2022-03-03 18:42:35,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:35,506 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:35,506 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:35,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-03-03 18:42:35,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-03-03 18:42:35,715 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:35,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1415860474, now seen corresponding path program 47 times [2022-03-03 18:42:35,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:35,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31403123] [2022-03-03 18:42:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:35,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:35,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:35,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31403123] [2022-03-03 18:42:35,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31403123] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:35,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265531663] [2022-03-03 18:42:35,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:35,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:35,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:35,789 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:35,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 18:42:35,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:42:35,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:35,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:35,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:36,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 18:42:36,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265531663] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:36,130 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:36,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-03-03 18:42:36,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432545194] [2022-03-03 18:42:36,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:36,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:36,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:36,131 INFO L87 Difference]: Start difference. First operand 19076 states and 71911 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:36,507 INFO L93 Difference]: Finished difference Result 20110 states and 75050 transitions. [2022-03-03 18:42:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:36,507 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:36,559 INFO L225 Difference]: With dead ends: 20110 [2022-03-03 18:42:36,559 INFO L226 Difference]: Without dead ends: 20080 [2022-03-03 18:42:36,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-03 18:42:36,560 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 94 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:36,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 628 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20080 states. [2022-03-03 18:42:36,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20080 to 19275. [2022-03-03 18:42:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19275 states, 19274 states have (on average 3.7716094220193006) internal successors, (72694), 19274 states have internal predecessors, (72694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19275 states to 19275 states and 72694 transitions. [2022-03-03 18:42:36,965 INFO L78 Accepts]: Start accepts. Automaton has 19275 states and 72694 transitions. Word has length 27 [2022-03-03 18:42:36,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:36,965 INFO L470 AbstractCegarLoop]: Abstraction has 19275 states and 72694 transitions. [2022-03-03 18:42:36,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 19275 states and 72694 transitions. [2022-03-03 18:42:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:37,005 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:37,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:37,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:37,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-03-03 18:42:37,206 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:37,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1723053450, now seen corresponding path program 48 times [2022-03-03 18:42:37,206 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:37,206 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909423430] [2022-03-03 18:42:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:37,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:37,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:37,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909423430] [2022-03-03 18:42:37,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909423430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:37,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970440463] [2022-03-03 18:42:37,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:37,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:37,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:37,311 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:37,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 18:42:37,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:42:37,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:37,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:37,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:37,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 18:42:37,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970440463] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:37,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:37,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-03-03 18:42:37,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936581350] [2022-03-03 18:42:37,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:37,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:37,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:37,629 INFO L87 Difference]: Start difference. First operand 19275 states and 72694 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:38,141 INFO L93 Difference]: Finished difference Result 20326 states and 75853 transitions. [2022-03-03 18:42:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:38,142 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:38,206 INFO L225 Difference]: With dead ends: 20326 [2022-03-03 18:42:38,206 INFO L226 Difference]: Without dead ends: 20231 [2022-03-03 18:42:38,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-03 18:42:38,207 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 96 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:38,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 599 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:42:38,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20231 states. [2022-03-03 18:42:38,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20231 to 19566. [2022-03-03 18:42:38,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19566 states, 19565 states have (on average 3.773115256836187) internal successors, (73821), 19565 states have internal predecessors, (73821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19566 states to 19566 states and 73821 transitions. [2022-03-03 18:42:38,631 INFO L78 Accepts]: Start accepts. Automaton has 19566 states and 73821 transitions. Word has length 27 [2022-03-03 18:42:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:38,631 INFO L470 AbstractCegarLoop]: Abstraction has 19566 states and 73821 transitions. [2022-03-03 18:42:38,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 19566 states and 73821 transitions. [2022-03-03 18:42:38,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:38,668 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:38,668 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:38,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:38,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-03-03 18:42:38,868 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:38,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:38,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1507328886, now seen corresponding path program 49 times [2022-03-03 18:42:38,869 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:38,869 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733117294] [2022-03-03 18:42:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:38,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:38,965 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:38,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733117294] [2022-03-03 18:42:38,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733117294] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:38,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498367557] [2022-03-03 18:42:38,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:38,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:38,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:38,966 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:38,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 18:42:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:39,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:39,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:39,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:39,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498367557] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:39,345 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:39,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2022-03-03 18:42:39,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091529134] [2022-03-03 18:42:39,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:39,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 18:42:39,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:39,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 18:42:39,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-03-03 18:42:39,346 INFO L87 Difference]: Start difference. First operand 19566 states and 73821 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:39,686 INFO L93 Difference]: Finished difference Result 21303 states and 79083 transitions. [2022-03-03 18:42:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:42:39,686 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:39,865 INFO L225 Difference]: With dead ends: 21303 [2022-03-03 18:42:39,866 INFO L226 Difference]: Without dead ends: 21255 [2022-03-03 18:42:39,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:42:39,866 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 112 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:39,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 672 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:39,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21255 states. [2022-03-03 18:42:40,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21255 to 19994. [2022-03-03 18:42:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19994 states, 19993 states have (on average 3.77492122242785) internal successors, (75472), 19993 states have internal predecessors, (75472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19994 states to 19994 states and 75472 transitions. [2022-03-03 18:42:40,315 INFO L78 Accepts]: Start accepts. Automaton has 19994 states and 75472 transitions. Word has length 27 [2022-03-03 18:42:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:40,315 INFO L470 AbstractCegarLoop]: Abstraction has 19994 states and 75472 transitions. [2022-03-03 18:42:40,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 19994 states and 75472 transitions. [2022-03-03 18:42:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:40,350 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:40,350 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:40,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:40,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-03 18:42:40,554 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:40,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:40,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1829336258, now seen corresponding path program 50 times [2022-03-03 18:42:40,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:40,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384939255] [2022-03-03 18:42:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:40,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:40,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:40,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384939255] [2022-03-03 18:42:40,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384939255] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:40,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818740795] [2022-03-03 18:42:40,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:40,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:40,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:40,654 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:40,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 18:42:40,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:40,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:40,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:40,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:40,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:41,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818740795] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:41,035 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:41,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 16 [2022-03-03 18:42:41,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125422192] [2022-03-03 18:42:41,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:41,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 18:42:41,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:41,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 18:42:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-03-03 18:42:41,036 INFO L87 Difference]: Start difference. First operand 19994 states and 75472 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:41,366 INFO L93 Difference]: Finished difference Result 21008 states and 78520 transitions. [2022-03-03 18:42:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:41,366 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:41,424 INFO L225 Difference]: With dead ends: 21008 [2022-03-03 18:42:41,425 INFO L226 Difference]: Without dead ends: 20978 [2022-03-03 18:42:41,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:42:41,425 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 108 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:41,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 464 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20978 states. [2022-03-03 18:42:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20978 to 20240. [2022-03-03 18:42:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20240 states, 20239 states have (on average 3.7752853401847917) internal successors, (76408), 20239 states have internal predecessors, (76408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20240 states to 20240 states and 76408 transitions. [2022-03-03 18:42:41,920 INFO L78 Accepts]: Start accepts. Automaton has 20240 states and 76408 transitions. Word has length 27 [2022-03-03 18:42:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:41,920 INFO L470 AbstractCegarLoop]: Abstraction has 20240 states and 76408 transitions. [2022-03-03 18:42:41,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:41,921 INFO L276 IsEmpty]: Start isEmpty. Operand 20240 states and 76408 transitions. [2022-03-03 18:42:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:41,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:41,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:41,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-03-03 18:42:42,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-03 18:42:42,158 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1559770698, now seen corresponding path program 51 times [2022-03-03 18:42:42,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:42,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264359909] [2022-03-03 18:42:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:42,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:42,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:42,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264359909] [2022-03-03 18:42:42,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264359909] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:42,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304534334] [2022-03-03 18:42:42,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:42,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:42,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:42,245 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:42,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 18:42:42,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:42:42,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:42,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:42,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:42,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:42,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304534334] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:42,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:42,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2022-03-03 18:42:42,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937975674] [2022-03-03 18:42:42,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:42,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 18:42:42,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:42,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 18:42:42,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-03-03 18:42:42,615 INFO L87 Difference]: Start difference. First operand 20240 states and 76408 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:43,006 INFO L93 Difference]: Finished difference Result 21252 states and 79458 transitions. [2022-03-03 18:42:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:43,006 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:43,074 INFO L225 Difference]: With dead ends: 21252 [2022-03-03 18:42:43,074 INFO L226 Difference]: Without dead ends: 21222 [2022-03-03 18:42:43,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:42:43,074 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 97 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:43,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 598 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21222 states. [2022-03-03 18:42:43,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21222 to 20470. [2022-03-03 18:42:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20470 states, 20469 states have (on average 3.775660755288485) internal successors, (77284), 20469 states have internal predecessors, (77284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20470 states to 20470 states and 77284 transitions. [2022-03-03 18:42:43,622 INFO L78 Accepts]: Start accepts. Automaton has 20470 states and 77284 transitions. Word has length 27 [2022-03-03 18:42:43,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:43,622 INFO L470 AbstractCegarLoop]: Abstraction has 20470 states and 77284 transitions. [2022-03-03 18:42:43,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 20470 states and 77284 transitions. [2022-03-03 18:42:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:43,664 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:43,665 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:43,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-03-03 18:42:43,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:43,865 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:43,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:43,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1365087366, now seen corresponding path program 52 times [2022-03-03 18:42:43,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:43,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193334931] [2022-03-03 18:42:43,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:43,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:43,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:43,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193334931] [2022-03-03 18:42:43,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193334931] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:43,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456333235] [2022-03-03 18:42:43,948 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:43,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:43,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:43,949 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:43,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 18:42:43,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:43,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:43,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:43,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:44,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:44,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456333235] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:44,290 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:44,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2022-03-03 18:42:44,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649316358] [2022-03-03 18:42:44,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:44,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 18:42:44,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:44,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 18:42:44,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-03-03 18:42:44,291 INFO L87 Difference]: Start difference. First operand 20470 states and 77284 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:44,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:44,645 INFO L93 Difference]: Finished difference Result 21101 states and 79088 transitions. [2022-03-03 18:42:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:44,645 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:44,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:44,715 INFO L225 Difference]: With dead ends: 21101 [2022-03-03 18:42:44,715 INFO L226 Difference]: Without dead ends: 21003 [2022-03-03 18:42:44,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:42:44,716 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 90 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:44,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 548 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:44,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21003 states. [2022-03-03 18:42:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21003 to 20668. [2022-03-03 18:42:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20668 states, 20667 states have (on average 3.772245608941791) internal successors, (77961), 20667 states have internal predecessors, (77961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:45,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20668 states to 20668 states and 77961 transitions. [2022-03-03 18:42:45,162 INFO L78 Accepts]: Start accepts. Automaton has 20668 states and 77961 transitions. Word has length 27 [2022-03-03 18:42:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:45,162 INFO L470 AbstractCegarLoop]: Abstraction has 20668 states and 77961 transitions. [2022-03-03 18:42:45,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 20668 states and 77961 transitions. [2022-03-03 18:42:45,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:45,338 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:45,338 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:45,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-03-03 18:42:45,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:45,539 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:45,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash -564336006, now seen corresponding path program 53 times [2022-03-03 18:42:45,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:45,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025583934] [2022-03-03 18:42:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:45,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:45,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025583934] [2022-03-03 18:42:45,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025583934] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:45,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149899574] [2022-03-03 18:42:45,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:45,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:45,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:45,633 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:45,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 18:42:45,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 18:42:45,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:45,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:45,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:45,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:46,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149899574] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:46,029 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:46,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-03-03 18:42:46,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824485311] [2022-03-03 18:42:46,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:46,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:42:46,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:46,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:42:46,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:42:46,030 INFO L87 Difference]: Start difference. First operand 20668 states and 77961 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:46,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:46,536 INFO L93 Difference]: Finished difference Result 22401 states and 83279 transitions. [2022-03-03 18:42:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:42:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:46,598 INFO L225 Difference]: With dead ends: 22401 [2022-03-03 18:42:46,598 INFO L226 Difference]: Without dead ends: 22360 [2022-03-03 18:42:46,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:46,599 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 119 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:46,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 944 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22360 states. [2022-03-03 18:42:47,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22360 to 21222. [2022-03-03 18:42:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21222 states, 21221 states have (on average 3.7722538994392347) internal successors, (80051), 21221 states have internal predecessors, (80051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21222 states to 21222 states and 80051 transitions. [2022-03-03 18:42:47,198 INFO L78 Accepts]: Start accepts. Automaton has 21222 states and 80051 transitions. Word has length 27 [2022-03-03 18:42:47,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:47,198 INFO L470 AbstractCegarLoop]: Abstraction has 21222 states and 80051 transitions. [2022-03-03 18:42:47,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand 21222 states and 80051 transitions. [2022-03-03 18:42:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:47,238 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:47,238 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:47,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-03-03 18:42:47,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:47,440 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash -543379962, now seen corresponding path program 54 times [2022-03-03 18:42:47,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:47,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956013164] [2022-03-03 18:42:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:47,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:47,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:47,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956013164] [2022-03-03 18:42:47,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956013164] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:47,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639201035] [2022-03-03 18:42:47,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:47,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:47,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:47,522 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:47,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-03 18:42:47,544 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:42:47,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:47,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:47,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:47,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 18:42:47,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639201035] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:47,864 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:47,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 16 [2022-03-03 18:42:47,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946225423] [2022-03-03 18:42:47,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:47,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 18:42:47,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 18:42:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-03-03 18:42:47,865 INFO L87 Difference]: Start difference. First operand 21222 states and 80051 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:48,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:48,229 INFO L93 Difference]: Finished difference Result 22034 states and 82438 transitions. [2022-03-03 18:42:48,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:48,229 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:48,291 INFO L225 Difference]: With dead ends: 22034 [2022-03-03 18:42:48,292 INFO L226 Difference]: Without dead ends: 21972 [2022-03-03 18:42:48,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:42:48,292 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 84 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:48,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 625 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21972 states. [2022-03-03 18:42:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21972 to 21408. [2022-03-03 18:42:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21408 states, 21407 states have (on average 3.7745130097631616) internal successors, (80801), 21407 states have internal predecessors, (80801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21408 states to 21408 states and 80801 transitions. [2022-03-03 18:42:48,808 INFO L78 Accepts]: Start accepts. Automaton has 21408 states and 80801 transitions. Word has length 27 [2022-03-03 18:42:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:48,808 INFO L470 AbstractCegarLoop]: Abstraction has 21408 states and 80801 transitions. [2022-03-03 18:42:48,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 21408 states and 80801 transitions. [2022-03-03 18:42:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:48,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:48,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:48,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:49,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:49,047 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:49,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash 904745286, now seen corresponding path program 55 times [2022-03-03 18:42:49,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:49,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9023770] [2022-03-03 18:42:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:49,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:49,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:49,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9023770] [2022-03-03 18:42:49,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9023770] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:49,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399048137] [2022-03-03 18:42:49,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:49,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:49,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:49,143 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:49,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-03 18:42:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:49,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:49,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:49,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:49,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399048137] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:49,514 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:49,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2022-03-03 18:42:49,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839599447] [2022-03-03 18:42:49,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:49,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 18:42:49,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:49,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 18:42:49,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-03-03 18:42:49,515 INFO L87 Difference]: Start difference. First operand 21408 states and 80801 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:49,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:49,879 INFO L93 Difference]: Finished difference Result 21975 states and 82472 transitions. [2022-03-03 18:42:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:49,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:49,944 INFO L225 Difference]: With dead ends: 21975 [2022-03-03 18:42:49,944 INFO L226 Difference]: Without dead ends: 21907 [2022-03-03 18:42:49,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:42:49,945 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 74 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:49,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 606 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:49,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21907 states. [2022-03-03 18:42:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21907 to 21570. [2022-03-03 18:42:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21570 states, 21569 states have (on average 3.7743984422087253) internal successors, (81410), 21569 states have internal predecessors, (81410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21570 states to 21570 states and 81410 transitions. [2022-03-03 18:42:50,504 INFO L78 Accepts]: Start accepts. Automaton has 21570 states and 81410 transitions. Word has length 27 [2022-03-03 18:42:50,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:50,504 INFO L470 AbstractCegarLoop]: Abstraction has 21570 states and 81410 transitions. [2022-03-03 18:42:50,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:50,505 INFO L276 IsEmpty]: Start isEmpty. Operand 21570 states and 81410 transitions. [2022-03-03 18:42:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:50,545 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:50,545 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:50,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-03-03 18:42:50,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-03-03 18:42:50,746 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:50,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash 392023814, now seen corresponding path program 56 times [2022-03-03 18:42:50,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:50,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965295635] [2022-03-03 18:42:50,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:50,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:50,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:50,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965295635] [2022-03-03 18:42:50,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965295635] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:50,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121495255] [2022-03-03 18:42:50,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:50,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:50,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:50,832 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:50,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-03 18:42:50,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:50,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:50,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:50,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:51,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:51,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121495255] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:51,226 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:51,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-03-03 18:42:51,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937423036] [2022-03-03 18:42:51,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:51,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:42:51,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:51,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:42:51,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:42:51,226 INFO L87 Difference]: Start difference. First operand 21570 states and 81410 transitions. Second operand has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:51,902 INFO L93 Difference]: Finished difference Result 24163 states and 89788 transitions. [2022-03-03 18:42:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:42:51,902 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:51,990 INFO L225 Difference]: With dead ends: 24163 [2022-03-03 18:42:51,990 INFO L226 Difference]: Without dead ends: 24098 [2022-03-03 18:42:51,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:42:51,990 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 115 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:51,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1022 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:42:52,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24098 states. [2022-03-03 18:42:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24098 to 22358. [2022-03-03 18:42:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22358 states, 22357 states have (on average 3.7849443127432125) internal successors, (84620), 22357 states have internal predecessors, (84620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22358 states to 22358 states and 84620 transitions. [2022-03-03 18:42:52,558 INFO L78 Accepts]: Start accepts. Automaton has 22358 states and 84620 transitions. Word has length 27 [2022-03-03 18:42:52,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:52,558 INFO L470 AbstractCegarLoop]: Abstraction has 22358 states and 84620 transitions. [2022-03-03 18:42:52,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand 22358 states and 84620 transitions. [2022-03-03 18:42:52,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:52,600 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:52,600 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:52,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-03-03 18:42:52,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-03 18:42:52,801 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1720511174, now seen corresponding path program 57 times [2022-03-03 18:42:52,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:52,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501679796] [2022-03-03 18:42:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:52,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:52,886 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:52,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501679796] [2022-03-03 18:42:52,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501679796] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:52,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519559697] [2022-03-03 18:42:52,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:52,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:52,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:52,888 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:52,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-03 18:42:52,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:42:52,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:52,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:52,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:53,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:42:53,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519559697] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:53,242 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:53,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 18 [2022-03-03 18:42:53,242 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463837213] [2022-03-03 18:42:53,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:53,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:42:53,242 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:42:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:42:53,243 INFO L87 Difference]: Start difference. First operand 22358 states and 84620 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:53,800 INFO L93 Difference]: Finished difference Result 23198 states and 87112 transitions. [2022-03-03 18:42:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:53,801 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:53,862 INFO L225 Difference]: With dead ends: 23198 [2022-03-03 18:42:53,862 INFO L226 Difference]: Without dead ends: 23168 [2022-03-03 18:42:53,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-03-03 18:42:53,863 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:53,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 669 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23168 states. [2022-03-03 18:42:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23168 to 22488. [2022-03-03 18:42:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22488 states, 22487 states have (on average 3.785698403522035) internal successors, (85129), 22487 states have internal predecessors, (85129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22488 states to 22488 states and 85129 transitions. [2022-03-03 18:42:54,473 INFO L78 Accepts]: Start accepts. Automaton has 22488 states and 85129 transitions. Word has length 27 [2022-03-03 18:42:54,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:54,473 INFO L470 AbstractCegarLoop]: Abstraction has 22488 states and 85129 transitions. [2022-03-03 18:42:54,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22488 states and 85129 transitions. [2022-03-03 18:42:54,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:54,516 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:54,516 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:54,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-03-03 18:42:54,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-03-03 18:42:54,716 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:54,716 INFO L85 PathProgramCache]: Analyzing trace with hash 974893574, now seen corresponding path program 58 times [2022-03-03 18:42:54,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:54,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314821960] [2022-03-03 18:42:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:54,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:54,788 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:54,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314821960] [2022-03-03 18:42:54,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314821960] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:54,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290333942] [2022-03-03 18:42:54,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:54,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:54,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:54,790 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:54,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-03 18:42:54,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:54,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:54,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:54,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:55,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:42:55,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290333942] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:55,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:55,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-03-03 18:42:55,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496263078] [2022-03-03 18:42:55,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:55,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 18:42:55,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:55,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 18:42:55,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-03-03 18:42:55,121 INFO L87 Difference]: Start difference. First operand 22488 states and 85129 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:55,711 INFO L93 Difference]: Finished difference Result 24712 states and 92130 transitions. [2022-03-03 18:42:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:42:55,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:55,784 INFO L225 Difference]: With dead ends: 24712 [2022-03-03 18:42:55,785 INFO L226 Difference]: Without dead ends: 24678 [2022-03-03 18:42:55,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:42:55,785 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 108 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:55,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 892 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24678 states. [2022-03-03 18:42:56,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24678 to 23061. [2022-03-03 18:42:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23061 states, 23060 states have (on average 3.7935819601040763) internal successors, (87480), 23060 states have internal predecessors, (87480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:56,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23061 states to 23061 states and 87480 transitions. [2022-03-03 18:42:56,387 INFO L78 Accepts]: Start accepts. Automaton has 23061 states and 87480 transitions. Word has length 27 [2022-03-03 18:42:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:56,387 INFO L470 AbstractCegarLoop]: Abstraction has 23061 states and 87480 transitions. [2022-03-03 18:42:56,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:56,387 INFO L276 IsEmpty]: Start isEmpty. Operand 23061 states and 87480 transitions. [2022-03-03 18:42:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:56,435 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:56,435 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:56,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-03-03 18:42:56,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:56,635 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:56,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:56,636 INFO L85 PathProgramCache]: Analyzing trace with hash 612630986, now seen corresponding path program 59 times [2022-03-03 18:42:56,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:56,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429462465] [2022-03-03 18:42:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:56,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:56,711 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:56,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429462465] [2022-03-03 18:42:56,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429462465] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:56,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449177259] [2022-03-03 18:42:56,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:56,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:56,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:56,712 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:56,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-03 18:42:56,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:42:56,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:56,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:56,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:56,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:57,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449177259] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:57,025 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:57,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-03-03 18:42:57,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247551618] [2022-03-03 18:42:57,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:57,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:57,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:57,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:57,026 INFO L87 Difference]: Start difference. First operand 23061 states and 87480 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:57,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:57,488 INFO L93 Difference]: Finished difference Result 23923 states and 90023 transitions. [2022-03-03 18:42:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:57,488 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:57,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:57,582 INFO L225 Difference]: With dead ends: 23923 [2022-03-03 18:42:57,582 INFO L226 Difference]: Without dead ends: 23893 [2022-03-03 18:42:57,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-03 18:42:57,582 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 110 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:57,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 529 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23893 states. [2022-03-03 18:42:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23893 to 23171. [2022-03-03 18:42:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23171 states, 23170 states have (on average 3.795338800172637) internal successors, (87938), 23170 states have internal predecessors, (87938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23171 states to 23171 states and 87938 transitions. [2022-03-03 18:42:58,225 INFO L78 Accepts]: Start accepts. Automaton has 23171 states and 87938 transitions. Word has length 27 [2022-03-03 18:42:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:58,225 INFO L470 AbstractCegarLoop]: Abstraction has 23171 states and 87938 transitions. [2022-03-03 18:42:58,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 23171 states and 87938 transitions. [2022-03-03 18:42:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:42:58,270 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:58,270 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:58,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-03-03 18:42:58,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:58,475 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:42:58,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1406917254, now seen corresponding path program 60 times [2022-03-03 18:42:58,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:58,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231466093] [2022-03-03 18:42:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:58,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:58,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:58,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231466093] [2022-03-03 18:42:58,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231466093] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:58,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198399379] [2022-03-03 18:42:58,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:58,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:58,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:58,567 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:42:58,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-03 18:42:58,590 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:42:58,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:58,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:42:58,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:58,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:42:59,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198399379] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:59,007 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:59,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-03-03 18:42:59,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272478180] [2022-03-03 18:42:59,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:59,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:42:59,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:59,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:42:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:42:59,008 INFO L87 Difference]: Start difference. First operand 23171 states and 87938 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:59,381 INFO L93 Difference]: Finished difference Result 23779 states and 89642 transitions. [2022-03-03 18:42:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:42:59,381 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:42:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:59,453 INFO L225 Difference]: With dead ends: 23779 [2022-03-03 18:42:59,453 INFO L226 Difference]: Without dead ends: 23729 [2022-03-03 18:42:59,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-03 18:42:59,454 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 100 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:59,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 489 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23729 states. [2022-03-03 18:42:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23729 to 23331. [2022-03-03 18:42:59,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23331 states, 23330 states have (on average 3.794513501928847) internal successors, (88526), 23330 states have internal predecessors, (88526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23331 states to 23331 states and 88526 transitions. [2022-03-03 18:43:00,038 INFO L78 Accepts]: Start accepts. Automaton has 23331 states and 88526 transitions. Word has length 27 [2022-03-03 18:43:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:00,038 INFO L470 AbstractCegarLoop]: Abstraction has 23331 states and 88526 transitions. [2022-03-03 18:43:00,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 23331 states and 88526 transitions. [2022-03-03 18:43:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:43:00,082 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:00,082 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:00,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-03-03 18:43:00,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-03 18:43:00,283 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash 798928522, now seen corresponding path program 61 times [2022-03-03 18:43:00,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:00,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928579545] [2022-03-03 18:43:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:00,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:00,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:00,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928579545] [2022-03-03 18:43:00,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928579545] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:00,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830430330] [2022-03-03 18:43:00,360 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:43:00,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:00,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:00,361 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:00,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-03 18:43:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:00,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:43:00,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:00,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:43:00,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830430330] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:00,714 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:00,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-03-03 18:43:00,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109463863] [2022-03-03 18:43:00,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:00,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:43:00,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:00,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:43:00,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:43:00,715 INFO L87 Difference]: Start difference. First operand 23331 states and 88526 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:01,221 INFO L93 Difference]: Finished difference Result 25647 states and 95754 transitions. [2022-03-03 18:43:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:43:01,222 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:43:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:01,302 INFO L225 Difference]: With dead ends: 25647 [2022-03-03 18:43:01,302 INFO L226 Difference]: Without dead ends: 25595 [2022-03-03 18:43:01,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:43:01,303 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 115 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:01,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 766 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:43:01,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25595 states. [2022-03-03 18:43:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25595 to 23873. [2022-03-03 18:43:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23873 states, 23872 states have (on average 3.8009383378016084) internal successors, (90736), 23872 states have internal predecessors, (90736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23873 states to 23873 states and 90736 transitions. [2022-03-03 18:43:02,004 INFO L78 Accepts]: Start accepts. Automaton has 23873 states and 90736 transitions. Word has length 27 [2022-03-03 18:43:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:02,004 INFO L470 AbstractCegarLoop]: Abstraction has 23873 states and 90736 transitions. [2022-03-03 18:43:02,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 23873 states and 90736 transitions. [2022-03-03 18:43:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:43:02,055 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:02,055 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:02,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-03 18:43:02,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:02,255 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:02,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:02,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1773933906, now seen corresponding path program 62 times [2022-03-03 18:43:02,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:02,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077266207] [2022-03-03 18:43:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:02,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:02,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:02,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077266207] [2022-03-03 18:43:02,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077266207] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:02,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732437064] [2022-03-03 18:43:02,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:43:02,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:02,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:02,368 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:02,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-03 18:43:02,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:43:02,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:02,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:43:02,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:02,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:02,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732437064] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:02,884 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:02,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 18 [2022-03-03 18:43:02,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254517401] [2022-03-03 18:43:02,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:02,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:43:02,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:02,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:43:02,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:43:02,885 INFO L87 Difference]: Start difference. First operand 23873 states and 90736 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:03,327 INFO L93 Difference]: Finished difference Result 24766 states and 93367 transitions. [2022-03-03 18:43:03,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:43:03,327 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:43:03,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:03,404 INFO L225 Difference]: With dead ends: 24766 [2022-03-03 18:43:03,404 INFO L226 Difference]: Without dead ends: 24736 [2022-03-03 18:43:03,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-03-03 18:43:03,404 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 108 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:03,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 596 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:43:03,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24736 states. [2022-03-03 18:43:03,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24736 to 23990. [2022-03-03 18:43:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23990 states, 23989 states have (on average 3.802742923840093) internal successors, (91224), 23989 states have internal predecessors, (91224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23990 states to 23990 states and 91224 transitions. [2022-03-03 18:43:03,995 INFO L78 Accepts]: Start accepts. Automaton has 23990 states and 91224 transitions. Word has length 27 [2022-03-03 18:43:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:03,995 INFO L470 AbstractCegarLoop]: Abstraction has 23990 states and 91224 transitions. [2022-03-03 18:43:03,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 23990 states and 91224 transitions. [2022-03-03 18:43:04,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:43:04,044 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:04,044 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:04,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-03-03 18:43:04,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:04,244 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:04,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1614694410, now seen corresponding path program 63 times [2022-03-03 18:43:04,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:04,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527363285] [2022-03-03 18:43:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:04,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:04,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:04,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527363285] [2022-03-03 18:43:04,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527363285] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:04,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017437527] [2022-03-03 18:43:04,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:43:04,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:04,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:04,323 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:04,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-03 18:43:04,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:43:04,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:04,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:43:04,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:04,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:04,693 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:43:04,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017437527] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:04,694 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:04,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 18 [2022-03-03 18:43:04,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239107788] [2022-03-03 18:43:04,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:04,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:43:04,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:04,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:43:04,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:43:04,694 INFO L87 Difference]: Start difference. First operand 23990 states and 91224 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:05,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:05,245 INFO L93 Difference]: Finished difference Result 25122 states and 94481 transitions. [2022-03-03 18:43:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:43:05,246 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:43:05,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:05,323 INFO L225 Difference]: With dead ends: 25122 [2022-03-03 18:43:05,323 INFO L226 Difference]: Without dead ends: 25084 [2022-03-03 18:43:05,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-03-03 18:43:05,324 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 115 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:05,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 681 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:43:05,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25084 states. [2022-03-03 18:43:05,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25084 to 24200. [2022-03-03 18:43:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24200 states, 24199 states have (on average 3.803297656927972) internal successors, (92036), 24199 states have internal predecessors, (92036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24200 states to 24200 states and 92036 transitions. [2022-03-03 18:43:05,985 INFO L78 Accepts]: Start accepts. Automaton has 24200 states and 92036 transitions. Word has length 27 [2022-03-03 18:43:05,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:05,985 INFO L470 AbstractCegarLoop]: Abstraction has 24200 states and 92036 transitions. [2022-03-03 18:43:05,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:05,986 INFO L276 IsEmpty]: Start isEmpty. Operand 24200 states and 92036 transitions. [2022-03-03 18:43:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:43:06,039 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:06,039 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:06,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-03-03 18:43:06,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-03-03 18:43:06,240 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1613186170, now seen corresponding path program 64 times [2022-03-03 18:43:06,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:06,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015547591] [2022-03-03 18:43:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:06,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:06,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:06,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015547591] [2022-03-03 18:43:06,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015547591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:06,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086279588] [2022-03-03 18:43:06,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:43:06,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:06,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:06,322 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:06,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-03 18:43:06,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:43:06,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:06,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:43:06,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:06,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:06,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086279588] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:06,682 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:06,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2022-03-03 18:43:06,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060333355] [2022-03-03 18:43:06,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:06,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 18:43:06,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:06,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 18:43:06,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-03-03 18:43:06,683 INFO L87 Difference]: Start difference. First operand 24200 states and 92036 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:07,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:07,260 INFO L93 Difference]: Finished difference Result 26053 states and 97640 transitions. [2022-03-03 18:43:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:43:07,261 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:43:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:07,340 INFO L225 Difference]: With dead ends: 26053 [2022-03-03 18:43:07,340 INFO L226 Difference]: Without dead ends: 25996 [2022-03-03 18:43:07,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:43:07,340 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 139 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:07,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 746 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:43:07,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25996 states. [2022-03-03 18:43:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25996 to 24705. [2022-03-03 18:43:07,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24705 states, 24704 states have (on average 3.803958873056995) internal successors, (93973), 24704 states have internal predecessors, (93973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24705 states to 24705 states and 93973 transitions. [2022-03-03 18:43:07,989 INFO L78 Accepts]: Start accepts. Automaton has 24705 states and 93973 transitions. Word has length 27 [2022-03-03 18:43:07,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:07,989 INFO L470 AbstractCegarLoop]: Abstraction has 24705 states and 93973 transitions. [2022-03-03 18:43:07,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:07,989 INFO L276 IsEmpty]: Start isEmpty. Operand 24705 states and 93973 transitions. [2022-03-03 18:43:08,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:43:08,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:08,043 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:08,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-03-03 18:43:08,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:08,244 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:08,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1105734706, now seen corresponding path program 65 times [2022-03-03 18:43:08,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:08,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426971599] [2022-03-03 18:43:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:08,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:08,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:08,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426971599] [2022-03-03 18:43:08,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426971599] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:08,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448306825] [2022-03-03 18:43:08,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:43:08,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:08,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:08,331 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:08,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-03 18:43:08,352 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:43:08,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:08,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:43:08,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:08,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:43:08,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448306825] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:08,685 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:08,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 16 [2022-03-03 18:43:08,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161222000] [2022-03-03 18:43:08,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:08,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 18:43:08,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:08,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 18:43:08,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-03-03 18:43:08,686 INFO L87 Difference]: Start difference. First operand 24705 states and 93973 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:09,254 INFO L93 Difference]: Finished difference Result 25797 states and 97262 transitions. [2022-03-03 18:43:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:43:09,254 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:43:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:09,338 INFO L225 Difference]: With dead ends: 25797 [2022-03-03 18:43:09,338 INFO L226 Difference]: Without dead ends: 25767 [2022-03-03 18:43:09,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:43:09,339 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 108 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:09,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 570 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:43:09,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25767 states. [2022-03-03 18:43:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25767 to 24956. [2022-03-03 18:43:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24956 states, 24955 states have (on average 3.8041274293728713) internal successors, (94932), 24955 states have internal predecessors, (94932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24956 states to 24956 states and 94932 transitions. [2022-03-03 18:43:10,063 INFO L78 Accepts]: Start accepts. Automaton has 24956 states and 94932 transitions. Word has length 27 [2022-03-03 18:43:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:10,063 INFO L470 AbstractCegarLoop]: Abstraction has 24956 states and 94932 transitions. [2022-03-03 18:43:10,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 24956 states and 94932 transitions. [2022-03-03 18:43:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:43:10,120 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:10,120 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:10,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:10,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-03-03 18:43:10,321 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash -542120122, now seen corresponding path program 66 times [2022-03-03 18:43:10,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:10,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076158606] [2022-03-03 18:43:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:10,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:10,409 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:10,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076158606] [2022-03-03 18:43:10,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076158606] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:10,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109775359] [2022-03-03 18:43:10,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:43:10,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:10,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:10,411 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:10,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-03 18:43:10,431 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:43:10,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:10,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:43:10,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:10,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:10,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109775359] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:10,802 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:10,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2022-03-03 18:43:10,802 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204444604] [2022-03-03 18:43:10,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:10,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 18:43:10,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 18:43:10,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-03-03 18:43:10,803 INFO L87 Difference]: Start difference. First operand 24956 states and 94932 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:11,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:11,425 INFO L93 Difference]: Finished difference Result 26051 states and 98233 transitions. [2022-03-03 18:43:11,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:43:11,425 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:43:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:11,512 INFO L225 Difference]: With dead ends: 26051 [2022-03-03 18:43:11,512 INFO L226 Difference]: Without dead ends: 26021 [2022-03-03 18:43:11,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:43:11,513 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 120 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:11,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 576 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:43:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26021 states. [2022-03-03 18:43:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26021 to 25256. [2022-03-03 18:43:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25256 states, 25255 states have (on average 3.8028905167293607) internal successors, (96042), 25255 states have internal predecessors, (96042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25256 states to 25256 states and 96042 transitions. [2022-03-03 18:43:12,150 INFO L78 Accepts]: Start accepts. Automaton has 25256 states and 96042 transitions. Word has length 27 [2022-03-03 18:43:12,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:12,150 INFO L470 AbstractCegarLoop]: Abstraction has 25256 states and 96042 transitions. [2022-03-03 18:43:12,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 25256 states and 96042 transitions. [2022-03-03 18:43:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:43:12,204 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:12,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:12,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-03-03 18:43:12,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-03-03 18:43:12,404 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:12,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1463907830, now seen corresponding path program 67 times [2022-03-03 18:43:12,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:12,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797060487] [2022-03-03 18:43:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:12,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:12,487 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:12,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797060487] [2022-03-03 18:43:12,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797060487] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:12,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183035686] [2022-03-03 18:43:12,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:43:12,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:12,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:12,488 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:12,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-03 18:43:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:12,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:43:12,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:12,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:43:12,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183035686] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:12,941 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:12,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2022-03-03 18:43:12,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717134296] [2022-03-03 18:43:12,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:12,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 18:43:12,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 18:43:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-03-03 18:43:12,941 INFO L87 Difference]: Start difference. First operand 25256 states and 96042 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:13,447 INFO L93 Difference]: Finished difference Result 26140 states and 98548 transitions. [2022-03-03 18:43:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:43:13,447 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:43:13,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:13,540 INFO L225 Difference]: With dead ends: 26140 [2022-03-03 18:43:13,540 INFO L226 Difference]: Without dead ends: 26060 [2022-03-03 18:43:13,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:43:13,540 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 118 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:13,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 741 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:43:13,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26060 states. [2022-03-03 18:43:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26060 to 25404. [2022-03-03 18:43:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25404 states, 25403 states have (on average 3.804117623902689) internal successors, (96636), 25403 states have internal predecessors, (96636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25404 states to 25404 states and 96636 transitions. [2022-03-03 18:43:14,226 INFO L78 Accepts]: Start accepts. Automaton has 25404 states and 96636 transitions. Word has length 27 [2022-03-03 18:43:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:14,226 INFO L470 AbstractCegarLoop]: Abstraction has 25404 states and 96636 transitions. [2022-03-03 18:43:14,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:14,226 INFO L276 IsEmpty]: Start isEmpty. Operand 25404 states and 96636 transitions. [2022-03-03 18:43:14,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-03 18:43:14,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:14,285 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:14,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:14,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:14,485 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:14,486 INFO L85 PathProgramCache]: Analyzing trace with hash 741935370, now seen corresponding path program 68 times [2022-03-03 18:43:14,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:14,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764781956] [2022-03-03 18:43:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:14,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:14,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:14,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764781956] [2022-03-03 18:43:14,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764781956] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:14,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982679773] [2022-03-03 18:43:14,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:43:14,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:14,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:14,580 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:14,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-03 18:43:14,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:43:14,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:14,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:43:14,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:14,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:43:15,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982679773] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:15,037 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:15,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-03-03 18:43:15,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935645924] [2022-03-03 18:43:15,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:15,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:43:15,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:15,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:43:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:43:15,038 INFO L87 Difference]: Start difference. First operand 25404 states and 96636 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:15,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:15,594 INFO L93 Difference]: Finished difference Result 27191 states and 101959 transitions. [2022-03-03 18:43:15,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:43:15,594 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-03 18:43:15,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:15,696 INFO L225 Difference]: With dead ends: 27191 [2022-03-03 18:43:15,696 INFO L226 Difference]: Without dead ends: 27161 [2022-03-03 18:43:15,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:43:15,696 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 141 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:15,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 890 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:43:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27161 states. [2022-03-03 18:43:16,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27161 to 25631. [2022-03-03 18:43:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25631 states, 25630 states have (on average 3.8072181037846273) internal successors, (97579), 25630 states have internal predecessors, (97579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25631 states to 25631 states and 97579 transitions. [2022-03-03 18:43:16,661 INFO L78 Accepts]: Start accepts. Automaton has 25631 states and 97579 transitions. Word has length 27 [2022-03-03 18:43:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:16,661 INFO L470 AbstractCegarLoop]: Abstraction has 25631 states and 97579 transitions. [2022-03-03 18:43:16,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 25631 states and 97579 transitions. [2022-03-03 18:43:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:43:16,727 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:16,727 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:16,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-03-03 18:43:16,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:16,928 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:16,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1010428170, now seen corresponding path program 69 times [2022-03-03 18:43:16,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:16,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597351401] [2022-03-03 18:43:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:16,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:16,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:16,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597351401] [2022-03-03 18:43:16,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597351401] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:16,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392081324] [2022-03-03 18:43:16,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:43:16,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:16,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:16,966 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:16,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-03 18:43:16,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:43:16,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:16,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:43:16,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 18:43:17,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 18:43:17,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392081324] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:17,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:17,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-03-03 18:43:17,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080082782] [2022-03-03 18:43:17,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:17,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 18:43:17,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:17,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 18:43:17,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-03 18:43:17,113 INFO L87 Difference]: Start difference. First operand 25631 states and 97579 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:18,340 INFO L93 Difference]: Finished difference Result 45208 states and 159277 transitions. [2022-03-03 18:43:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 18:43:18,341 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-03 18:43:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:18,555 INFO L225 Difference]: With dead ends: 45208 [2022-03-03 18:43:18,555 INFO L226 Difference]: Without dead ends: 44876 [2022-03-03 18:43:18,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=946, Invalid=3086, Unknown=0, NotChecked=0, Total=4032 [2022-03-03 18:43:18,556 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 358 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:18,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 229 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:43:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44876 states. [2022-03-03 18:43:19,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44876 to 29739. [2022-03-03 18:43:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29739 states, 29738 states have (on average 3.745947945389737) internal successors, (111397), 29738 states have internal predecessors, (111397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29739 states to 29739 states and 111397 transitions. [2022-03-03 18:43:19,492 INFO L78 Accepts]: Start accepts. Automaton has 29739 states and 111397 transitions. Word has length 29 [2022-03-03 18:43:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:19,492 INFO L470 AbstractCegarLoop]: Abstraction has 29739 states and 111397 transitions. [2022-03-03 18:43:19,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 29739 states and 111397 transitions. [2022-03-03 18:43:19,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:43:19,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:19,554 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:19,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:19,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-03-03 18:43:19,754 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:19,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:19,755 INFO L85 PathProgramCache]: Analyzing trace with hash -917674058, now seen corresponding path program 70 times [2022-03-03 18:43:19,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:19,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398896416] [2022-03-03 18:43:19,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:19,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:19,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:19,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398896416] [2022-03-03 18:43:19,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398896416] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:19,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305710118] [2022-03-03 18:43:19,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:43:19,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:19,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:19,791 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:19,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-03 18:43:19,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:43:19,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:19,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:43:19,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:19,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:19,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305710118] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:19,911 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:19,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-03 18:43:19,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071296742] [2022-03-03 18:43:19,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:19,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 18:43:19,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:19,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 18:43:19,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:43:19,912 INFO L87 Difference]: Start difference. First operand 29739 states and 111397 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:20,401 INFO L93 Difference]: Finished difference Result 39651 states and 146789 transitions. [2022-03-03 18:43:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 18:43:20,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-03 18:43:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:20,542 INFO L225 Difference]: With dead ends: 39651 [2022-03-03 18:43:20,542 INFO L226 Difference]: Without dead ends: 39530 [2022-03-03 18:43:20,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-03-03 18:43:20,543 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 188 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:20,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 63 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:43:20,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39530 states. [2022-03-03 18:43:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39530 to 36556. [2022-03-03 18:43:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36556 states, 36555 states have (on average 3.7629052113254002) internal successors, (137553), 36555 states have internal predecessors, (137553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:21,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36556 states to 36556 states and 137553 transitions. [2022-03-03 18:43:21,622 INFO L78 Accepts]: Start accepts. Automaton has 36556 states and 137553 transitions. Word has length 29 [2022-03-03 18:43:21,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:21,622 INFO L470 AbstractCegarLoop]: Abstraction has 36556 states and 137553 transitions. [2022-03-03 18:43:21,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:21,622 INFO L276 IsEmpty]: Start isEmpty. Operand 36556 states and 137553 transitions. [2022-03-03 18:43:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:43:21,702 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:21,702 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:21,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-03-03 18:43:21,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-03-03 18:43:21,902 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:21,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash -33618958, now seen corresponding path program 71 times [2022-03-03 18:43:21,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:21,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140105051] [2022-03-03 18:43:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:21,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 18:43:21,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:21,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140105051] [2022-03-03 18:43:21,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140105051] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:21,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923328738] [2022-03-03 18:43:21,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:43:21,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:21,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:21,940 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:21,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-03 18:43:21,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:43:21,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:21,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:43:21,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 18:43:22,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 18:43:22,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923328738] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:22,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:22,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-03 18:43:22,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944152875] [2022-03-03 18:43:22,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:22,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 18:43:22,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 18:43:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:43:22,047 INFO L87 Difference]: Start difference. First operand 36556 states and 137553 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:22,954 INFO L93 Difference]: Finished difference Result 72604 states and 263288 transitions. [2022-03-03 18:43:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 18:43:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-03 18:43:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:23,430 INFO L225 Difference]: With dead ends: 72604 [2022-03-03 18:43:23,431 INFO L226 Difference]: Without dead ends: 71924 [2022-03-03 18:43:23,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=456, Invalid=1436, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 18:43:23,431 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 690 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:23,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 74 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:43:23,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71924 states. [2022-03-03 18:43:25,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71924 to 56835. [2022-03-03 18:43:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56835 states, 56834 states have (on average 3.780958581131013) internal successors, (214887), 56834 states have internal predecessors, (214887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56835 states to 56835 states and 214887 transitions. [2022-03-03 18:43:25,457 INFO L78 Accepts]: Start accepts. Automaton has 56835 states and 214887 transitions. Word has length 29 [2022-03-03 18:43:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:25,457 INFO L470 AbstractCegarLoop]: Abstraction has 56835 states and 214887 transitions. [2022-03-03 18:43:25,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 56835 states and 214887 transitions. [2022-03-03 18:43:25,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:43:25,808 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:25,808 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:25,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-03-03 18:43:26,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:26,009 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:26,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:26,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1595309198, now seen corresponding path program 72 times [2022-03-03 18:43:26,009 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:26,009 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985225396] [2022-03-03 18:43:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:26,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:26,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985225396] [2022-03-03 18:43:26,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985225396] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:26,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38068331] [2022-03-03 18:43:26,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:43:26,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:26,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:26,035 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:26,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-03 18:43:26,060 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:43:26,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:26,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:43:26,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:26,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:26,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38068331] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:26,155 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:26,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2022-03-03 18:43:26,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014405136] [2022-03-03 18:43:26,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:26,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:43:26,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:26,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:43:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:43:26,156 INFO L87 Difference]: Start difference. First operand 56835 states and 214887 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:27,684 INFO L93 Difference]: Finished difference Result 89898 states and 321645 transitions. [2022-03-03 18:43:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-03 18:43:27,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-03 18:43:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:28,029 INFO L225 Difference]: With dead ends: 89898 [2022-03-03 18:43:28,029 INFO L226 Difference]: Without dead ends: 89269 [2022-03-03 18:43:28,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1258, Invalid=4442, Unknown=0, NotChecked=0, Total=5700 [2022-03-03 18:43:28,030 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 515 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:28,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 277 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:43:28,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89269 states. [2022-03-03 18:43:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89269 to 56278. [2022-03-03 18:43:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56278 states, 56277 states have (on average 3.725216340600956) internal successors, (209644), 56277 states have internal predecessors, (209644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56278 states to 56278 states and 209644 transitions. [2022-03-03 18:43:30,174 INFO L78 Accepts]: Start accepts. Automaton has 56278 states and 209644 transitions. Word has length 29 [2022-03-03 18:43:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:30,174 INFO L470 AbstractCegarLoop]: Abstraction has 56278 states and 209644 transitions. [2022-03-03 18:43:30,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 56278 states and 209644 transitions. [2022-03-03 18:43:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:43:30,293 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:30,293 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:30,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-03-03 18:43:30,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:30,495 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:30,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1683071826, now seen corresponding path program 73 times [2022-03-03 18:43:30,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:30,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502741917] [2022-03-03 18:43:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:30,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:30,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:30,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502741917] [2022-03-03 18:43:30,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502741917] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:30,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034882708] [2022-03-03 18:43:30,521 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:43:30,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:30,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:30,523 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:30,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-03 18:43:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:30,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:43:30,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:30,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:30,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034882708] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:30,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:30,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-03-03 18:43:30,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379170293] [2022-03-03 18:43:30,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:30,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 18:43:30,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:30,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 18:43:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:43:30,621 INFO L87 Difference]: Start difference. First operand 56278 states and 209644 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:31,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:31,370 INFO L93 Difference]: Finished difference Result 71865 states and 264151 transitions. [2022-03-03 18:43:31,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 18:43:31,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-03 18:43:31,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:31,651 INFO L225 Difference]: With dead ends: 71865 [2022-03-03 18:43:31,651 INFO L226 Difference]: Without dead ends: 71569 [2022-03-03 18:43:31,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:43:31,652 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 85 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:31,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 72 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:43:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71569 states. [2022-03-03 18:43:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71569 to 65321. [2022-03-03 18:43:33,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65321 states, 65320 states have (on average 3.7572565829761175) internal successors, (245424), 65320 states have internal predecessors, (245424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65321 states to 65321 states and 245424 transitions. [2022-03-03 18:43:33,911 INFO L78 Accepts]: Start accepts. Automaton has 65321 states and 245424 transitions. Word has length 29 [2022-03-03 18:43:33,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:33,911 INFO L470 AbstractCegarLoop]: Abstraction has 65321 states and 245424 transitions. [2022-03-03 18:43:33,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:33,912 INFO L276 IsEmpty]: Start isEmpty. Operand 65321 states and 245424 transitions. [2022-03-03 18:43:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:43:34,058 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:34,058 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:34,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-03-03 18:43:34,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-03-03 18:43:34,263 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:34,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash 470618158, now seen corresponding path program 74 times [2022-03-03 18:43:34,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:34,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488126247] [2022-03-03 18:43:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:34,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:34,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488126247] [2022-03-03 18:43:34,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488126247] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:34,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109001485] [2022-03-03 18:43:34,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:43:34,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:34,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:34,291 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:34,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-03 18:43:34,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:43:34,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:34,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:43:34,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:43:34,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:43:34,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109001485] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:34,402 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:34,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-03-03 18:43:34,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340122759] [2022-03-03 18:43:34,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:34,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 18:43:34,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:34,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 18:43:34,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:43:34,403 INFO L87 Difference]: Start difference. First operand 65321 states and 245424 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:35,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:35,806 INFO L93 Difference]: Finished difference Result 103005 states and 375221 transitions. [2022-03-03 18:43:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 18:43:35,807 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-03 18:43:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:36,448 INFO L225 Difference]: With dead ends: 103005 [2022-03-03 18:43:36,449 INFO L226 Difference]: Without dead ends: 102584 [2022-03-03 18:43:36,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=688, Invalid=2392, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 18:43:36,449 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 779 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:36,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 119 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:43:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102584 states. [2022-03-03 18:43:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102584 to 71823. [2022-03-03 18:43:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71823 states, 71822 states have (on average 3.7705020745732507) internal successors, (270805), 71822 states have internal predecessors, (270805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71823 states to 71823 states and 270805 transitions. [2022-03-03 18:43:39,290 INFO L78 Accepts]: Start accepts. Automaton has 71823 states and 270805 transitions. Word has length 29 [2022-03-03 18:43:39,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:39,290 INFO L470 AbstractCegarLoop]: Abstraction has 71823 states and 270805 transitions. [2022-03-03 18:43:39,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:39,290 INFO L276 IsEmpty]: Start isEmpty. Operand 71823 states and 270805 transitions. [2022-03-03 18:43:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:43:39,451 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:39,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:39,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-03-03 18:43:39,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:39,651 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:39,652 INFO L85 PathProgramCache]: Analyzing trace with hash -57360982, now seen corresponding path program 75 times [2022-03-03 18:43:39,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:39,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368750506] [2022-03-03 18:43:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:39,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:39,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:39,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368750506] [2022-03-03 18:43:39,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368750506] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:39,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385778112] [2022-03-03 18:43:39,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:43:39,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:39,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:39,679 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:39,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-03 18:43:39,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 18:43:39,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:39,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:43:39,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:43:40,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:43:40,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385778112] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:40,073 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:40,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-03-03 18:43:40,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111210103] [2022-03-03 18:43:40,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:40,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 18:43:40,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 18:43:40,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:43:40,074 INFO L87 Difference]: Start difference. First operand 71823 states and 270805 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:41,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:41,447 INFO L93 Difference]: Finished difference Result 96023 states and 345002 transitions. [2022-03-03 18:43:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 18:43:41,447 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-03 18:43:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:41,867 INFO L225 Difference]: With dead ends: 96023 [2022-03-03 18:43:41,868 INFO L226 Difference]: Without dead ends: 95789 [2022-03-03 18:43:41,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=767, Invalid=2893, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 18:43:41,868 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 275 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:41,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 179 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:43:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95789 states. [2022-03-03 18:43:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95789 to 69544. [2022-03-03 18:43:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69544 states, 69543 states have (on average 3.776915002228837) internal successors, (262658), 69543 states have internal predecessors, (262658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69544 states to 69544 states and 262658 transitions. [2022-03-03 18:43:44,665 INFO L78 Accepts]: Start accepts. Automaton has 69544 states and 262658 transitions. Word has length 29 [2022-03-03 18:43:44,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:44,665 INFO L470 AbstractCegarLoop]: Abstraction has 69544 states and 262658 transitions. [2022-03-03 18:43:44,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 69544 states and 262658 transitions. [2022-03-03 18:43:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:43:44,808 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:44,808 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:44,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-03-03 18:43:45,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:45,009 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:45,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1289401570, now seen corresponding path program 76 times [2022-03-03 18:43:45,009 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:45,009 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873951346] [2022-03-03 18:43:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:45,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:45,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873951346] [2022-03-03 18:43:45,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873951346] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:45,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079983652] [2022-03-03 18:43:45,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:43:45,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:45,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:45,048 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:45,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-03 18:43:45,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:43:45,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:45,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:43:45,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 18:43:45,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 18:43:45,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079983652] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:45,155 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:45,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-03-03 18:43:45,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655449348] [2022-03-03 18:43:45,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:45,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 18:43:45,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 18:43:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-03-03 18:43:45,155 INFO L87 Difference]: Start difference. First operand 69544 states and 262658 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:46,045 INFO L93 Difference]: Finished difference Result 83392 states and 312140 transitions. [2022-03-03 18:43:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 18:43:46,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-03 18:43:46,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:46,405 INFO L225 Difference]: With dead ends: 83392 [2022-03-03 18:43:46,405 INFO L226 Difference]: Without dead ends: 83358 [2022-03-03 18:43:46,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:43:46,406 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 100 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:46,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 68 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:43:46,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83358 states. [2022-03-03 18:43:48,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83358 to 70150. [2022-03-03 18:43:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70150 states, 70149 states have (on average 3.7759483385365438) internal successors, (264879), 70149 states have internal predecessors, (264879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70150 states to 70150 states and 264879 transitions. [2022-03-03 18:43:48,837 INFO L78 Accepts]: Start accepts. Automaton has 70150 states and 264879 transitions. Word has length 29 [2022-03-03 18:43:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:48,837 INFO L470 AbstractCegarLoop]: Abstraction has 70150 states and 264879 transitions. [2022-03-03 18:43:48,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 70150 states and 264879 transitions. [2022-03-03 18:43:48,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:43:48,988 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:48,988 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:49,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:49,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:49,189 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash -259129882, now seen corresponding path program 77 times [2022-03-03 18:43:49,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:49,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812335028] [2022-03-03 18:43:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:49,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 18:43:49,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:49,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812335028] [2022-03-03 18:43:49,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812335028] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:49,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397486817] [2022-03-03 18:43:49,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:43:49,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:49,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:49,217 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:49,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-03 18:43:49,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:43:49,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:49,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:43:49,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:43:49,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:43:49,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397486817] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:49,325 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:49,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-03-03 18:43:49,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464112232] [2022-03-03 18:43:49,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:49,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 18:43:49,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:49,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 18:43:49,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-03 18:43:49,325 INFO L87 Difference]: Start difference. First operand 70150 states and 264879 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:50,922 INFO L93 Difference]: Finished difference Result 101990 states and 362414 transitions. [2022-03-03 18:43:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 18:43:50,923 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-03 18:43:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:51,555 INFO L225 Difference]: With dead ends: 101990 [2022-03-03 18:43:51,559 INFO L226 Difference]: Without dead ends: 101861 [2022-03-03 18:43:51,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1792 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=997, Invalid=3695, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 18:43:51,560 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 613 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:51,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 218 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:43:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101861 states. [2022-03-03 18:43:53,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101861 to 71426. [2022-03-03 18:43:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71426 states, 71425 states have (on average 3.7455512775638784) internal successors, (267526), 71425 states have internal predecessors, (267526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71426 states to 71426 states and 267526 transitions. [2022-03-03 18:43:54,417 INFO L78 Accepts]: Start accepts. Automaton has 71426 states and 267526 transitions. Word has length 29 [2022-03-03 18:43:54,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:54,417 INFO L470 AbstractCegarLoop]: Abstraction has 71426 states and 267526 transitions. [2022-03-03 18:43:54,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 71426 states and 267526 transitions. [2022-03-03 18:43:54,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-03 18:43:54,575 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:54,575 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:54,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:54,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-03-03 18:43:54,779 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 18:43:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:54,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1279370204, now seen corresponding path program 78 times [2022-03-03 18:43:54,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:54,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239978862] [2022-03-03 18:43:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:54,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:54,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:54,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239978862] [2022-03-03 18:43:54,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239978862] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:54,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511011000] [2022-03-03 18:43:54,818 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:43:54,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:54,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:54,819 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:43:54,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-03 18:43:54,839 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:43:54,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:54,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:43:54,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:54,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:43:54,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511011000] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:54,922 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:54,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-03-03 18:43:54,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058235446] [2022-03-03 18:43:54,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:54,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:43:54,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:54,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:43:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:43:54,923 INFO L87 Difference]: Start difference. First operand 71426 states and 267526 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:56,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:56,231 INFO L93 Difference]: Finished difference Result 89878 states and 325948 transitions. [2022-03-03 18:43:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 18:43:56,231 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-03 18:43:56,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted.