/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/loop-lockstep-example.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 23:58:50,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 23:58:50,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 23:58:50,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 23:58:51,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-10 23:58:51,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 23:58:51,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 23:58:51,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 23:58:51,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 23:58:51,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 23:58:51,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 23:58:51,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 23:58:51,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 23:58:51,063 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 23:58:51,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 23:58:51,064 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 23:58:51,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 23:58:51,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 23:58:51,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 23:58:51,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 23:58:51,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 23:58:51,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 23:58:51,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 23:58:51,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 23:58:51,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 23:58:51,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 23:58:51,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 23:58:51,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 23:58:51,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 23:58:51,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 23:58:51,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:58:51,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 23:58:51,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 23:58:51,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 23:58:51,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 23:58:51,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 23:58:51,066 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 23:58:51,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 23:58:51,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 23:58:51,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 23:58:51,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 23:58:51,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 23:58:51,276 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 23:58:51,276 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 23:58:51,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/loop-lockstep-example.bpl [2022-02-10 23:58:51,278 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/loop-lockstep-example.bpl' [2022-02-10 23:58:51,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 23:58:51,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 23:58:51,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 23:58:51,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 23:58:51,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 23:58:51,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/1) ... [2022-02-10 23:58:51,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/1) ... [2022-02-10 23:58:51,315 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 23:58:51,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 23:58:51,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 23:58:51,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 23:58:51,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 23:58:51,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/1) ... [2022-02-10 23:58:51,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/1) ... [2022-02-10 23:58:51,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/1) ... [2022-02-10 23:58:51,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/1) ... [2022-02-10 23:58:51,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/1) ... [2022-02-10 23:58:51,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/1) ... [2022-02-10 23:58:51,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/1) ... [2022-02-10 23:58:51,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 23:58:51,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 23:58:51,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 23:58:51,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 23:58:51,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/1) ... [2022-02-10 23:58:51,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:58:51,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:51,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 23:58:51,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 23:58:51,392 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-10 23:58:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 23:58:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 23:58:51,392 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-10 23:58:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 23:58:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 23:58:51,393 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 23:58:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 23:58:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 23:58:51,393 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 23:58:51,428 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 23:58:51,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 23:58:51,521 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 23:58:51,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 23:58:51,526 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 23:58:51,527 INFO L202 PluginConnector]: Adding new model loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:58:51 BoogieIcfgContainer [2022-02-10 23:58:51,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 23:58:51,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 23:58:51,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 23:58:51,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 23:58:51,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:51" (1/2) ... [2022-02-10 23:58:51,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f621e0 and model type loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:58:51, skipping insertion in model container [2022-02-10 23:58:51,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:58:51" (2/2) ... [2022-02-10 23:58:51,537 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-lockstep-example.bpl [2022-02-10 23:58:51,546 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 23:58:51,547 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 23:58:51,547 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 23:58:51,547 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 23:58:51,567 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,567 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,569 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,570 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,570 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,570 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,571 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,571 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,572 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,572 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,572 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,573 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,573 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,574 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,574 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,575 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,575 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,575 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,576 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,576 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,579 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,580 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:51,583 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 23:58:51,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:58:51,626 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 23:58:51,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 23:58:51,634 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2022-02-10 23:58:51,659 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 73 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 72 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 72 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-10 23:58:51,667 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:51,667 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:51,668 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:51,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:51,672 INFO L85 PathProgramCache]: Analyzing trace with hash 64970491, now seen corresponding path program 1 times [2022-02-10 23:58:51,677 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:51,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380178279] [2022-02-10 23:58:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:51,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:51,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:51,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380178279] [2022-02-10 23:58:51,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380178279] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:51,764 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:51,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-02-10 23:58:51,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950777105] [2022-02-10 23:58:51,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:51,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 23:58:51,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:51,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 23:58:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:58:51,788 INFO L87 Difference]: Start difference. First operand has 73 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 72 states have internal predecessors, (142), 0 states have call successors, (0), 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, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:51,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:51,830 INFO L93 Difference]: Finished difference Result 107 states and 209 transitions. [2022-02-10 23:58:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 23:58:51,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-02-10 23:58:51,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:51,838 INFO L225 Difference]: With dead ends: 107 [2022-02-10 23:58:51,838 INFO L226 Difference]: Without dead ends: 100 [2022-02-10 23:58:51,839 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:58:51,841 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:51,842 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-10 23:58:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2022-02-10 23:58:51,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.9772727272727273) internal successors, (174), 88 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 174 transitions. [2022-02-10 23:58:51,899 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 174 transitions. Word has length 12 [2022-02-10 23:58:51,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:51,899 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 174 transitions. [2022-02-10 23:58:51,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 174 transitions. [2022-02-10 23:58:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 23:58:51,901 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:51,901 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:51,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 23:58:51,901 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:51,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1879483609, now seen corresponding path program 1 times [2022-02-10 23:58:51,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:51,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240074001] [2022-02-10 23:58:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:51,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:51,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:51,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240074001] [2022-02-10 23:58:51,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240074001] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:51,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:51,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:51,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761604233] [2022-02-10 23:58:51,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:51,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:58:51,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:51,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:58:51,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:58:51,947 INFO L87 Difference]: Start difference. First operand 89 states and 174 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-02-10 23:58:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:52,036 INFO L93 Difference]: Finished difference Result 149 states and 288 transitions. [2022-02-10 23:58:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:58:52,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 [2022-02-10 23:58:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:52,038 INFO L225 Difference]: With dead ends: 149 [2022-02-10 23:58:52,038 INFO L226 Difference]: Without dead ends: 141 [2022-02-10 23:58:52,039 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:52,040 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:52,040 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 80 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-02-10 23:58:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 84. [2022-02-10 23:58:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.9759036144578312) internal successors, (164), 83 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:52,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2022-02-10 23:58:52,059 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 15 [2022-02-10 23:58:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:52,059 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2022-02-10 23:58:52,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-02-10 23:58:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2022-02-10 23:58:52,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 23:58:52,060 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:52,061 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:52,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 23:58:52,061 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:52,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:52,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1802889199, now seen corresponding path program 2 times [2022-02-10 23:58:52,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:52,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510445646] [2022-02-10 23:58:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:52,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:52,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:52,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510445646] [2022-02-10 23:58:52,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510445646] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:52,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223927483] [2022-02-10 23:58:52,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:58:52,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:52,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:52,104 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) [2022-02-10 23:58:52,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 23:58:52,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:58:52,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:52,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 23:58:52,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:52,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:52,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223927483] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:52,257 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:52,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-10 23:58:52,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581574690] [2022-02-10 23:58:52,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:52,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:52,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:52,259 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2022-02-10 23:58:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:52,373 INFO L93 Difference]: Finished difference Result 229 states and 435 transitions. [2022-02-10 23:58:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 23:58:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 15 [2022-02-10 23:58:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:52,378 INFO L225 Difference]: With dead ends: 229 [2022-02-10 23:58:52,378 INFO L226 Difference]: Without dead ends: 229 [2022-02-10 23:58:52,379 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:58:52,382 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 67 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:52,383 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 104 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-02-10 23:58:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 88. [2022-02-10 23:58:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 87 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 175 transitions. [2022-02-10 23:58:52,399 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 175 transitions. Word has length 15 [2022-02-10 23:58:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:52,399 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 175 transitions. [2022-02-10 23:58:52,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2022-02-10 23:58:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 175 transitions. [2022-02-10 23:58:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 23:58:52,400 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:52,400 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:52,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:52,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:52,607 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1824729671, now seen corresponding path program 3 times [2022-02-10 23:58:52,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:52,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906733477] [2022-02-10 23:58:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:52,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:52,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906733477] [2022-02-10 23:58:52,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906733477] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:52,638 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:52,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:52,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379946450] [2022-02-10 23:58:52,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:52,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:58:52,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:52,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:58:52,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:58:52,639 INFO L87 Difference]: Start difference. First operand 88 states and 175 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-02-10 23:58:52,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:52,710 INFO L93 Difference]: Finished difference Result 185 states and 357 transitions. [2022-02-10 23:58:52,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 23:58:52,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 [2022-02-10 23:58:52,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:52,712 INFO L225 Difference]: With dead ends: 185 [2022-02-10 23:58:52,712 INFO L226 Difference]: Without dead ends: 182 [2022-02-10 23:58:52,715 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-10 23:58:52,723 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 70 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:52,723 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 78 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-02-10 23:58:52,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 87. [2022-02-10 23:58:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.9883720930232558) internal successors, (171), 86 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:52,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 171 transitions. [2022-02-10 23:58:52,732 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 171 transitions. Word has length 15 [2022-02-10 23:58:52,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:52,733 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 171 transitions. [2022-02-10 23:58:52,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-02-10 23:58:52,733 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 171 transitions. [2022-02-10 23:58:52,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 23:58:52,734 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:52,734 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:52,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 23:58:52,734 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:52,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1385697411, now seen corresponding path program 4 times [2022-02-10 23:58:52,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:52,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816497675] [2022-02-10 23:58:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:52,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:52,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:52,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816497675] [2022-02-10 23:58:52,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816497675] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:52,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378403043] [2022-02-10 23:58:52,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:58:52,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:52,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:52,775 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) [2022-02-10 23:58:52,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 23:58:52,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:58:52,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:52,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 23:58:52,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:52,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:52,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378403043] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:52,885 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:52,885 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-10 23:58:52,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024598117] [2022-02-10 23:58:52,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:52,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:58:52,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:52,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:58:52,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:58:52,886 INFO L87 Difference]: Start difference. First operand 87 states and 171 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:52,957 INFO L93 Difference]: Finished difference Result 149 states and 293 transitions. [2022-02-10 23:58:52,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 23:58:52,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 15 [2022-02-10 23:58:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:52,958 INFO L225 Difference]: With dead ends: 149 [2022-02-10 23:58:52,959 INFO L226 Difference]: Without dead ends: 149 [2022-02-10 23:58:52,959 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:58:52,959 INFO L934 BasicCegarLoop]: 34 mSDtfsCounter, 48 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:52,960 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 74 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:52,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-02-10 23:58:52,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 85. [2022-02-10 23:58:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.0) internal successors, (168), 84 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 168 transitions. [2022-02-10 23:58:52,976 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 168 transitions. Word has length 15 [2022-02-10 23:58:52,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:52,976 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 168 transitions. [2022-02-10 23:58:52,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:52,977 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 168 transitions. [2022-02-10 23:58:52,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 23:58:52,978 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:52,978 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:52,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:53,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:53,194 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:53,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:53,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1352449055, now seen corresponding path program 5 times [2022-02-10 23:58:53,195 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:53,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484976468] [2022-02-10 23:58:53,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:53,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:53,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:53,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484976468] [2022-02-10 23:58:53,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484976468] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:53,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926472990] [2022-02-10 23:58:53,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:58:53,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:53,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:53,234 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) [2022-02-10 23:58:53,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 23:58:53,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:58:53,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:53,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 23:58:53,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:53,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:53,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926472990] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:53,343 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:53,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-10 23:58:53,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596808375] [2022-02-10 23:58:53,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:53,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:53,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:53,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:53,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:53,345 INFO L87 Difference]: Start difference. First operand 85 states and 168 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2022-02-10 23:58:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:53,418 INFO L93 Difference]: Finished difference Result 177 states and 340 transitions. [2022-02-10 23:58:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 23:58:53,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 15 [2022-02-10 23:58:53,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:53,419 INFO L225 Difference]: With dead ends: 177 [2022-02-10 23:58:53,419 INFO L226 Difference]: Without dead ends: 177 [2022-02-10 23:58:53,419 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:58:53,420 INFO L934 BasicCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:53,421 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 112 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-10 23:58:53,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 85. [2022-02-10 23:58:53,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.0) internal successors, (168), 84 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 168 transitions. [2022-02-10 23:58:53,429 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 168 transitions. Word has length 15 [2022-02-10 23:58:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:53,430 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 168 transitions. [2022-02-10 23:58:53,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2022-02-10 23:58:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 168 transitions. [2022-02-10 23:58:53,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 23:58:53,433 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:53,433 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:53,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:53,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:53,652 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1330608583, now seen corresponding path program 6 times [2022-02-10 23:58:53,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:53,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525017790] [2022-02-10 23:58:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:53,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:53,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:53,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525017790] [2022-02-10 23:58:53,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525017790] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:53,674 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:53,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:53,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392947494] [2022-02-10 23:58:53,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:53,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:58:53,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:53,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:58:53,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:58:53,675 INFO L87 Difference]: Start difference. First operand 85 states and 168 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-02-10 23:58:53,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:53,713 INFO L93 Difference]: Finished difference Result 115 states and 225 transitions. [2022-02-10 23:58:53,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 23:58:53,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 [2022-02-10 23:58:53,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:53,714 INFO L225 Difference]: With dead ends: 115 [2022-02-10 23:58:53,714 INFO L226 Difference]: Without dead ends: 112 [2022-02-10 23:58:53,715 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:53,715 INFO L934 BasicCegarLoop]: 36 mSDtfsCounter, 46 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:53,715 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 86 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:53,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-02-10 23:58:53,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2022-02-10 23:58:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.9746835443037976) internal successors, (156), 79 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 156 transitions. [2022-02-10 23:58:53,718 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 156 transitions. Word has length 15 [2022-02-10 23:58:53,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:53,718 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 156 transitions. [2022-02-10 23:58:53,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-02-10 23:58:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 156 transitions. [2022-02-10 23:58:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:53,718 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:53,718 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:53,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-10 23:58:53,718 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:53,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:53,719 INFO L85 PathProgramCache]: Analyzing trace with hash 762213725, now seen corresponding path program 1 times [2022-02-10 23:58:53,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:53,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870490847] [2022-02-10 23:58:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:53,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:53,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:53,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870490847] [2022-02-10 23:58:53,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870490847] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:53,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129721347] [2022-02-10 23:58:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:53,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:53,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:53,742 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) [2022-02-10 23:58:53,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 23:58:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:53,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 23:58:53,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:53,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:53,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129721347] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:53,840 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:53,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-10 23:58:53,840 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024491051] [2022-02-10 23:58:53,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:53,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:58:53,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:53,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:58:53,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:58:53,841 INFO L87 Difference]: Start difference. First operand 80 states and 156 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:53,886 INFO L93 Difference]: Finished difference Result 107 states and 210 transitions. [2022-02-10 23:58:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 23:58:53,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 23:58:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:53,887 INFO L225 Difference]: With dead ends: 107 [2022-02-10 23:58:53,887 INFO L226 Difference]: Without dead ends: 107 [2022-02-10 23:58:53,887 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:58:53,887 INFO L934 BasicCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:53,888 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 66 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-10 23:58:53,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2022-02-10 23:58:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.9772727272727273) internal successors, (174), 88 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 174 transitions. [2022-02-10 23:58:53,890 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 174 transitions. Word has length 18 [2022-02-10 23:58:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:53,890 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 174 transitions. [2022-02-10 23:58:53,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 174 transitions. [2022-02-10 23:58:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:53,891 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:53,891 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:53,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-10 23:58:54,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:54,106 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:54,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1703176541, now seen corresponding path program 2 times [2022-02-10 23:58:54,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:54,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214901314] [2022-02-10 23:58:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:54,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:54,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:54,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214901314] [2022-02-10 23:58:54,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214901314] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:54,133 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:54,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:54,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228509148] [2022-02-10 23:58:54,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:54,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:58:54,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:54,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:58:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:58:54,134 INFO L87 Difference]: Start difference. First operand 89 states and 174 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:54,171 INFO L93 Difference]: Finished difference Result 141 states and 272 transitions. [2022-02-10 23:58:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 23:58:54,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 23:58:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:54,172 INFO L225 Difference]: With dead ends: 141 [2022-02-10 23:58:54,172 INFO L226 Difference]: Without dead ends: 139 [2022-02-10 23:58:54,173 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:54,174 INFO L934 BasicCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:54,174 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 64 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-02-10 23:58:54,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 108. [2022-02-10 23:58:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.9906542056074767) internal successors, (213), 107 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 213 transitions. [2022-02-10 23:58:54,177 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 213 transitions. Word has length 18 [2022-02-10 23:58:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:54,177 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 213 transitions. [2022-02-10 23:58:54,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 213 transitions. [2022-02-10 23:58:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:54,178 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:54,178 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:54,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-10 23:58:54,178 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:54,179 INFO L85 PathProgramCache]: Analyzing trace with hash 884108263, now seen corresponding path program 3 times [2022-02-10 23:58:54,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:54,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464287626] [2022-02-10 23:58:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:54,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:54,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:54,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464287626] [2022-02-10 23:58:54,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464287626] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:54,209 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:54,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:54,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876881922] [2022-02-10 23:58:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:54,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:58:54,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:58:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:58:54,210 INFO L87 Difference]: Start difference. First operand 108 states and 213 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:54,252 INFO L93 Difference]: Finished difference Result 128 states and 252 transitions. [2022-02-10 23:58:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:58:54,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 23:58:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:54,253 INFO L225 Difference]: With dead ends: 128 [2022-02-10 23:58:54,253 INFO L226 Difference]: Without dead ends: 128 [2022-02-10 23:58:54,253 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:54,253 INFO L934 BasicCegarLoop]: 28 mSDtfsCounter, 44 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:54,253 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 65 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:54,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-02-10 23:58:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 90. [2022-02-10 23:58:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.9775280898876404) internal successors, (176), 89 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 176 transitions. [2022-02-10 23:58:54,256 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 176 transitions. Word has length 18 [2022-02-10 23:58:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:54,256 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 176 transitions. [2022-02-10 23:58:54,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 176 transitions. [2022-02-10 23:58:54,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:54,256 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:54,256 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:54,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-10 23:58:54,257 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:54,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:54,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1966952843, now seen corresponding path program 4 times [2022-02-10 23:58:54,257 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:54,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531285202] [2022-02-10 23:58:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:54,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:54,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:54,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531285202] [2022-02-10 23:58:54,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531285202] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:54,274 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:54,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:54,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721122366] [2022-02-10 23:58:54,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:54,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:58:54,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:54,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:58:54,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:58:54,275 INFO L87 Difference]: Start difference. First operand 90 states and 176 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:54,309 INFO L93 Difference]: Finished difference Result 149 states and 289 transitions. [2022-02-10 23:58:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:58:54,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 23:58:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:54,310 INFO L225 Difference]: With dead ends: 149 [2022-02-10 23:58:54,310 INFO L226 Difference]: Without dead ends: 145 [2022-02-10 23:58:54,310 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:54,311 INFO L934 BasicCegarLoop]: 33 mSDtfsCounter, 45 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:54,311 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 86 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-02-10 23:58:54,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 91. [2022-02-10 23:58:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.9777777777777779) internal successors, (178), 90 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 178 transitions. [2022-02-10 23:58:54,313 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 178 transitions. Word has length 18 [2022-02-10 23:58:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:54,313 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 178 transitions. [2022-02-10 23:58:54,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 178 transitions. [2022-02-10 23:58:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:54,314 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:54,314 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:54,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-10 23:58:54,314 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:54,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:54,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1564106097, now seen corresponding path program 5 times [2022-02-10 23:58:54,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:54,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483211767] [2022-02-10 23:58:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:54,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:54,331 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:54,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483211767] [2022-02-10 23:58:54,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483211767] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:54,331 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:54,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:54,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568043843] [2022-02-10 23:58:54,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:54,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:58:54,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:54,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:58:54,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:58:54,332 INFO L87 Difference]: Start difference. First operand 91 states and 178 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:54,392 INFO L93 Difference]: Finished difference Result 171 states and 330 transitions. [2022-02-10 23:58:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 23:58:54,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 23:58:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:54,393 INFO L225 Difference]: With dead ends: 171 [2022-02-10 23:58:54,393 INFO L226 Difference]: Without dead ends: 169 [2022-02-10 23:58:54,393 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-10 23:58:54,393 INFO L934 BasicCegarLoop]: 35 mSDtfsCounter, 53 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:54,394 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 84 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:54,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-02-10 23:58:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 110. [2022-02-10 23:58:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.9908256880733946) internal successors, (217), 109 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 217 transitions. [2022-02-10 23:58:54,397 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 217 transitions. Word has length 18 [2022-02-10 23:58:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:54,397 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 217 transitions. [2022-02-10 23:58:54,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 217 transitions. [2022-02-10 23:58:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:54,397 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:54,397 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:54,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-10 23:58:54,397 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:54,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash -143576395, now seen corresponding path program 6 times [2022-02-10 23:58:54,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:54,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543137445] [2022-02-10 23:58:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:54,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:54,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:54,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543137445] [2022-02-10 23:58:54,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543137445] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:54,414 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:54,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:54,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982556180] [2022-02-10 23:58:54,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:54,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:58:54,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:58:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:58:54,414 INFO L87 Difference]: Start difference. First operand 110 states and 217 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:54,464 INFO L93 Difference]: Finished difference Result 149 states and 292 transitions. [2022-02-10 23:58:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 23:58:54,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 23:58:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:54,465 INFO L225 Difference]: With dead ends: 149 [2022-02-10 23:58:54,465 INFO L226 Difference]: Without dead ends: 149 [2022-02-10 23:58:54,465 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-10 23:58:54,466 INFO L934 BasicCegarLoop]: 31 mSDtfsCounter, 54 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:54,466 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 89 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:54,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-02-10 23:58:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 91. [2022-02-10 23:58:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.9777777777777779) internal successors, (178), 90 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 178 transitions. [2022-02-10 23:58:54,468 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 178 transitions. Word has length 18 [2022-02-10 23:58:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:54,468 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 178 transitions. [2022-02-10 23:58:54,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 178 transitions. [2022-02-10 23:58:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:58:54,469 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:54,469 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:54,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-10 23:58:54,469 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:54,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1304143049, now seen corresponding path program 1 times [2022-02-10 23:58:54,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:54,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207093738] [2022-02-10 23:58:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:54,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:54,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:54,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207093738] [2022-02-10 23:58:54,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207093738] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:54,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415206307] [2022-02-10 23:58:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:54,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:54,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:54,538 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) [2022-02-10 23:58:54,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 23:58:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:54,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:58:54,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:54,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:54,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415206307] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:54,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:54,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 23:58:54,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163340310] [2022-02-10 23:58:54,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:54,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:54,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:54,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:54,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:54,703 INFO L87 Difference]: Start difference. First operand 91 states and 178 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 23:58:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:54,742 INFO L93 Difference]: Finished difference Result 200 states and 393 transitions. [2022-02-10 23:58:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:58:54,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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 [2022-02-10 23:58:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:54,743 INFO L225 Difference]: With dead ends: 200 [2022-02-10 23:58:54,743 INFO L226 Difference]: Without dead ends: 193 [2022-02-10 23:58:54,743 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:54,744 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 31 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:54,744 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 192 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-02-10 23:58:54,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 163. [2022-02-10 23:58:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 2.067901234567901) internal successors, (335), 162 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 335 transitions. [2022-02-10 23:58:54,748 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 335 transitions. Word has length 21 [2022-02-10 23:58:54,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:54,748 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 335 transitions. [2022-02-10 23:58:54,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 23:58:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 335 transitions. [2022-02-10 23:58:54,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:58:54,748 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:54,748 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:54,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:54,964 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,SelfDestructingSolverStorable13 [2022-02-10 23:58:54,964 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:54,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1370099405, now seen corresponding path program 2 times [2022-02-10 23:58:54,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:54,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38663273] [2022-02-10 23:58:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:54,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:55,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:55,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38663273] [2022-02-10 23:58:55,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38663273] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:55,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322205778] [2022-02-10 23:58:55,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:58:55,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:55,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:55,011 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) [2022-02-10 23:58:55,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 23:58:55,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:58:55,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:55,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:58:55,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:55,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:55,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322205778] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:55,166 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:55,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 23:58:55,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38545740] [2022-02-10 23:58:55,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:55,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:55,167 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:55,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:55,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:55,167 INFO L87 Difference]: Start difference. First operand 163 states and 335 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 23:58:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:55,207 INFO L93 Difference]: Finished difference Result 218 states and 444 transitions. [2022-02-10 23:58:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:58:55,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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 [2022-02-10 23:58:55,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:55,208 INFO L225 Difference]: With dead ends: 218 [2022-02-10 23:58:55,208 INFO L226 Difference]: Without dead ends: 211 [2022-02-10 23:58:55,208 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:55,208 INFO L934 BasicCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:55,209 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 185 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-02-10 23:58:55,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 190. [2022-02-10 23:58:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.105820105820106) internal successors, (398), 189 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 398 transitions. [2022-02-10 23:58:55,213 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 398 transitions. Word has length 21 [2022-02-10 23:58:55,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:55,213 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 398 transitions. [2022-02-10 23:58:55,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 23:58:55,213 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 398 transitions. [2022-02-10 23:58:55,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:58:55,214 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:55,214 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:55,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-02-10 23:58:55,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 23:58:55,430 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1820888329, now seen corresponding path program 3 times [2022-02-10 23:58:55,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:55,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179698400] [2022-02-10 23:58:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:55,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:55,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:55,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179698400] [2022-02-10 23:58:55,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179698400] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:55,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932445589] [2022-02-10 23:58:55,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:58:55,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:55,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:55,476 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) [2022-02-10 23:58:55,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 23:58:55,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:58:55,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:55,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:58:55,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:55,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:55,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932445589] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:55,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:55,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 23:58:55,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998974459] [2022-02-10 23:58:55,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:55,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:55,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:55,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:55,614 INFO L87 Difference]: Start difference. First operand 190 states and 398 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 23:58:55,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:55,650 INFO L93 Difference]: Finished difference Result 241 states and 499 transitions. [2022-02-10 23:58:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:58:55,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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 [2022-02-10 23:58:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:55,651 INFO L225 Difference]: With dead ends: 241 [2022-02-10 23:58:55,651 INFO L226 Difference]: Without dead ends: 234 [2022-02-10 23:58:55,651 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:55,651 INFO L934 BasicCegarLoop]: 37 mSDtfsCounter, 20 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:55,652 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 181 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-02-10 23:58:55,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 213. [2022-02-10 23:58:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.1367924528301887) internal successors, (453), 212 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 453 transitions. [2022-02-10 23:58:55,656 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 453 transitions. Word has length 21 [2022-02-10 23:58:55,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:55,656 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 453 transitions. [2022-02-10 23:58:55,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 23:58:55,656 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 453 transitions. [2022-02-10 23:58:55,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:58:55,656 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:55,657 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:55,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:55,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:55,870 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:55,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1357745997, now seen corresponding path program 4 times [2022-02-10 23:58:55,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:55,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275010979] [2022-02-10 23:58:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:55,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:55,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:55,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275010979] [2022-02-10 23:58:55,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275010979] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:55,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121255551] [2022-02-10 23:58:55,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:58:55,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:55,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:55,921 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) [2022-02-10 23:58:55,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 23:58:55,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:58:55,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:55,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:58:55,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:56,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:56,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121255551] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:56,059 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:56,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 23:58:56,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946671084] [2022-02-10 23:58:56,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:56,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:56,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:56,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:56,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:56,060 INFO L87 Difference]: Start difference. First operand 213 states and 453 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 23:58:56,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:56,097 INFO L93 Difference]: Finished difference Result 264 states and 554 transitions. [2022-02-10 23:58:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:58:56,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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 [2022-02-10 23:58:56,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:56,098 INFO L225 Difference]: With dead ends: 264 [2022-02-10 23:58:56,098 INFO L226 Difference]: Without dead ends: 257 [2022-02-10 23:58:56,098 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:56,099 INFO L934 BasicCegarLoop]: 37 mSDtfsCounter, 18 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:56,099 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 177 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:56,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-02-10 23:58:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 236. [2022-02-10 23:58:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.1617021276595745) internal successors, (508), 235 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 508 transitions. [2022-02-10 23:58:56,103 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 508 transitions. Word has length 21 [2022-02-10 23:58:56,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:56,103 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 508 transitions. [2022-02-10 23:58:56,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 23:58:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 508 transitions. [2022-02-10 23:58:56,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:58:56,104 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:56,104 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:56,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:56,320 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,SelfDestructingSolverStorable16 [2022-02-10 23:58:56,320 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:56,320 INFO L85 PathProgramCache]: Analyzing trace with hash 483120951, now seen corresponding path program 5 times [2022-02-10 23:58:56,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:56,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638160561] [2022-02-10 23:58:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:56,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:56,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:56,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638160561] [2022-02-10 23:58:56,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638160561] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:56,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763428724] [2022-02-10 23:58:56,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:58:56,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:56,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:56,374 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) [2022-02-10 23:58:56,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 23:58:56,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:58:56,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:56,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:58:56,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:56,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:56,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763428724] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:56,499 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:56,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 23:58:56,499 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343616732] [2022-02-10 23:58:56,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:56,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:56,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:56,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:56,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:56,500 INFO L87 Difference]: Start difference. First operand 236 states and 508 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 23:58:56,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:56,546 INFO L93 Difference]: Finished difference Result 324 states and 681 transitions. [2022-02-10 23:58:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 23:58:56,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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 [2022-02-10 23:58:56,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:56,548 INFO L225 Difference]: With dead ends: 324 [2022-02-10 23:58:56,548 INFO L226 Difference]: Without dead ends: 317 [2022-02-10 23:58:56,548 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:56,549 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 24 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:56,549 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 183 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:56,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-02-10 23:58:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 279. [2022-02-10 23:58:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 2.1870503597122304) internal successors, (608), 278 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 608 transitions. [2022-02-10 23:58:56,555 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 608 transitions. Word has length 21 [2022-02-10 23:58:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:56,555 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 608 transitions. [2022-02-10 23:58:56,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 23:58:56,555 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 608 transitions. [2022-02-10 23:58:56,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:58:56,556 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:56,556 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:56,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:56,771 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,SelfDestructingSolverStorable17 [2022-02-10 23:58:56,772 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:56,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:56,772 INFO L85 PathProgramCache]: Analyzing trace with hash -372543715, now seen corresponding path program 6 times [2022-02-10 23:58:56,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:56,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511224165] [2022-02-10 23:58:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:56,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:56,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:56,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511224165] [2022-02-10 23:58:56,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511224165] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:56,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620224493] [2022-02-10 23:58:56,797 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:58:56,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:56,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:56,798 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) [2022-02-10 23:58:56,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 23:58:56,818 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:58:56,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:56,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:58:56,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:56,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:56,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620224493] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:56,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:56,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-10 23:58:56,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990889616] [2022-02-10 23:58:56,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:56,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 23:58:56,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 23:58:56,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 23:58:56,934 INFO L87 Difference]: Start difference. First operand 279 states and 608 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:57,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:57,005 INFO L93 Difference]: Finished difference Result 576 states and 1249 transitions. [2022-02-10 23:58:57,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:58:57,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 23:58:57,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:57,007 INFO L225 Difference]: With dead ends: 576 [2022-02-10 23:58:57,007 INFO L226 Difference]: Without dead ends: 559 [2022-02-10 23:58:57,007 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-02-10 23:58:57,008 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 108 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:57,008 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 118 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-02-10 23:58:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 274. [2022-02-10 23:58:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.1904761904761907) internal successors, (598), 273 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 598 transitions. [2022-02-10 23:58:57,014 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 598 transitions. Word has length 24 [2022-02-10 23:58:57,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:57,014 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 598 transitions. [2022-02-10 23:58:57,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 598 transitions. [2022-02-10 23:58:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:58:57,015 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:57,015 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:57,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:57,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:57,231 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:57,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1770458263, now seen corresponding path program 7 times [2022-02-10 23:58:57,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:57,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795719921] [2022-02-10 23:58:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:57,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:57,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:57,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795719921] [2022-02-10 23:58:57,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795719921] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:57,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204876802] [2022-02-10 23:58:57,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:58:57,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:57,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:57,259 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) [2022-02-10 23:58:57,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 23:58:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:57,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:58:57,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:57,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:57,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204876802] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:57,373 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:57,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:58:57,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164567364] [2022-02-10 23:58:57,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:57,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:58:57,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:58:57,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:58:57,374 INFO L87 Difference]: Start difference. First operand 274 states and 598 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:57,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:57,583 INFO L93 Difference]: Finished difference Result 1294 states and 2763 transitions. [2022-02-10 23:58:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 23:58:57,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 23:58:57,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:57,588 INFO L225 Difference]: With dead ends: 1294 [2022-02-10 23:58:57,588 INFO L226 Difference]: Without dead ends: 1294 [2022-02-10 23:58:57,588 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:58:57,588 INFO L934 BasicCegarLoop]: 34 mSDtfsCounter, 181 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:57,589 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 199 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:57,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-02-10 23:58:57,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 593. [2022-02-10 23:58:57,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 2.310810810810811) internal successors, (1368), 592 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1368 transitions. [2022-02-10 23:58:57,608 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1368 transitions. Word has length 24 [2022-02-10 23:58:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:57,608 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 1368 transitions. [2022-02-10 23:58:57,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1368 transitions. [2022-02-10 23:58:57,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:58:57,609 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:57,609 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:57,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:57,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:57,826 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:57,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:57,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1748617791, now seen corresponding path program 8 times [2022-02-10 23:58:57,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:57,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128276550] [2022-02-10 23:58:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:57,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:57,866 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:57,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128276550] [2022-02-10 23:58:57,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128276550] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:57,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042551027] [2022-02-10 23:58:57,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:58:57,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:57,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:57,867 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) [2022-02-10 23:58:57,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 23:58:57,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:58:57,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:57,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:58:57,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:57,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:57,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042551027] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:57,982 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:57,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:58:57,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976681362] [2022-02-10 23:58:57,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:57,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:58:57,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:57,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:58:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:58:57,983 INFO L87 Difference]: Start difference. First operand 593 states and 1368 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:58,151 INFO L93 Difference]: Finished difference Result 1242 states and 2672 transitions. [2022-02-10 23:58:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 23:58:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 23:58:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:58,155 INFO L225 Difference]: With dead ends: 1242 [2022-02-10 23:58:58,155 INFO L226 Difference]: Without dead ends: 1236 [2022-02-10 23:58:58,155 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-02-10 23:58:58,155 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 231 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:58,156 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 192 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:58,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2022-02-10 23:58:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 596. [2022-02-10 23:58:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 595 states have (on average 2.299159663865546) internal successors, (1368), 595 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:58,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 1368 transitions. [2022-02-10 23:58:58,179 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 1368 transitions. Word has length 24 [2022-02-10 23:58:58,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:58,179 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 1368 transitions. [2022-02-10 23:58:58,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1368 transitions. [2022-02-10 23:58:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:58:58,181 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:58,181 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:58,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:58,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-02-10 23:58:58,397 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:58,397 INFO L85 PathProgramCache]: Analyzing trace with hash 276767273, now seen corresponding path program 9 times [2022-02-10 23:58:58,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:58,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20918109] [2022-02-10 23:58:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:58,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:58,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:58,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20918109] [2022-02-10 23:58:58,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20918109] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:58,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525959174] [2022-02-10 23:58:58,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:58:58,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:58,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:58,427 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) [2022-02-10 23:58:58,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:58:58,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:58,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:58:58,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:58,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 23:58:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:58,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:58,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525959174] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:58,557 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:58,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:58:58,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406060355] [2022-02-10 23:58:58,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:58,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:58:58,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:58,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:58:58,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:58:58,558 INFO L87 Difference]: Start difference. First operand 596 states and 1368 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:58,676 INFO L93 Difference]: Finished difference Result 1124 states and 2470 transitions. [2022-02-10 23:58:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 23:58:58,677 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 23:58:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:58,680 INFO L225 Difference]: With dead ends: 1124 [2022-02-10 23:58:58,680 INFO L226 Difference]: Without dead ends: 1112 [2022-02-10 23:58:58,680 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-02-10 23:58:58,681 INFO L934 BasicCegarLoop]: 28 mSDtfsCounter, 174 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:58,681 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 142 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-02-10 23:58:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 602. [2022-02-10 23:58:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 2.2945091514143097) internal successors, (1379), 601 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1379 transitions. [2022-02-10 23:58:58,694 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1379 transitions. Word has length 24 [2022-02-10 23:58:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:58,694 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1379 transitions. [2022-02-10 23:58:58,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1379 transitions. [2022-02-10 23:58:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:58:58,695 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:58,695 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:58,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:58,910 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,SelfDestructingSolverStorable21 [2022-02-10 23:58:58,911 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:58,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:58,911 INFO L85 PathProgramCache]: Analyzing trace with hash -375071755, now seen corresponding path program 10 times [2022-02-10 23:58:58,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:58,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712997116] [2022-02-10 23:58:58,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:58,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:58,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:58,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712997116] [2022-02-10 23:58:58,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712997116] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:58,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759160702] [2022-02-10 23:58:58,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:58:58,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:58,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:58,936 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) [2022-02-10 23:58:58,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 23:58:58,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:58:58,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:58,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:58:58,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:59,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:59,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759160702] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:59,052 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:59,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-10 23:58:59,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852939213] [2022-02-10 23:58:59,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:59,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 23:58:59,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 23:58:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 23:58:59,053 INFO L87 Difference]: Start difference. First operand 602 states and 1379 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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) [2022-02-10 23:58:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:59,144 INFO L93 Difference]: Finished difference Result 922 states and 2091 transitions. [2022-02-10 23:58:59,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:58:59,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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 24 [2022-02-10 23:58:59,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:59,147 INFO L225 Difference]: With dead ends: 922 [2022-02-10 23:58:59,147 INFO L226 Difference]: Without dead ends: 922 [2022-02-10 23:58:59,147 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-02-10 23:58:59,148 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 65 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:59,148 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 185 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:59,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-02-10 23:58:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 628. [2022-02-10 23:58:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 2.295055821371611) internal successors, (1439), 627 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1439 transitions. [2022-02-10 23:58:59,160 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1439 transitions. Word has length 24 [2022-02-10 23:58:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:59,161 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1439 transitions. [2022-02-10 23:58:59,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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) [2022-02-10 23:58:59,161 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1439 transitions. [2022-02-10 23:58:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:58:59,162 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:59,162 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:59,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:59,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:59,375 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2025870681, now seen corresponding path program 11 times [2022-02-10 23:58:59,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:59,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477461091] [2022-02-10 23:58:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:59,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:59,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477461091] [2022-02-10 23:58:59,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477461091] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:59,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846155863] [2022-02-10 23:58:59,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:58:59,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:59,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:59,403 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) [2022-02-10 23:58:59,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 23:58:59,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:58:59,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:59,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:58:59,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:59,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:59,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846155863] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:59,544 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:59,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:58:59,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662080057] [2022-02-10 23:58:59,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:59,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:58:59,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:59,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:58:59,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:58:59,545 INFO L87 Difference]: Start difference. First operand 628 states and 1439 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 23:58:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:59,672 INFO L93 Difference]: Finished difference Result 1006 states and 2185 transitions. [2022-02-10 23:58:59,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:58:59,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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 24 [2022-02-10 23:58:59,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:59,675 INFO L225 Difference]: With dead ends: 1006 [2022-02-10 23:58:59,675 INFO L226 Difference]: Without dead ends: 1006 [2022-02-10 23:58:59,675 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-02-10 23:58:59,676 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 74 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:59,676 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 213 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:59,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-02-10 23:58:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 739. [2022-02-10 23:58:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 2.3116531165311653) internal successors, (1706), 738 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1706 transitions. [2022-02-10 23:58:59,702 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1706 transitions. Word has length 24 [2022-02-10 23:58:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:59,702 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 1706 transitions. [2022-02-10 23:58:59,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 23:58:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1706 transitions. [2022-02-10 23:58:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:58:59,703 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:59,703 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:59,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:59,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:59,919 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:59,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:59,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2085599199, now seen corresponding path program 12 times [2022-02-10 23:58:59,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:59,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143564633] [2022-02-10 23:58:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:59,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:59,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:59,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143564633] [2022-02-10 23:58:59,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143564633] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:59,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202841584] [2022-02-10 23:58:59,948 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:58:59,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:59,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:59,949 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) [2022-02-10 23:58:59,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 23:58:59,967 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 23:58:59,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:59,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:58:59,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:00,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:00,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202841584] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:00,073 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:00,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:59:00,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701304141] [2022-02-10 23:59:00,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:00,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:59:00,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:00,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:59:00,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:59:00,074 INFO L87 Difference]: Start difference. First operand 739 states and 1706 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 23:59:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:00,281 INFO L93 Difference]: Finished difference Result 1383 states and 2995 transitions. [2022-02-10 23:59:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 23:59:00,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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 24 [2022-02-10 23:59:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:00,285 INFO L225 Difference]: With dead ends: 1383 [2022-02-10 23:59:00,285 INFO L226 Difference]: Without dead ends: 1383 [2022-02-10 23:59:00,285 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:59:00,286 INFO L934 BasicCegarLoop]: 50 mSDtfsCounter, 113 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:00,286 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 276 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-02-10 23:59:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 885. [2022-02-10 23:59:00,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 2.3450226244343892) internal successors, (2073), 884 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 2073 transitions. [2022-02-10 23:59:00,307 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 2073 transitions. Word has length 24 [2022-02-10 23:59:00,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:00,307 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 2073 transitions. [2022-02-10 23:59:00,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 23:59:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 2073 transitions. [2022-02-10 23:59:00,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:59:00,308 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:00,308 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:00,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:00,519 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,SelfDestructingSolverStorable24 [2022-02-10 23:59:00,519 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:00,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2063758727, now seen corresponding path program 13 times [2022-02-10 23:59:00,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:00,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687877664] [2022-02-10 23:59:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:00,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:00,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:00,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687877664] [2022-02-10 23:59:00,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687877664] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:00,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2699201] [2022-02-10 23:59:00,544 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:00,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:00,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:00,545 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) [2022-02-10 23:59:00,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 23:59:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:00,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:00,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:00,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:00,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2699201] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:00,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:00,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:59:00,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472321486] [2022-02-10 23:59:00,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:00,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:59:00,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:00,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:59:00,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:59:00,667 INFO L87 Difference]: Start difference. First operand 885 states and 2073 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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) [2022-02-10 23:59:00,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:00,797 INFO L93 Difference]: Finished difference Result 1212 states and 2678 transitions. [2022-02-10 23:59:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 23:59:00,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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 24 [2022-02-10 23:59:00,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:00,801 INFO L225 Difference]: With dead ends: 1212 [2022-02-10 23:59:00,801 INFO L226 Difference]: Without dead ends: 1206 [2022-02-10 23:59:00,801 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:59:00,801 INFO L934 BasicCegarLoop]: 58 mSDtfsCounter, 110 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:00,801 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 232 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-02-10 23:59:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 891. [2022-02-10 23:59:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 2.3348314606741574) internal successors, (2078), 890 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 2078 transitions. [2022-02-10 23:59:00,817 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 2078 transitions. Word has length 24 [2022-02-10 23:59:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:00,817 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 2078 transitions. [2022-02-10 23:59:00,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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) [2022-02-10 23:59:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 2078 transitions. [2022-02-10 23:59:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:59:00,818 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:00,818 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:00,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:01,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-10 23:59:01,031 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:01,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:01,032 INFO L85 PathProgramCache]: Analyzing trace with hash 571481013, now seen corresponding path program 14 times [2022-02-10 23:59:01,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:01,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73905899] [2022-02-10 23:59:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:01,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:01,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:01,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73905899] [2022-02-10 23:59:01,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73905899] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:01,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665275529] [2022-02-10 23:59:01,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:01,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:01,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:01,056 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) [2022-02-10 23:59:01,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 23:59:01,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:01,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:01,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:01,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:01,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:01,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:01,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665275529] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:01,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:01,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-10 23:59:01,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403220475] [2022-02-10 23:59:01,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:01,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:01,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:01,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:01,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:01,205 INFO L87 Difference]: Start difference. First operand 891 states and 2078 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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) [2022-02-10 23:59:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:01,403 INFO L93 Difference]: Finished difference Result 1543 states and 3411 transitions. [2022-02-10 23:59:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 23:59:01,404 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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 24 [2022-02-10 23:59:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:01,408 INFO L225 Difference]: With dead ends: 1543 [2022-02-10 23:59:01,408 INFO L226 Difference]: Without dead ends: 1543 [2022-02-10 23:59:01,408 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:59:01,409 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 88 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:01,409 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 318 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2022-02-10 23:59:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 941. [2022-02-10 23:59:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 940 states have (on average 2.3308510638297872) internal successors, (2191), 940 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2191 transitions. [2022-02-10 23:59:01,425 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2191 transitions. Word has length 24 [2022-02-10 23:59:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:01,425 INFO L470 AbstractCegarLoop]: Abstraction has 941 states and 2191 transitions. [2022-02-10 23:59:01,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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) [2022-02-10 23:59:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2191 transitions. [2022-02-10 23:59:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:59:01,428 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:01,428 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:01,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-02-10 23:59:01,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-10 23:59:01,643 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:01,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:01,644 INFO L85 PathProgramCache]: Analyzing trace with hash -525795659, now seen corresponding path program 15 times [2022-02-10 23:59:01,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:01,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648166715] [2022-02-10 23:59:01,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:01,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:01,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:01,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648166715] [2022-02-10 23:59:01,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648166715] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:01,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152047285] [2022-02-10 23:59:01,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:01,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:01,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:01,667 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) [2022-02-10 23:59:01,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 23:59:01,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:59:01,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:01,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:01,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:01,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:01,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152047285] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:01,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:01,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-10 23:59:01,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180748275] [2022-02-10 23:59:01,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:01,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:59:01,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:59:01,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:59:01,800 INFO L87 Difference]: Start difference. First operand 941 states and 2191 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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) [2022-02-10 23:59:01,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:01,975 INFO L93 Difference]: Finished difference Result 1894 states and 4281 transitions. [2022-02-10 23:59:01,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 23:59:01,975 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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 24 [2022-02-10 23:59:01,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:01,980 INFO L225 Difference]: With dead ends: 1894 [2022-02-10 23:59:01,980 INFO L226 Difference]: Without dead ends: 1894 [2022-02-10 23:59:01,980 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=321, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:59:01,981 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 128 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:01,981 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 189 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2022-02-10 23:59:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1324. [2022-02-10 23:59:02,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1323 states have (on average 2.3590325018896445) internal successors, (3121), 1323 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 3121 transitions. [2022-02-10 23:59:02,002 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 3121 transitions. Word has length 24 [2022-02-10 23:59:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:02,003 INFO L470 AbstractCegarLoop]: Abstraction has 1324 states and 3121 transitions. [2022-02-10 23:59:02,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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) [2022-02-10 23:59:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 3121 transitions. [2022-02-10 23:59:02,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:59:02,004 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:02,004 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:02,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:02,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:02,212 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash -503955187, now seen corresponding path program 16 times [2022-02-10 23:59:02,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:02,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931410280] [2022-02-10 23:59:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:02,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:02,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931410280] [2022-02-10 23:59:02,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931410280] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:02,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061157446] [2022-02-10 23:59:02,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:02,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:02,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:02,233 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) [2022-02-10 23:59:02,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 23:59:02,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:02,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:02,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:02,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:02,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:02,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061157446] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:02,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:02,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-10 23:59:02,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543759370] [2022-02-10 23:59:02,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:02,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:59:02,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:59:02,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:59:02,354 INFO L87 Difference]: Start difference. First operand 1324 states and 3121 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:02,515 INFO L93 Difference]: Finished difference Result 1813 states and 4106 transitions. [2022-02-10 23:59:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 23:59:02,516 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 23:59:02,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:02,520 INFO L225 Difference]: With dead ends: 1813 [2022-02-10 23:59:02,520 INFO L226 Difference]: Without dead ends: 1807 [2022-02-10 23:59:02,521 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=297, Unknown=0, NotChecked=0, Total=462 [2022-02-10 23:59:02,521 INFO L934 BasicCegarLoop]: 51 mSDtfsCounter, 142 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:02,521 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 221 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2022-02-10 23:59:02,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1097. [2022-02-10 23:59:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1096 states have (on average 2.3339416058394162) internal successors, (2558), 1096 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:02,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2558 transitions. [2022-02-10 23:59:02,537 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2558 transitions. Word has length 24 [2022-02-10 23:59:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:02,537 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 2558 transitions. [2022-02-10 23:59:02,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2558 transitions. [2022-02-10 23:59:02,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 23:59:02,539 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:02,539 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:02,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:02,751 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,SelfDestructingSolverStorable28 [2022-02-10 23:59:02,751 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1521429877, now seen corresponding path program 17 times [2022-02-10 23:59:02,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:02,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728343196] [2022-02-10 23:59:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:02,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:02,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:02,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728343196] [2022-02-10 23:59:02,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728343196] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:02,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488534288] [2022-02-10 23:59:02,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:02,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:02,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:02,781 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) [2022-02-10 23:59:02,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 23:59:02,800 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:59:02,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:02,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:02,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:02,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:02,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488534288] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:02,901 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:02,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-10 23:59:02,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013852574] [2022-02-10 23:59:02,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:02,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:02,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:02,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:02,902 INFO L87 Difference]: Start difference. First operand 1097 states and 2558 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:03,058 INFO L93 Difference]: Finished difference Result 1768 states and 4021 transitions. [2022-02-10 23:59:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 23:59:03,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 23:59:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:03,063 INFO L225 Difference]: With dead ends: 1768 [2022-02-10 23:59:03,063 INFO L226 Difference]: Without dead ends: 1747 [2022-02-10 23:59:03,063 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:59:03,065 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 103 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:03,065 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 243 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2022-02-10 23:59:03,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1327. [2022-02-10 23:59:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 2.3506787330316743) internal successors, (3117), 1326 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 3117 transitions. [2022-02-10 23:59:03,093 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 3117 transitions. Word has length 24 [2022-02-10 23:59:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:03,093 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 3117 transitions. [2022-02-10 23:59:03,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 3117 transitions. [2022-02-10 23:59:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 23:59:03,095 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:03,095 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:03,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:03,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:03,311 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:03,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:03,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1607702803, now seen corresponding path program 18 times [2022-02-10 23:59:03,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:03,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149034382] [2022-02-10 23:59:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:03,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:03,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:03,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149034382] [2022-02-10 23:59:03,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149034382] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:03,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336557968] [2022-02-10 23:59:03,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:03,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:03,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:03,340 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) [2022-02-10 23:59:03,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 23:59:03,360 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:59:03,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:03,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:03,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:03,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:03,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336557968] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:03,467 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:03,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-10 23:59:03,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185260631] [2022-02-10 23:59:03,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:03,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 23:59:03,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 23:59:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 23:59:03,468 INFO L87 Difference]: Start difference. First operand 1327 states and 3117 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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) [2022-02-10 23:59:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:03,569 INFO L93 Difference]: Finished difference Result 1554 states and 3589 transitions. [2022-02-10 23:59:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:03,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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 27 [2022-02-10 23:59:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:03,574 INFO L225 Difference]: With dead ends: 1554 [2022-02-10 23:59:03,574 INFO L226 Difference]: Without dead ends: 1554 [2022-02-10 23:59:03,574 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-02-10 23:59:03,574 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 74 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:03,575 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 167 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:03,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-02-10 23:59:03,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1386. [2022-02-10 23:59:03,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 2.339350180505415) internal successors, (3240), 1385 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 3240 transitions. [2022-02-10 23:59:03,603 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 3240 transitions. Word has length 27 [2022-02-10 23:59:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:03,603 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 3240 transitions. [2022-02-10 23:59:03,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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) [2022-02-10 23:59:03,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 3240 transitions. [2022-02-10 23:59:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 23:59:03,605 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:03,605 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:03,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:03,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:03,819 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:03,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash -238018327, now seen corresponding path program 19 times [2022-02-10 23:59:03,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:03,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055486285] [2022-02-10 23:59:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:03,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:03,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:03,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055486285] [2022-02-10 23:59:03,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055486285] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:03,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339276764] [2022-02-10 23:59:03,847 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:03,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:03,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:03,848 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) [2022-02-10 23:59:03,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 23:59:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:03,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:03,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:03,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:03,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339276764] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:03,963 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:03,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:59:03,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458069793] [2022-02-10 23:59:03,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:03,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:59:03,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:03,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:59:03,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:59:03,964 INFO L87 Difference]: Start difference. First operand 1386 states and 3240 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:04,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:04,134 INFO L93 Difference]: Finished difference Result 1939 states and 4388 transitions. [2022-02-10 23:59:04,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 23:59:04,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 23:59:04,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:04,138 INFO L225 Difference]: With dead ends: 1939 [2022-02-10 23:59:04,138 INFO L226 Difference]: Without dead ends: 1935 [2022-02-10 23:59:04,138 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2022-02-10 23:59:04,139 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 132 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:04,139 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 230 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:04,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2022-02-10 23:59:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1574. [2022-02-10 23:59:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1573 states have (on average 2.336935791481246) internal successors, (3676), 1573 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 3676 transitions. [2022-02-10 23:59:04,162 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 3676 transitions. Word has length 27 [2022-02-10 23:59:04,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:04,162 INFO L470 AbstractCegarLoop]: Abstraction has 1574 states and 3676 transitions. [2022-02-10 23:59:04,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:04,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 3676 transitions. [2022-02-10 23:59:04,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 23:59:04,164 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:04,164 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:04,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-02-10 23:59:04,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:04,379 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:04,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:04,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1945700819, now seen corresponding path program 20 times [2022-02-10 23:59:04,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:04,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695043583] [2022-02-10 23:59:04,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:04,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:04,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:04,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695043583] [2022-02-10 23:59:04,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695043583] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:04,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109867425] [2022-02-10 23:59:04,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:04,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:04,404 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) [2022-02-10 23:59:04,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 23:59:04,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:04,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:04,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:04,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:04,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:04,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109867425] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:04,523 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:04,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:59:04,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571935789] [2022-02-10 23:59:04,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:04,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:59:04,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:04,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:59:04,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:59:04,523 INFO L87 Difference]: Start difference. First operand 1574 states and 3676 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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) [2022-02-10 23:59:04,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:04,696 INFO L93 Difference]: Finished difference Result 2022 states and 4535 transitions. [2022-02-10 23:59:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 23:59:04,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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 27 [2022-02-10 23:59:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:04,703 INFO L225 Difference]: With dead ends: 2022 [2022-02-10 23:59:04,703 INFO L226 Difference]: Without dead ends: 2022 [2022-02-10 23:59:04,703 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:59:04,704 INFO L934 BasicCegarLoop]: 48 mSDtfsCounter, 144 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:04,704 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 216 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2022-02-10 23:59:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1577. [2022-02-10 23:59:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1576 states have (on average 2.329314720812183) internal successors, (3671), 1576 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 3671 transitions. [2022-02-10 23:59:04,739 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 3671 transitions. Word has length 27 [2022-02-10 23:59:04,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:04,739 INFO L470 AbstractCegarLoop]: Abstraction has 1577 states and 3671 transitions. [2022-02-10 23:59:04,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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) [2022-02-10 23:59:04,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 3671 transitions. [2022-02-10 23:59:04,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 23:59:04,742 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:04,742 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:04,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:04,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:04,955 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1898256749, now seen corresponding path program 21 times [2022-02-10 23:59:04,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:04,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709198151] [2022-02-10 23:59:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:04,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:04,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:04,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709198151] [2022-02-10 23:59:04,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709198151] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:04,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274463575] [2022-02-10 23:59:04,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:04,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:04,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:04,979 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) [2022-02-10 23:59:04,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 23:59:05,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:59:05,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:05,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:05,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:05,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:05,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274463575] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:05,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:05,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-10 23:59:05,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719930318] [2022-02-10 23:59:05,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:05,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:05,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:05,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:05,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:05,087 INFO L87 Difference]: Start difference. First operand 1577 states and 3671 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:05,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:05,269 INFO L93 Difference]: Finished difference Result 2543 states and 5771 transitions. [2022-02-10 23:59:05,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 23:59:05,269 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have 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 [2022-02-10 23:59:05,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:05,273 INFO L225 Difference]: With dead ends: 2543 [2022-02-10 23:59:05,274 INFO L226 Difference]: Without dead ends: 2513 [2022-02-10 23:59:05,274 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:59:05,274 INFO L934 BasicCegarLoop]: 34 mSDtfsCounter, 185 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:05,274 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 182 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:05,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-02-10 23:59:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 1992. [2022-02-10 23:59:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1991 states have (on average 2.3314917127071824) internal successors, (4642), 1991 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 4642 transitions. [2022-02-10 23:59:05,304 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 4642 transitions. Word has length 27 [2022-02-10 23:59:05,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:05,305 INFO L470 AbstractCegarLoop]: Abstraction has 1992 states and 4642 transitions. [2022-02-10 23:59:05,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 4642 transitions. [2022-02-10 23:59:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 23:59:05,307 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:05,307 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:05,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:05,519 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,SelfDestructingSolverStorable33 [2022-02-10 23:59:05,519 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:05,520 INFO L85 PathProgramCache]: Analyzing trace with hash -857043757, now seen corresponding path program 22 times [2022-02-10 23:59:05,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:05,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744527222] [2022-02-10 23:59:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:05,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:05,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:05,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744527222] [2022-02-10 23:59:05,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744527222] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:05,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781224537] [2022-02-10 23:59:05,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:05,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:05,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:05,541 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) [2022-02-10 23:59:05,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 23:59:05,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:05,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:05,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:05,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:05,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:05,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781224537] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:05,645 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:05,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-10 23:59:05,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227150585] [2022-02-10 23:59:05,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:05,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:59:05,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:05,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:59:05,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:59:05,646 INFO L87 Difference]: Start difference. First operand 1992 states and 4642 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:05,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:05,813 INFO L93 Difference]: Finished difference Result 2880 states and 6468 transitions. [2022-02-10 23:59:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 23:59:05,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 23:59:05,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:05,818 INFO L225 Difference]: With dead ends: 2880 [2022-02-10 23:59:05,818 INFO L226 Difference]: Without dead ends: 2880 [2022-02-10 23:59:05,818 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=321, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:59:05,819 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 136 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:05,820 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 199 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:05,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2022-02-10 23:59:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2397. [2022-02-10 23:59:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2396 states have (on average 2.30550918196995) internal successors, (5524), 2396 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:05,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 5524 transitions. [2022-02-10 23:59:05,860 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 5524 transitions. Word has length 27 [2022-02-10 23:59:05,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:05,860 INFO L470 AbstractCegarLoop]: Abstraction has 2397 states and 5524 transitions. [2022-02-10 23:59:05,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:05,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 5524 transitions. [2022-02-10 23:59:05,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 23:59:05,863 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:05,863 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:05,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-10 23:59:06,079 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,SelfDestructingSolverStorable34 [2022-02-10 23:59:06,080 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:06,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:06,080 INFO L85 PathProgramCache]: Analyzing trace with hash 379799477, now seen corresponding path program 23 times [2022-02-10 23:59:06,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:06,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548819644] [2022-02-10 23:59:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:06,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:06,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:06,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548819644] [2022-02-10 23:59:06,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548819644] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:06,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39901501] [2022-02-10 23:59:06,108 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:06,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:06,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:06,109 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) [2022-02-10 23:59:06,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 23:59:06,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:59:06,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:06,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:06,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:06,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:06,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39901501] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:06,221 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:06,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-10 23:59:06,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530537310] [2022-02-10 23:59:06,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:06,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 23:59:06,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:06,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 23:59:06,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 23:59:06,223 INFO L87 Difference]: Start difference. First operand 2397 states and 5524 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:06,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:06,298 INFO L93 Difference]: Finished difference Result 2970 states and 6742 transitions. [2022-02-10 23:59:06,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:06,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have 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 [2022-02-10 23:59:06,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:06,302 INFO L225 Difference]: With dead ends: 2970 [2022-02-10 23:59:06,303 INFO L226 Difference]: Without dead ends: 2954 [2022-02-10 23:59:06,303 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-02-10 23:59:06,303 INFO L934 BasicCegarLoop]: 33 mSDtfsCounter, 67 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:06,303 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 157 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:59:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2022-02-10 23:59:06,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2397. [2022-02-10 23:59:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2396 states have (on average 2.305091819699499) internal successors, (5523), 2396 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 5523 transitions. [2022-02-10 23:59:06,335 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 5523 transitions. Word has length 27 [2022-02-10 23:59:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:06,335 INFO L470 AbstractCegarLoop]: Abstraction has 2397 states and 5523 transitions. [2022-02-10 23:59:06,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 5523 transitions. [2022-02-10 23:59:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 23:59:06,338 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:06,339 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:06,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:06,551 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,SelfDestructingSolverStorable35 [2022-02-10 23:59:06,551 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:06,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2101163599, now seen corresponding path program 24 times [2022-02-10 23:59:06,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:06,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323677023] [2022-02-10 23:59:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:06,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:06,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:06,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323677023] [2022-02-10 23:59:06,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323677023] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:06,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234443236] [2022-02-10 23:59:06,578 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:06,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:06,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:06,580 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) [2022-02-10 23:59:06,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 23:59:06,601 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:59:06,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:06,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:06,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:06,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:06,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234443236] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:06,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:06,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:59:06,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148363265] [2022-02-10 23:59:06,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:06,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:59:06,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:06,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:59:06,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:59:06,698 INFO L87 Difference]: Start difference. First operand 2397 states and 5523 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 23:59:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:06,847 INFO L93 Difference]: Finished difference Result 3017 states and 6817 transitions. [2022-02-10 23:59:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 23:59:06,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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 27 [2022-02-10 23:59:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:06,852 INFO L225 Difference]: With dead ends: 3017 [2022-02-10 23:59:06,852 INFO L226 Difference]: Without dead ends: 3003 [2022-02-10 23:59:06,852 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:59:06,853 INFO L934 BasicCegarLoop]: 38 mSDtfsCounter, 116 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:06,853 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 170 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2022-02-10 23:59:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 2499. [2022-02-10 23:59:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2498 states have (on average 2.310648518815052) internal successors, (5772), 2498 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:06,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 5772 transitions. [2022-02-10 23:59:06,884 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 5772 transitions. Word has length 27 [2022-02-10 23:59:06,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:06,884 INFO L470 AbstractCegarLoop]: Abstraction has 2499 states and 5772 transitions. [2022-02-10 23:59:06,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 23:59:06,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 5772 transitions. [2022-02-10 23:59:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 23:59:06,886 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:06,887 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:06,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:07,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:07,099 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:07,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:07,100 INFO L85 PathProgramCache]: Analyzing trace with hash 196866353, now seen corresponding path program 25 times [2022-02-10 23:59:07,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:07,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065906556] [2022-02-10 23:59:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:07,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:07,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065906556] [2022-02-10 23:59:07,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065906556] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:07,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965729088] [2022-02-10 23:59:07,125 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:07,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:07,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:07,126 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) [2022-02-10 23:59:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:07,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:07,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:07,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 23:59:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:07,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:07,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965729088] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:07,253 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:07,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:59:07,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465434505] [2022-02-10 23:59:07,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:07,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:59:07,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:59:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:59:07,254 INFO L87 Difference]: Start difference. First operand 2499 states and 5772 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 23:59:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:07,447 INFO L93 Difference]: Finished difference Result 3496 states and 7909 transitions. [2022-02-10 23:59:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 23:59:07,448 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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 27 [2022-02-10 23:59:07,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:07,453 INFO L225 Difference]: With dead ends: 3496 [2022-02-10 23:59:07,453 INFO L226 Difference]: Without dead ends: 3492 [2022-02-10 23:59:07,453 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-02-10 23:59:07,453 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 140 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:07,454 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 231 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-02-10 23:59:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 2938. [2022-02-10 23:59:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 2.306775621382363) internal successors, (6775), 2937 states have internal predecessors, (6775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 6775 transitions. [2022-02-10 23:59:07,506 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 6775 transitions. Word has length 27 [2022-02-10 23:59:07,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:07,506 INFO L470 AbstractCegarLoop]: Abstraction has 2938 states and 6775 transitions. [2022-02-10 23:59:07,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 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) [2022-02-10 23:59:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 6775 transitions. [2022-02-10 23:59:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 23:59:07,508 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:07,508 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:07,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:07,723 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,SelfDestructingSolverStorable37 [2022-02-10 23:59:07,723 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:07,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:07,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1510816139, now seen corresponding path program 26 times [2022-02-10 23:59:07,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:07,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901056840] [2022-02-10 23:59:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:07,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:07,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:07,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901056840] [2022-02-10 23:59:07,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901056840] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:07,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996100184] [2022-02-10 23:59:07,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:07,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:07,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:07,749 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) [2022-02-10 23:59:07,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 23:59:07,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:07,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:07,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:59:07,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:07,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:07,885 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996100184] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:07,885 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:07,885 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 23:59:07,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053214381] [2022-02-10 23:59:07,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:07,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:59:07,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:59:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:59:07,886 INFO L87 Difference]: Start difference. First operand 2938 states and 6775 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:08,069 INFO L93 Difference]: Finished difference Result 3490 states and 7752 transitions. [2022-02-10 23:59:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 23:59:08,069 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have 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 [2022-02-10 23:59:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:08,073 INFO L225 Difference]: With dead ends: 3490 [2022-02-10 23:59:08,074 INFO L226 Difference]: Without dead ends: 3487 [2022-02-10 23:59:08,074 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:59:08,074 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 171 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:08,074 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 221 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2022-02-10 23:59:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 2944. [2022-02-10 23:59:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 2943 states have (on average 2.2748895684675503) internal successors, (6695), 2943 states have internal predecessors, (6695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 6695 transitions. [2022-02-10 23:59:08,118 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 6695 transitions. Word has length 27 [2022-02-10 23:59:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:08,118 INFO L470 AbstractCegarLoop]: Abstraction has 2944 states and 6695 transitions. [2022-02-10 23:59:08,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:08,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 6695 transitions. [2022-02-10 23:59:08,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 23:59:08,121 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:08,121 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:08,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:08,335 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,SelfDestructingSolverStorable38 [2022-02-10 23:59:08,335 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:08,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:08,336 INFO L85 PathProgramCache]: Analyzing trace with hash 972755905, now seen corresponding path program 27 times [2022-02-10 23:59:08,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:08,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079932471] [2022-02-10 23:59:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:08,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:08,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:08,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079932471] [2022-02-10 23:59:08,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079932471] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:08,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548986045] [2022-02-10 23:59:08,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:08,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:08,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:08,418 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) [2022-02-10 23:59:08,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 23:59:08,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:59:08,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:08,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 23:59:08,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:08,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:08,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548986045] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:08,608 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:08,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 23:59:08,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430318191] [2022-02-10 23:59:08,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:08,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:08,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:08,609 INFO L87 Difference]: Start difference. First operand 2944 states and 6695 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:08,723 INFO L93 Difference]: Finished difference Result 3720 states and 8423 transitions. [2022-02-10 23:59:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:08,724 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 23:59:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:08,728 INFO L225 Difference]: With dead ends: 3720 [2022-02-10 23:59:08,728 INFO L226 Difference]: Without dead ends: 3699 [2022-02-10 23:59:08,728 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:08,729 INFO L934 BasicCegarLoop]: 63 mSDtfsCounter, 58 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:08,729 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 556 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:08,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-02-10 23:59:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3214. [2022-02-10 23:59:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3213 states have (on average 2.274821039526922) internal successors, (7309), 3213 states have internal predecessors, (7309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 7309 transitions. [2022-02-10 23:59:08,768 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 7309 transitions. Word has length 30 [2022-02-10 23:59:08,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:08,768 INFO L470 AbstractCegarLoop]: Abstraction has 3214 states and 7309 transitions. [2022-02-10 23:59:08,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:08,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 7309 transitions. [2022-02-10 23:59:08,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 23:59:08,771 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:08,772 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:08,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:08,987 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,SelfDestructingSolverStorable39 [2022-02-10 23:59:08,987 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:08,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:08,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2094722923, now seen corresponding path program 28 times [2022-02-10 23:59:08,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:08,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074765885] [2022-02-10 23:59:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:08,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:09,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:09,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074765885] [2022-02-10 23:59:09,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074765885] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:09,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127243127] [2022-02-10 23:59:09,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:09,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:09,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:09,083 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) [2022-02-10 23:59:09,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 23:59:09,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:09,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:09,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 23:59:09,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:09,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:09,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127243127] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:09,272 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:09,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 23:59:09,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014118240] [2022-02-10 23:59:09,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:09,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:09,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:09,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:09,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:09,273 INFO L87 Difference]: Start difference. First operand 3214 states and 7309 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:09,393 INFO L93 Difference]: Finished difference Result 4297 states and 9775 transitions. [2022-02-10 23:59:09,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:09,393 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 23:59:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:09,397 INFO L225 Difference]: With dead ends: 4297 [2022-02-10 23:59:09,398 INFO L226 Difference]: Without dead ends: 4272 [2022-02-10 23:59:09,398 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:09,398 INFO L934 BasicCegarLoop]: 60 mSDtfsCounter, 49 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:09,398 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 531 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2022-02-10 23:59:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 3898. [2022-02-10 23:59:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 3897 states have (on average 2.2894534257120864) internal successors, (8922), 3897 states have internal predecessors, (8922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 8922 transitions. [2022-02-10 23:59:09,445 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 8922 transitions. Word has length 30 [2022-02-10 23:59:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:09,446 INFO L470 AbstractCegarLoop]: Abstraction has 3898 states and 8922 transitions. [2022-02-10 23:59:09,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 8922 transitions. [2022-02-10 23:59:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 23:59:09,449 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:09,450 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:09,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:09,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:09,665 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:09,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:09,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1149127211, now seen corresponding path program 29 times [2022-02-10 23:59:09,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:09,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56080960] [2022-02-10 23:59:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:09,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:09,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:09,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56080960] [2022-02-10 23:59:09,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56080960] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:09,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45634868] [2022-02-10 23:59:09,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:09,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:09,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:09,736 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) [2022-02-10 23:59:09,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 23:59:09,754 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:59:09,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:09,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 23:59:09,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:09,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:09,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45634868] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:09,926 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:09,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 23:59:09,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186495438] [2022-02-10 23:59:09,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:09,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:09,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:09,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:09,931 INFO L87 Difference]: Start difference. First operand 3898 states and 8922 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:10,034 INFO L93 Difference]: Finished difference Result 5357 states and 12291 transitions. [2022-02-10 23:59:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:10,034 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 23:59:10,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:10,052 INFO L225 Difference]: With dead ends: 5357 [2022-02-10 23:59:10,052 INFO L226 Difference]: Without dead ends: 5330 [2022-02-10 23:59:10,052 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:10,053 INFO L934 BasicCegarLoop]: 59 mSDtfsCounter, 47 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:10,053 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 522 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5330 states. [2022-02-10 23:59:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5330 to 4961. [2022-02-10 23:59:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4961 states, 4960 states have (on average 2.3080645161290323) internal successors, (11448), 4960 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4961 states to 4961 states and 11448 transitions. [2022-02-10 23:59:10,103 INFO L78 Accepts]: Start accepts. Automaton has 4961 states and 11448 transitions. Word has length 30 [2022-02-10 23:59:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:10,103 INFO L470 AbstractCegarLoop]: Abstraction has 4961 states and 11448 transitions. [2022-02-10 23:59:10,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4961 states and 11448 transitions. [2022-02-10 23:59:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 23:59:10,108 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:10,108 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:10,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:10,315 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,SelfDestructingSolverStorable41 [2022-02-10 23:59:10,315 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:10,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2113851447, now seen corresponding path program 30 times [2022-02-10 23:59:10,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:10,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291242929] [2022-02-10 23:59:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:10,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:10,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:10,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291242929] [2022-02-10 23:59:10,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291242929] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:10,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777364920] [2022-02-10 23:59:10,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:10,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:10,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:10,394 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) [2022-02-10 23:59:10,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 23:59:10,413 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:59:10,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:10,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 23:59:10,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:10,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:10,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777364920] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:10,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:10,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 23:59:10,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591750081] [2022-02-10 23:59:10,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:10,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:10,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:10,596 INFO L87 Difference]: Start difference. First operand 4961 states and 11448 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:10,715 INFO L93 Difference]: Finished difference Result 6762 states and 15647 transitions. [2022-02-10 23:59:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:10,716 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 23:59:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:10,722 INFO L225 Difference]: With dead ends: 6762 [2022-02-10 23:59:10,722 INFO L226 Difference]: Without dead ends: 6733 [2022-02-10 23:59:10,723 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:10,723 INFO L934 BasicCegarLoop]: 58 mSDtfsCounter, 45 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:10,723 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 513 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:10,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2022-02-10 23:59:10,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 6369. [2022-02-10 23:59:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6369 states, 6368 states have (on average 2.326319095477387) internal successors, (14814), 6368 states have internal predecessors, (14814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6369 states to 6369 states and 14814 transitions. [2022-02-10 23:59:10,795 INFO L78 Accepts]: Start accepts. Automaton has 6369 states and 14814 transitions. Word has length 30 [2022-02-10 23:59:10,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:10,795 INFO L470 AbstractCegarLoop]: Abstraction has 6369 states and 14814 transitions. [2022-02-10 23:59:10,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 6369 states and 14814 transitions. [2022-02-10 23:59:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 23:59:10,801 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:10,801 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:10,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-10 23:59:11,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:11,008 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:11,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1043518873, now seen corresponding path program 31 times [2022-02-10 23:59:11,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:11,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973945845] [2022-02-10 23:59:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:11,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:11,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:11,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973945845] [2022-02-10 23:59:11,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973945845] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:11,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105399903] [2022-02-10 23:59:11,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:11,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:11,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:11,091 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) [2022-02-10 23:59:11,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 23:59:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:11,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 23:59:11,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:11,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:11,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105399903] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:11,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:11,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 23:59:11,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896464509] [2022-02-10 23:59:11,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:11,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:11,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:11,288 INFO L87 Difference]: Start difference. First operand 6369 states and 14814 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:11,405 INFO L93 Difference]: Finished difference Result 8644 states and 20177 transitions. [2022-02-10 23:59:11,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:11,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 23:59:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:11,415 INFO L225 Difference]: With dead ends: 8644 [2022-02-10 23:59:11,416 INFO L226 Difference]: Without dead ends: 8611 [2022-02-10 23:59:11,416 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:11,416 INFO L934 BasicCegarLoop]: 61 mSDtfsCounter, 51 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:11,416 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 537 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:11,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8611 states. [2022-02-10 23:59:11,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8611 to 8039. [2022-02-10 23:59:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8039 states, 8038 states have (on average 2.3443642697188354) internal successors, (18844), 8038 states have internal predecessors, (18844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8039 states to 8039 states and 18844 transitions. [2022-02-10 23:59:11,531 INFO L78 Accepts]: Start accepts. Automaton has 8039 states and 18844 transitions. Word has length 30 [2022-02-10 23:59:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:11,531 INFO L470 AbstractCegarLoop]: Abstraction has 8039 states and 18844 transitions. [2022-02-10 23:59:11,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:11,531 INFO L276 IsEmpty]: Start isEmpty. Operand 8039 states and 18844 transitions. [2022-02-10 23:59:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 23:59:11,538 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:11,538 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:11,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-02-10 23:59:11,738 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,SelfDestructingSolverStorable43 [2022-02-10 23:59:11,738 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:11,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash 17762787, now seen corresponding path program 32 times [2022-02-10 23:59:11,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:11,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314755614] [2022-02-10 23:59:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:11,808 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:11,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314755614] [2022-02-10 23:59:11,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314755614] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:11,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925902248] [2022-02-10 23:59:11,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:11,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:11,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:11,810 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) [2022-02-10 23:59:11,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 23:59:11,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:11,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:11,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 23:59:11,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:11,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:11,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:12,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925902248] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:12,000 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:12,000 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 23:59:12,000 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242131347] [2022-02-10 23:59:12,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:12,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:12,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:12,001 INFO L87 Difference]: Start difference. First operand 8039 states and 18844 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:12,105 INFO L93 Difference]: Finished difference Result 10037 states and 23468 transitions. [2022-02-10 23:59:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:12,105 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 23:59:12,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:12,141 INFO L225 Difference]: With dead ends: 10037 [2022-02-10 23:59:12,142 INFO L226 Difference]: Without dead ends: 10013 [2022-02-10 23:59:12,142 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:12,142 INFO L934 BasicCegarLoop]: 57 mSDtfsCounter, 42 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:12,142 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 502 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10013 states. [2022-02-10 23:59:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10013 to 9896. [2022-02-10 23:59:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9896 states, 9895 states have (on average 2.346437594744821) internal successors, (23218), 9895 states have internal predecessors, (23218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9896 states to 9896 states and 23218 transitions. [2022-02-10 23:59:12,305 INFO L78 Accepts]: Start accepts. Automaton has 9896 states and 23218 transitions. Word has length 30 [2022-02-10 23:59:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:12,305 INFO L470 AbstractCegarLoop]: Abstraction has 9896 states and 23218 transitions. [2022-02-10 23:59:12,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 9896 states and 23218 transitions. [2022-02-10 23:59:12,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 23:59:12,313 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:12,313 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:12,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:12,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:12,514 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:12,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:12,514 INFO L85 PathProgramCache]: Analyzing trace with hash 610130125, now seen corresponding path program 33 times [2022-02-10 23:59:12,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:12,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350308228] [2022-02-10 23:59:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:12,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:12,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:12,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350308228] [2022-02-10 23:59:12,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350308228] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:12,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639989516] [2022-02-10 23:59:12,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:12,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:12,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:12,591 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) [2022-02-10 23:59:12,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 23:59:12,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:59:12,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:12,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 23:59:12,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:12,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:12,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639989516] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:12,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:12,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 23:59:12,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041148815] [2022-02-10 23:59:12,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:12,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:12,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:12,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:12,783 INFO L87 Difference]: Start difference. First operand 9896 states and 23218 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:12,891 INFO L93 Difference]: Finished difference Result 11991 states and 28097 transitions. [2022-02-10 23:59:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:12,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 23:59:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:12,907 INFO L225 Difference]: With dead ends: 11991 [2022-02-10 23:59:12,907 INFO L226 Difference]: Without dead ends: 11967 [2022-02-10 23:59:12,907 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:12,907 INFO L934 BasicCegarLoop]: 57 mSDtfsCounter, 40 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:12,907 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 494 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11967 states. [2022-02-10 23:59:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11967 to 11846. [2022-02-10 23:59:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11846 states, 11845 states have (on average 2.350443224989447) internal successors, (27841), 11845 states have internal predecessors, (27841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11846 states to 11846 states and 27841 transitions. [2022-02-10 23:59:13,087 INFO L78 Accepts]: Start accepts. Automaton has 11846 states and 27841 transitions. Word has length 30 [2022-02-10 23:59:13,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:13,087 INFO L470 AbstractCegarLoop]: Abstraction has 11846 states and 27841 transitions. [2022-02-10 23:59:13,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 11846 states and 27841 transitions. [2022-02-10 23:59:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 23:59:13,098 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:13,098 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:13,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-10 23:59:13,299 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,SelfDestructingSolverStorable45 [2022-02-10 23:59:13,299 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:13,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash 219089857, now seen corresponding path program 34 times [2022-02-10 23:59:13,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:13,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448536880] [2022-02-10 23:59:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:13,374 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:13,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448536880] [2022-02-10 23:59:13,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448536880] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:13,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274759928] [2022-02-10 23:59:13,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:13,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:13,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:13,375 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) [2022-02-10 23:59:13,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 23:59:13,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:13,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:13,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 23:59:13,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:13,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:13,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274759928] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:13,563 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:13,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 23:59:13,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45738283] [2022-02-10 23:59:13,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:13,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:13,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:13,564 INFO L87 Difference]: Start difference. First operand 11846 states and 27841 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:13,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:13,720 INFO L93 Difference]: Finished difference Result 14049 states and 33004 transitions. [2022-02-10 23:59:13,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:13,728 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 23:59:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:13,749 INFO L225 Difference]: With dead ends: 14049 [2022-02-10 23:59:13,749 INFO L226 Difference]: Without dead ends: 14025 [2022-02-10 23:59:13,749 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:13,749 INFO L934 BasicCegarLoop]: 57 mSDtfsCounter, 38 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:13,750 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 486 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14025 states. [2022-02-10 23:59:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14025 to 13900. [2022-02-10 23:59:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13900 states, 13899 states have (on average 2.355709043816102) internal successors, (32742), 13899 states have internal predecessors, (32742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13900 states to 13900 states and 32742 transitions. [2022-02-10 23:59:13,990 INFO L78 Accepts]: Start accepts. Automaton has 13900 states and 32742 transitions. Word has length 30 [2022-02-10 23:59:13,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:13,990 INFO L470 AbstractCegarLoop]: Abstraction has 13900 states and 32742 transitions. [2022-02-10 23:59:13,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 13900 states and 32742 transitions. [2022-02-10 23:59:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 23:59:14,002 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:14,002 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:14,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:14,218 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,SelfDestructingSolverStorable46 [2022-02-10 23:59:14,218 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash 2143360401, now seen corresponding path program 35 times [2022-02-10 23:59:14,218 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:14,218 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136316056] [2022-02-10 23:59:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:14,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:14,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136316056] [2022-02-10 23:59:14,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136316056] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:14,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861201793] [2022-02-10 23:59:14,307 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:14,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:14,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:14,308 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) [2022-02-10 23:59:14,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 23:59:14,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:59:14,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:14,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 23:59:14,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:14,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:14,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861201793] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:14,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:14,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 23:59:14,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424275501] [2022-02-10 23:59:14,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:14,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:59:14,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:14,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:59:14,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:14,551 INFO L87 Difference]: Start difference. First operand 13900 states and 32742 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:14,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:14,687 INFO L93 Difference]: Finished difference Result 16374 states and 38585 transitions. [2022-02-10 23:59:14,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 23:59:14,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-10 23:59:14,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:14,712 INFO L225 Difference]: With dead ends: 16374 [2022-02-10 23:59:14,712 INFO L226 Difference]: Without dead ends: 16350 [2022-02-10 23:59:14,712 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:59:14,713 INFO L934 BasicCegarLoop]: 60 mSDtfsCounter, 44 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:14,713 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 508 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:14,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16350 states. [2022-02-10 23:59:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16350 to 16192. [2022-02-10 23:59:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16192 states, 16191 states have (on average 2.3634735346797604) internal successors, (38267), 16191 states have internal predecessors, (38267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16192 states to 16192 states and 38267 transitions. [2022-02-10 23:59:15,073 INFO L78 Accepts]: Start accepts. Automaton has 16192 states and 38267 transitions. Word has length 30 [2022-02-10 23:59:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:15,073 INFO L470 AbstractCegarLoop]: Abstraction has 16192 states and 38267 transitions. [2022-02-10 23:59:15,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 16192 states and 38267 transitions. [2022-02-10 23:59:15,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:15,092 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:15,092 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:15,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:15,300 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,SelfDestructingSolverStorable47 [2022-02-10 23:59:15,300 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:15,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash 305689171, now seen corresponding path program 36 times [2022-02-10 23:59:15,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:15,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742171944] [2022-02-10 23:59:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:15,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:15,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:15,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742171944] [2022-02-10 23:59:15,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742171944] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:15,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583494353] [2022-02-10 23:59:15,332 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:15,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:15,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:15,333 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) [2022-02-10 23:59:15,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 23:59:15,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:59:15,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:15,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:15,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:15,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:15,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583494353] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:15,546 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:15,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 23:59:15,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762634816] [2022-02-10 23:59:15,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:15,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 23:59:15,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 23:59:15,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:59:15,546 INFO L87 Difference]: Start difference. First operand 16192 states and 38267 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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) [2022-02-10 23:59:15,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:15,704 INFO L93 Difference]: Finished difference Result 27357 states and 64330 transitions. [2022-02-10 23:59:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:59:15,704 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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 33 [2022-02-10 23:59:15,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:15,751 INFO L225 Difference]: With dead ends: 27357 [2022-02-10 23:59:15,751 INFO L226 Difference]: Without dead ends: 27331 [2022-02-10 23:59:15,751 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-02-10 23:59:15,751 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 167 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:15,752 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 152 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:59:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27331 states. [2022-02-10 23:59:16,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27331 to 16187. [2022-02-10 23:59:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16187 states, 16186 states have (on average 2.363585814901767) internal successors, (38257), 16186 states have internal predecessors, (38257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16187 states to 16187 states and 38257 transitions. [2022-02-10 23:59:16,158 INFO L78 Accepts]: Start accepts. Automaton has 16187 states and 38257 transitions. Word has length 33 [2022-02-10 23:59:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:16,158 INFO L470 AbstractCegarLoop]: Abstraction has 16187 states and 38257 transitions. [2022-02-10 23:59:16,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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) [2022-02-10 23:59:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 16187 states and 38257 transitions. [2022-02-10 23:59:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:16,180 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:16,180 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:16,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:16,380 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,SelfDestructingSolverStorable48 [2022-02-10 23:59:16,381 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1165188695, now seen corresponding path program 37 times [2022-02-10 23:59:16,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:16,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862451355] [2022-02-10 23:59:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:16,422 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:16,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862451355] [2022-02-10 23:59:16,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862451355] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:16,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271834616] [2022-02-10 23:59:16,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:16,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:16,423 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) [2022-02-10 23:59:16,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 23:59:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:16,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:16,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:16,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:16,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271834616] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:16,584 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:16,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:16,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81406337] [2022-02-10 23:59:16,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:16,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:16,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:16,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:16,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:16,585 INFO L87 Difference]: Start difference. First operand 16187 states and 38257 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 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) [2022-02-10 23:59:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:17,138 INFO L93 Difference]: Finished difference Result 34343 states and 80774 transitions. [2022-02-10 23:59:17,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 23:59:17,139 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 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 33 [2022-02-10 23:59:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:17,211 INFO L225 Difference]: With dead ends: 34343 [2022-02-10 23:59:17,212 INFO L226 Difference]: Without dead ends: 34341 [2022-02-10 23:59:17,212 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=578, Invalid=1314, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 23:59:17,213 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 323 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:17,213 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 298 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:59:17,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34341 states. [2022-02-10 23:59:17,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34341 to 24108. [2022-02-10 23:59:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24108 states, 24107 states have (on average 2.375865931057369) internal successors, (57275), 24107 states have internal predecessors, (57275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24108 states to 24108 states and 57275 transitions. [2022-02-10 23:59:17,942 INFO L78 Accepts]: Start accepts. Automaton has 24108 states and 57275 transitions. Word has length 33 [2022-02-10 23:59:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:17,942 INFO L470 AbstractCegarLoop]: Abstraction has 24108 states and 57275 transitions. [2022-02-10 23:59:17,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 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) [2022-02-10 23:59:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 24108 states and 57275 transitions. [2022-02-10 23:59:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:17,963 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:17,963 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:17,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:18,166 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,SelfDestructingSolverStorable49 [2022-02-10 23:59:18,167 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:18,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:18,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1143348223, now seen corresponding path program 38 times [2022-02-10 23:59:18,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:18,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185766916] [2022-02-10 23:59:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:18,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:18,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:18,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185766916] [2022-02-10 23:59:18,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185766916] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:18,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104535187] [2022-02-10 23:59:18,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:18,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:18,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:18,197 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) [2022-02-10 23:59:18,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 23:59:18,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:18,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:18,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:18,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:18,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:18,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104535187] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:18,345 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:18,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:18,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914599833] [2022-02-10 23:59:18,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:18,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:18,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:18,346 INFO L87 Difference]: Start difference. First operand 24108 states and 57275 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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) [2022-02-10 23:59:18,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:18,751 INFO L93 Difference]: Finished difference Result 34130 states and 80381 transitions. [2022-02-10 23:59:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 23:59:18,751 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 33 [2022-02-10 23:59:18,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:18,818 INFO L225 Difference]: With dead ends: 34130 [2022-02-10 23:59:18,818 INFO L226 Difference]: Without dead ends: 34124 [2022-02-10 23:59:18,818 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 23:59:18,819 INFO L934 BasicCegarLoop]: 38 mSDtfsCounter, 356 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:18,819 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 287 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34124 states. [2022-02-10 23:59:19,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34124 to 21543. [2022-02-10 23:59:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21543 states, 21542 states have (on average 2.3611549531148452) internal successors, (50864), 21542 states have internal predecessors, (50864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21543 states to 21543 states and 50864 transitions. [2022-02-10 23:59:19,447 INFO L78 Accepts]: Start accepts. Automaton has 21543 states and 50864 transitions. Word has length 33 [2022-02-10 23:59:19,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:19,448 INFO L470 AbstractCegarLoop]: Abstraction has 21543 states and 50864 transitions. [2022-02-10 23:59:19,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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) [2022-02-10 23:59:19,448 INFO L276 IsEmpty]: Start isEmpty. Operand 21543 states and 50864 transitions. [2022-02-10 23:59:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:19,473 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:19,473 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:19,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:19,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:19,687 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash 882036841, now seen corresponding path program 39 times [2022-02-10 23:59:19,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:19,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926210408] [2022-02-10 23:59:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:19,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:19,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:19,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926210408] [2022-02-10 23:59:19,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926210408] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:19,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027392922] [2022-02-10 23:59:19,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:19,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:19,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:19,728 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) [2022-02-10 23:59:19,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 23:59:19,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:59:19,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:19,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:19,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:19,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:19,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027392922] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:19,959 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:19,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:19,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038139293] [2022-02-10 23:59:19,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:19,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:19,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:19,960 INFO L87 Difference]: Start difference. First operand 21543 states and 50864 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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) [2022-02-10 23:59:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:20,304 INFO L93 Difference]: Finished difference Result 33931 states and 79825 transitions. [2022-02-10 23:59:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 23:59:20,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 33 [2022-02-10 23:59:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:20,378 INFO L225 Difference]: With dead ends: 33931 [2022-02-10 23:59:20,378 INFO L226 Difference]: Without dead ends: 33910 [2022-02-10 23:59:20,379 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=782, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 23:59:20,381 INFO L934 BasicCegarLoop]: 34 mSDtfsCounter, 409 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:20,381 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 208 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33910 states. [2022-02-10 23:59:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33910 to 22539. [2022-02-10 23:59:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22539 states, 22538 states have (on average 2.3526488597036117) internal successors, (53024), 22538 states have internal predecessors, (53024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:20,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22539 states to 22539 states and 53024 transitions. [2022-02-10 23:59:20,903 INFO L78 Accepts]: Start accepts. Automaton has 22539 states and 53024 transitions. Word has length 33 [2022-02-10 23:59:20,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:20,903 INFO L470 AbstractCegarLoop]: Abstraction has 22539 states and 53024 transitions. [2022-02-10 23:59:20,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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) [2022-02-10 23:59:20,903 INFO L276 IsEmpty]: Start isEmpty. Operand 22539 states and 53024 transitions. [2022-02-10 23:59:20,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:20,923 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:20,923 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:20,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-10 23:59:21,132 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,SelfDestructingSolverStorable51 [2022-02-10 23:59:21,132 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:21,132 INFO L85 PathProgramCache]: Analyzing trace with hash 432351173, now seen corresponding path program 40 times [2022-02-10 23:59:21,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:21,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245312142] [2022-02-10 23:59:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:21,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:21,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:21,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245312142] [2022-02-10 23:59:21,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245312142] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:21,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047699199] [2022-02-10 23:59:21,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:21,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:21,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:21,175 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) [2022-02-10 23:59:21,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 23:59:21,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:21,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:21,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:21,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:21,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:21,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047699199] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:21,334 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:21,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:21,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884780100] [2022-02-10 23:59:21,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:21,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:21,334 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:21,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:21,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:21,335 INFO L87 Difference]: Start difference. First operand 22539 states and 53024 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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) [2022-02-10 23:59:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:21,594 INFO L93 Difference]: Finished difference Result 32195 states and 75475 transitions. [2022-02-10 23:59:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 23:59:21,594 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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 33 [2022-02-10 23:59:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:21,651 INFO L225 Difference]: With dead ends: 32195 [2022-02-10 23:59:21,651 INFO L226 Difference]: Without dead ends: 32174 [2022-02-10 23:59:21,652 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2022-02-10 23:59:21,652 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 259 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:21,652 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 176 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:21,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32174 states. [2022-02-10 23:59:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32174 to 22539. [2022-02-10 23:59:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22539 states, 22538 states have (on average 2.3520276865737864) internal successors, (53010), 22538 states have internal predecessors, (53010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22539 states to 22539 states and 53010 transitions. [2022-02-10 23:59:22,178 INFO L78 Accepts]: Start accepts. Automaton has 22539 states and 53010 transitions. Word has length 33 [2022-02-10 23:59:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:22,178 INFO L470 AbstractCegarLoop]: Abstraction has 22539 states and 53010 transitions. [2022-02-10 23:59:22,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 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) [2022-02-10 23:59:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 22539 states and 53010 transitions. [2022-02-10 23:59:22,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:22,198 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:22,198 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:22,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-02-10 23:59:22,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:22,399 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:22,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:22,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1671186997, now seen corresponding path program 41 times [2022-02-10 23:59:22,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:22,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584675955] [2022-02-10 23:59:22,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:22,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:22,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:22,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584675955] [2022-02-10 23:59:22,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584675955] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:22,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610078502] [2022-02-10 23:59:22,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:22,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:22,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:22,438 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) [2022-02-10 23:59:22,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:59:22,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:22,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:22,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:22,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 23:59:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:22,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:22,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610078502] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:22,624 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:22,624 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 23:59:22,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159660724] [2022-02-10 23:59:22,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:22,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 23:59:22,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 23:59:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:59:22,625 INFO L87 Difference]: Start difference. First operand 22539 states and 53010 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:22,860 INFO L93 Difference]: Finished difference Result 26397 states and 62722 transitions. [2022-02-10 23:59:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:59:22,861 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:22,908 INFO L225 Difference]: With dead ends: 26397 [2022-02-10 23:59:22,908 INFO L226 Difference]: Without dead ends: 26397 [2022-02-10 23:59:22,908 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2022-02-10 23:59:22,912 INFO L934 BasicCegarLoop]: 54 mSDtfsCounter, 96 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:22,912 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 260 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:22,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26397 states. [2022-02-10 23:59:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26397 to 22622. [2022-02-10 23:59:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22622 states, 22621 states have (on average 2.3521064497590736) internal successors, (53207), 22621 states have internal predecessors, (53207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22622 states to 22622 states and 53207 transitions. [2022-02-10 23:59:23,348 INFO L78 Accepts]: Start accepts. Automaton has 22622 states and 53207 transitions. Word has length 33 [2022-02-10 23:59:23,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:23,348 INFO L470 AbstractCegarLoop]: Abstraction has 22622 states and 53207 transitions. [2022-02-10 23:59:23,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 22622 states and 53207 transitions. [2022-02-10 23:59:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:23,368 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:23,368 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:23,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-02-10 23:59:23,568 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,SelfDestructingSolverStorable53 [2022-02-10 23:59:23,568 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:23,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1852319897, now seen corresponding path program 42 times [2022-02-10 23:59:23,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:23,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185421329] [2022-02-10 23:59:23,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:23,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:23,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:23,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185421329] [2022-02-10 23:59:23,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185421329] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:23,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297305728] [2022-02-10 23:59:23,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:23,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:23,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:23,606 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) [2022-02-10 23:59:23,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 23:59:23,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:59:23,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:23,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:23,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:23,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:23,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297305728] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:23,771 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:23,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:23,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721016525] [2022-02-10 23:59:23,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:23,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:23,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:23,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:23,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:23,772 INFO L87 Difference]: Start difference. First operand 22622 states and 53207 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:24,046 INFO L93 Difference]: Finished difference Result 24417 states and 57018 transitions. [2022-02-10 23:59:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 23:59:24,046 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:24,090 INFO L225 Difference]: With dead ends: 24417 [2022-02-10 23:59:24,090 INFO L226 Difference]: Without dead ends: 24417 [2022-02-10 23:59:24,090 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:59:24,090 INFO L934 BasicCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:24,090 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 359 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:24,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24417 states. [2022-02-10 23:59:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24417 to 22763. [2022-02-10 23:59:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22763 states, 22762 states have (on average 2.3521658905192866) internal successors, (53540), 22762 states have internal predecessors, (53540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22763 states to 22763 states and 53540 transitions. [2022-02-10 23:59:24,499 INFO L78 Accepts]: Start accepts. Automaton has 22763 states and 53540 transitions. Word has length 33 [2022-02-10 23:59:24,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:24,499 INFO L470 AbstractCegarLoop]: Abstraction has 22763 states and 53540 transitions. [2022-02-10 23:59:24,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 22763 states and 53540 transitions. [2022-02-10 23:59:24,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:24,519 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:24,519 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:24,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-10 23:59:24,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:24,720 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:24,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:24,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1106830689, now seen corresponding path program 43 times [2022-02-10 23:59:24,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:24,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017432795] [2022-02-10 23:59:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:24,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:24,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:24,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017432795] [2022-02-10 23:59:24,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017432795] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:24,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890746604] [2022-02-10 23:59:24,756 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:24,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:24,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:24,757 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) [2022-02-10 23:59:24,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 23:59:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:24,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:24,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:24,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:24,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890746604] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:24,911 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:24,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:24,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789349506] [2022-02-10 23:59:24,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:24,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:24,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:24,912 INFO L87 Difference]: Start difference. First operand 22763 states and 53540 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:25,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:25,327 INFO L93 Difference]: Finished difference Result 25809 states and 60064 transitions. [2022-02-10 23:59:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 23:59:25,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:25,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:25,372 INFO L225 Difference]: With dead ends: 25809 [2022-02-10 23:59:25,373 INFO L226 Difference]: Without dead ends: 25809 [2022-02-10 23:59:25,373 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=425, Invalid=907, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 23:59:25,373 INFO L934 BasicCegarLoop]: 72 mSDtfsCounter, 126 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:25,373 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 477 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25809 states. [2022-02-10 23:59:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25809 to 23440. [2022-02-10 23:59:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23440 states, 23439 states have (on average 2.3521907931225736) internal successors, (55133), 23439 states have internal predecessors, (55133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23440 states to 23440 states and 55133 transitions. [2022-02-10 23:59:25,767 INFO L78 Accepts]: Start accepts. Automaton has 23440 states and 55133 transitions. Word has length 33 [2022-02-10 23:59:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:25,767 INFO L470 AbstractCegarLoop]: Abstraction has 23440 states and 55133 transitions. [2022-02-10 23:59:25,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand 23440 states and 55133 transitions. [2022-02-10 23:59:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:25,787 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:25,787 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:25,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-10 23:59:25,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:25,988 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1290328105, now seen corresponding path program 44 times [2022-02-10 23:59:25,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:25,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699700063] [2022-02-10 23:59:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:25,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:26,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:26,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699700063] [2022-02-10 23:59:26,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699700063] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:26,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444759064] [2022-02-10 23:59:26,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:26,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:26,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:26,024 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) [2022-02-10 23:59:26,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 23:59:26,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:26,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:26,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:26,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:26,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:26,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444759064] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:26,208 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:26,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:26,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369542949] [2022-02-10 23:59:26,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:26,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:26,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:26,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:26,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:26,209 INFO L87 Difference]: Start difference. First operand 23440 states and 55133 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:26,651 INFO L93 Difference]: Finished difference Result 27255 states and 63572 transitions. [2022-02-10 23:59:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 23:59:26,651 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:26,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:26,699 INFO L225 Difference]: With dead ends: 27255 [2022-02-10 23:59:26,699 INFO L226 Difference]: Without dead ends: 27255 [2022-02-10 23:59:26,700 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=568, Invalid=1072, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:59:26,700 INFO L934 BasicCegarLoop]: 67 mSDtfsCounter, 174 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:26,700 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 385 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:59:26,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27255 states. [2022-02-10 23:59:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27255 to 24925. [2022-02-10 23:59:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24925 states, 24924 states have (on average 2.361057615150056) internal successors, (58847), 24924 states have internal predecessors, (58847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24925 states to 24925 states and 58847 transitions. [2022-02-10 23:59:27,140 INFO L78 Accepts]: Start accepts. Automaton has 24925 states and 58847 transitions. Word has length 33 [2022-02-10 23:59:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:27,140 INFO L470 AbstractCegarLoop]: Abstraction has 24925 states and 58847 transitions. [2022-02-10 23:59:27,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 24925 states and 58847 transitions. [2022-02-10 23:59:27,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:27,162 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:27,162 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:27,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-10 23:59:27,362 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,SelfDestructingSolverStorable56 [2022-02-10 23:59:27,362 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:27,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1312168577, now seen corresponding path program 45 times [2022-02-10 23:59:27,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:27,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007172906] [2022-02-10 23:59:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:27,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:27,400 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:27,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007172906] [2022-02-10 23:59:27,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007172906] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:27,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101153491] [2022-02-10 23:59:27,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:27,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:27,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:27,402 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) [2022-02-10 23:59:27,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 23:59:27,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:59:27,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:27,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:27,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:27,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:27,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101153491] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:27,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:27,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:27,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695404284] [2022-02-10 23:59:27,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:27,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:27,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:27,585 INFO L87 Difference]: Start difference. First operand 24925 states and 58847 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:27,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:27,933 INFO L93 Difference]: Finished difference Result 26710 states and 62485 transitions. [2022-02-10 23:59:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 23:59:27,933 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:27,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:27,980 INFO L225 Difference]: With dead ends: 26710 [2022-02-10 23:59:27,980 INFO L226 Difference]: Without dead ends: 26704 [2022-02-10 23:59:27,980 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=367, Invalid=689, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 23:59:27,981 INFO L934 BasicCegarLoop]: 76 mSDtfsCounter, 162 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:27,981 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 324 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26704 states. [2022-02-10 23:59:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26704 to 22875. [2022-02-10 23:59:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22875 states, 22874 states have (on average 2.3524525662324036) internal successors, (53810), 22874 states have internal predecessors, (53810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22875 states to 22875 states and 53810 transitions. [2022-02-10 23:59:28,437 INFO L78 Accepts]: Start accepts. Automaton has 22875 states and 53810 transitions. Word has length 33 [2022-02-10 23:59:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:28,437 INFO L470 AbstractCegarLoop]: Abstraction has 22875 states and 53810 transitions. [2022-02-10 23:59:28,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 22875 states and 53810 transitions. [2022-02-10 23:59:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:28,456 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:28,456 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:28,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-02-10 23:59:28,671 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,SelfDestructingSolverStorable57 [2022-02-10 23:59:28,671 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:28,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1257719307, now seen corresponding path program 46 times [2022-02-10 23:59:28,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:28,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207986627] [2022-02-10 23:59:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:28,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:28,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:28,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207986627] [2022-02-10 23:59:28,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207986627] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:28,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040598375] [2022-02-10 23:59:28,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:28,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:28,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:28,702 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) [2022-02-10 23:59:28,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 23:59:28,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:28,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:28,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:28,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:28,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:28,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040598375] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:28,889 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:28,889 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 23:59:28,889 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053560612] [2022-02-10 23:59:28,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:28,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 23:59:28,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 23:59:28,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:59:28,890 INFO L87 Difference]: Start difference. First operand 22875 states and 53810 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:29,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:29,242 INFO L93 Difference]: Finished difference Result 24764 states and 57821 transitions. [2022-02-10 23:59:29,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 23:59:29,242 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:29,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:29,280 INFO L225 Difference]: With dead ends: 24764 [2022-02-10 23:59:29,280 INFO L226 Difference]: Without dead ends: 24764 [2022-02-10 23:59:29,280 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 23:59:29,281 INFO L934 BasicCegarLoop]: 57 mSDtfsCounter, 117 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:29,281 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 409 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:29,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24764 states. [2022-02-10 23:59:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24764 to 22956. [2022-02-10 23:59:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22956 states, 22955 states have (on average 2.3530821171857985) internal successors, (54015), 22955 states have internal predecessors, (54015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22956 states to 22956 states and 54015 transitions. [2022-02-10 23:59:29,618 INFO L78 Accepts]: Start accepts. Automaton has 22956 states and 54015 transitions. Word has length 33 [2022-02-10 23:59:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:29,618 INFO L470 AbstractCegarLoop]: Abstraction has 22956 states and 54015 transitions. [2022-02-10 23:59:29,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 22956 states and 54015 transitions. [2022-02-10 23:59:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:29,636 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:29,636 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:29,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-02-10 23:59:29,837 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,SelfDestructingSolverStorable58 [2022-02-10 23:59:29,837 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:29,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:29,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1210801397, now seen corresponding path program 47 times [2022-02-10 23:59:29,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:29,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375380234] [2022-02-10 23:59:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:29,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:29,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:29,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375380234] [2022-02-10 23:59:29,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375380234] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:29,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765079184] [2022-02-10 23:59:29,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:29,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:29,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:29,873 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) [2022-02-10 23:59:29,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 23:59:29,892 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:59:29,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:29,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:29,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:30,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:30,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765079184] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:30,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:30,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-10 23:59:30,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429498919] [2022-02-10 23:59:30,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:30,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:30,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:30,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:30,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:30,056 INFO L87 Difference]: Start difference. First operand 22956 states and 54015 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:30,430 INFO L93 Difference]: Finished difference Result 26693 states and 62440 transitions. [2022-02-10 23:59:30,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 23:59:30,430 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:30,471 INFO L225 Difference]: With dead ends: 26693 [2022-02-10 23:59:30,471 INFO L226 Difference]: Without dead ends: 26693 [2022-02-10 23:59:30,471 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=390, Invalid=800, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:59:30,472 INFO L934 BasicCegarLoop]: 64 mSDtfsCounter, 125 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:30,472 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 366 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26693 states. [2022-02-10 23:59:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26693 to 22867. [2022-02-10 23:59:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22867 states, 22866 states have (on average 2.3544563981457185) internal successors, (53837), 22866 states have internal predecessors, (53837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22867 states to 22867 states and 53837 transitions. [2022-02-10 23:59:30,826 INFO L78 Accepts]: Start accepts. Automaton has 22867 states and 53837 transitions. Word has length 33 [2022-02-10 23:59:30,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:30,827 INFO L470 AbstractCegarLoop]: Abstraction has 22867 states and 53837 transitions. [2022-02-10 23:59:30,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 22867 states and 53837 transitions. [2022-02-10 23:59:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:30,849 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:30,849 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:30,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-02-10 23:59:31,050 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,SelfDestructingSolverStorable59 [2022-02-10 23:59:31,050 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:31,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash 113524725, now seen corresponding path program 48 times [2022-02-10 23:59:31,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:31,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071210417] [2022-02-10 23:59:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:31,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:31,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071210417] [2022-02-10 23:59:31,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071210417] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:31,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842365071] [2022-02-10 23:59:31,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:31,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:31,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:31,104 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) [2022-02-10 23:59:31,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 23:59:31,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 23:59:31,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:31,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:31,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:31,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:31,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842365071] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:31,289 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:31,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-10 23:59:31,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138208976] [2022-02-10 23:59:31,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:31,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:31,289 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:31,289 INFO L87 Difference]: Start difference. First operand 22867 states and 53837 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:31,732 INFO L93 Difference]: Finished difference Result 28350 states and 66437 transitions. [2022-02-10 23:59:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 23:59:31,732 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:31,776 INFO L225 Difference]: With dead ends: 28350 [2022-02-10 23:59:31,777 INFO L226 Difference]: Without dead ends: 28350 [2022-02-10 23:59:31,777 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=603, Invalid=1119, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 23:59:31,777 INFO L934 BasicCegarLoop]: 56 mSDtfsCounter, 195 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:31,777 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 328 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:31,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28350 states. [2022-02-10 23:59:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28350 to 25116. [2022-02-10 23:59:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25116 states, 25115 states have (on average 2.360461875373283) internal successors, (59283), 25115 states have internal predecessors, (59283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25116 states to 25116 states and 59283 transitions. [2022-02-10 23:59:32,323 INFO L78 Accepts]: Start accepts. Automaton has 25116 states and 59283 transitions. Word has length 33 [2022-02-10 23:59:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:32,323 INFO L470 AbstractCegarLoop]: Abstraction has 25116 states and 59283 transitions. [2022-02-10 23:59:32,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 25116 states and 59283 transitions. [2022-02-10 23:59:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:32,343 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:32,343 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:32,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-10 23:59:32,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:32,544 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash 135365197, now seen corresponding path program 49 times [2022-02-10 23:59:32,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:32,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405612725] [2022-02-10 23:59:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:32,582 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:32,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405612725] [2022-02-10 23:59:32,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405612725] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:32,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819811572] [2022-02-10 23:59:32,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:32,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:32,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:32,584 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) [2022-02-10 23:59:32,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 23:59:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:32,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:32,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:32,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:32,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819811572] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:32,783 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:32,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-10 23:59:32,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492045322] [2022-02-10 23:59:32,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:32,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:32,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:32,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:32,785 INFO L87 Difference]: Start difference. First operand 25116 states and 59283 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) 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) [2022-02-10 23:59:33,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:33,182 INFO L93 Difference]: Finished difference Result 28000 states and 65672 transitions. [2022-02-10 23:59:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-10 23:59:33,183 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) 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 33 [2022-02-10 23:59:33,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:33,229 INFO L225 Difference]: With dead ends: 28000 [2022-02-10 23:59:33,229 INFO L226 Difference]: Without dead ends: 27991 [2022-02-10 23:59:33,230 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=430, Invalid=830, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 23:59:33,230 INFO L934 BasicCegarLoop]: 70 mSDtfsCounter, 189 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:33,230 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 370 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27991 states. [2022-02-10 23:59:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27991 to 21716. [2022-02-10 23:59:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21716 states, 21715 states have (on average 2.34506101772968) internal successors, (50923), 21715 states have internal predecessors, (50923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21716 states to 21716 states and 50923 transitions. [2022-02-10 23:59:33,687 INFO L78 Accepts]: Start accepts. Automaton has 21716 states and 50923 transitions. Word has length 33 [2022-02-10 23:59:33,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:33,687 INFO L470 AbstractCegarLoop]: Abstraction has 21716 states and 50923 transitions. [2022-02-10 23:59:33,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) 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) [2022-02-10 23:59:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 21716 states and 50923 transitions. [2022-02-10 23:59:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:33,705 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:33,705 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:33,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-10 23:59:33,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:33,906 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:33,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:33,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2134217035, now seen corresponding path program 50 times [2022-02-10 23:59:33,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:33,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045022561] [2022-02-10 23:59:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:33,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:33,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:33,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045022561] [2022-02-10 23:59:33,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045022561] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:33,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716186875] [2022-02-10 23:59:33,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:33,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:33,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:33,940 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) [2022-02-10 23:59:33,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 23:59:33,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:33,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:33,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:33,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:34,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:34,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716186875] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:34,100 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:34,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 23:59:34,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129920879] [2022-02-10 23:59:34,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:34,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 23:59:34,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:34,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 23:59:34,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:59:34,101 INFO L87 Difference]: Start difference. First operand 21716 states and 50923 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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) [2022-02-10 23:59:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:34,422 INFO L93 Difference]: Finished difference Result 25620 states and 59884 transitions. [2022-02-10 23:59:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 23:59:34,422 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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 33 [2022-02-10 23:59:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:34,464 INFO L225 Difference]: With dead ends: 25620 [2022-02-10 23:59:34,464 INFO L226 Difference]: Without dead ends: 25596 [2022-02-10 23:59:34,464 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=373, Invalid=817, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:59:34,464 INFO L934 BasicCegarLoop]: 60 mSDtfsCounter, 163 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:34,464 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 341 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:34,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25596 states. [2022-02-10 23:59:34,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25596 to 22036. [2022-02-10 23:59:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22036 states, 22035 states have (on average 2.3504878602223735) internal successors, (51793), 22035 states have internal predecessors, (51793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22036 states to 22036 states and 51793 transitions. [2022-02-10 23:59:34,899 INFO L78 Accepts]: Start accepts. Automaton has 22036 states and 51793 transitions. Word has length 33 [2022-02-10 23:59:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:34,899 INFO L470 AbstractCegarLoop]: Abstraction has 22036 states and 51793 transitions. [2022-02-10 23:59:34,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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) [2022-02-10 23:59:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 22036 states and 51793 transitions. [2022-02-10 23:59:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:34,917 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:34,918 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:34,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:35,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:35,131 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:35,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1639003221, now seen corresponding path program 51 times [2022-02-10 23:59:35,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:35,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244282083] [2022-02-10 23:59:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:35,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:35,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:35,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244282083] [2022-02-10 23:59:35,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244282083] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:35,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481698538] [2022-02-10 23:59:35,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:35,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:35,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:35,170 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) [2022-02-10 23:59:35,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 23:59:35,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:59:35,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:35,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:35,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:35,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:35,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481698538] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:35,350 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:35,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-10 23:59:35,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157096703] [2022-02-10 23:59:35,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:35,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 23:59:35,350 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 23:59:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-02-10 23:59:35,351 INFO L87 Difference]: Start difference. First operand 22036 states and 51793 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:35,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:35,692 INFO L93 Difference]: Finished difference Result 26047 states and 60741 transitions. [2022-02-10 23:59:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 23:59:35,692 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:35,738 INFO L225 Difference]: With dead ends: 26047 [2022-02-10 23:59:35,738 INFO L226 Difference]: Without dead ends: 26047 [2022-02-10 23:59:35,738 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 23:59:35,739 INFO L934 BasicCegarLoop]: 51 mSDtfsCounter, 134 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:35,745 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 388 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26047 states. [2022-02-10 23:59:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26047 to 23108. [2022-02-10 23:59:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23108 states, 23107 states have (on average 2.3488120482970527) internal successors, (54274), 23107 states have internal predecessors, (54274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23108 states to 23108 states and 54274 transitions. [2022-02-10 23:59:36,113 INFO L78 Accepts]: Start accepts. Automaton has 23108 states and 54274 transitions. Word has length 33 [2022-02-10 23:59:36,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:36,113 INFO L470 AbstractCegarLoop]: Abstraction has 23108 states and 54274 transitions. [2022-02-10 23:59:36,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:36,113 INFO L276 IsEmpty]: Start isEmpty. Operand 23108 states and 54274 transitions. [2022-02-10 23:59:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:36,133 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:36,133 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:36,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-10 23:59:36,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:36,334 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash -962804323, now seen corresponding path program 52 times [2022-02-10 23:59:36,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:36,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207132950] [2022-02-10 23:59:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:36,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:36,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:36,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207132950] [2022-02-10 23:59:36,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207132950] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:36,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93492409] [2022-02-10 23:59:36,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:36,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:36,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:36,367 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) [2022-02-10 23:59:36,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 23:59:36,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:36,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:36,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:36,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:36,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:36,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93492409] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:36,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:36,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-02-10 23:59:36,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554312150] [2022-02-10 23:59:36,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:36,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 23:59:36,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:36,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 23:59:36,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:59:36,642 INFO L87 Difference]: Start difference. First operand 23108 states and 54274 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:37,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:37,063 INFO L93 Difference]: Finished difference Result 32109 states and 74871 transitions. [2022-02-10 23:59:37,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 23:59:37,063 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:37,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:37,114 INFO L225 Difference]: With dead ends: 32109 [2022-02-10 23:59:37,114 INFO L226 Difference]: Without dead ends: 32109 [2022-02-10 23:59:37,114 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=467, Invalid=1015, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:59:37,115 INFO L934 BasicCegarLoop]: 57 mSDtfsCounter, 169 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:37,115 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 376 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:37,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32109 states. [2022-02-10 23:59:37,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32109 to 26206. [2022-02-10 23:59:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26206 states, 26205 states have (on average 2.3523373402022516) internal successors, (61643), 26205 states have internal predecessors, (61643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26206 states to 26206 states and 61643 transitions. [2022-02-10 23:59:37,547 INFO L78 Accepts]: Start accepts. Automaton has 26206 states and 61643 transitions. Word has length 33 [2022-02-10 23:59:37,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:37,547 INFO L470 AbstractCegarLoop]: Abstraction has 26206 states and 61643 transitions. [2022-02-10 23:59:37,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand 26206 states and 61643 transitions. [2022-02-10 23:59:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:37,566 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:37,566 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:37,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-02-10 23:59:37,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:37,767 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:37,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash -490672923, now seen corresponding path program 53 times [2022-02-10 23:59:37,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:37,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295903181] [2022-02-10 23:59:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:37,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:37,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:37,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295903181] [2022-02-10 23:59:37,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295903181] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:37,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865150369] [2022-02-10 23:59:37,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:37,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:37,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:37,793 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) [2022-02-10 23:59:37,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 23:59:37,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:59:37,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:37,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:37,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:37,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:37,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865150369] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:37,978 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:37,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2022-02-10 23:59:37,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153948800] [2022-02-10 23:59:37,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:37,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:37,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:37,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:37,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:37,979 INFO L87 Difference]: Start difference. First operand 26206 states and 61643 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:38,424 INFO L93 Difference]: Finished difference Result 39752 states and 93127 transitions. [2022-02-10 23:59:38,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 23:59:38,424 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:38,488 INFO L225 Difference]: With dead ends: 39752 [2022-02-10 23:59:38,488 INFO L226 Difference]: Without dead ends: 39752 [2022-02-10 23:59:38,489 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=546, Invalid=1014, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:59:38,489 INFO L934 BasicCegarLoop]: 47 mSDtfsCounter, 222 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:38,489 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 279 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39752 states. [2022-02-10 23:59:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39752 to 33923. [2022-02-10 23:59:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33923 states, 33922 states have (on average 2.352632509875597) internal successors, (79806), 33922 states have internal predecessors, (79806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33923 states to 33923 states and 79806 transitions. [2022-02-10 23:59:39,105 INFO L78 Accepts]: Start accepts. Automaton has 33923 states and 79806 transitions. Word has length 33 [2022-02-10 23:59:39,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:39,105 INFO L470 AbstractCegarLoop]: Abstraction has 33923 states and 79806 transitions. [2022-02-10 23:59:39,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:39,105 INFO L276 IsEmpty]: Start isEmpty. Operand 33923 states and 79806 transitions. [2022-02-10 23:59:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:39,126 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:39,126 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:39,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-02-10 23:59:39,326 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,SelfDestructingSolverStorable65 [2022-02-10 23:59:39,326 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:39,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash -468832451, now seen corresponding path program 54 times [2022-02-10 23:59:39,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:39,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369450639] [2022-02-10 23:59:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:39,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:39,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369450639] [2022-02-10 23:59:39,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369450639] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:39,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771428933] [2022-02-10 23:59:39,352 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:39,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:39,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:39,353 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) [2022-02-10 23:59:39,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 23:59:39,414 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 23:59:39,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:39,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:39,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:39,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:39,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771428933] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:39,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:39,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2022-02-10 23:59:39,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062471078] [2022-02-10 23:59:39,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:39,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:39,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:39,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:39,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:39,553 INFO L87 Difference]: Start difference. First operand 33923 states and 79806 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:39,984 INFO L93 Difference]: Finished difference Result 39494 states and 92548 transitions. [2022-02-10 23:59:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 23:59:39,985 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:40,058 INFO L225 Difference]: With dead ends: 39494 [2022-02-10 23:59:40,059 INFO L226 Difference]: Without dead ends: 39488 [2022-02-10 23:59:40,059 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=466, Invalid=940, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 23:59:40,060 INFO L934 BasicCegarLoop]: 62 mSDtfsCounter, 174 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:40,060 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 372 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39488 states. [2022-02-10 23:59:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39488 to 31996. [2022-02-10 23:59:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31996 states, 31995 states have (on average 2.3426472886388496) internal successors, (74953), 31995 states have internal predecessors, (74953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31996 states to 31996 states and 74953 transitions. [2022-02-10 23:59:40,626 INFO L78 Accepts]: Start accepts. Automaton has 31996 states and 74953 transitions. Word has length 33 [2022-02-10 23:59:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:40,626 INFO L470 AbstractCegarLoop]: Abstraction has 31996 states and 74953 transitions. [2022-02-10 23:59:40,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 31996 states and 74953 transitions. [2022-02-10 23:59:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:40,647 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:40,647 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:40,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-10 23:59:40,847 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,SelfDestructingSolverStorable66 [2022-02-10 23:59:40,848 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:40,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:40,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1556552613, now seen corresponding path program 55 times [2022-02-10 23:59:40,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:40,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812993314] [2022-02-10 23:59:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:40,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:40,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:40,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812993314] [2022-02-10 23:59:40,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812993314] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:40,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455356783] [2022-02-10 23:59:40,884 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:40,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:40,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:40,885 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) [2022-02-10 23:59:40,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 23:59:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:40,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:40,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:41,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:59:41,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455356783] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:41,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:41,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-02-10 23:59:41,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968381921] [2022-02-10 23:59:41,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:41,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 23:59:41,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:41,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 23:59:41,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:59:41,056 INFO L87 Difference]: Start difference. First operand 31996 states and 74953 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:41,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:41,435 INFO L93 Difference]: Finished difference Result 39626 states and 92649 transitions. [2022-02-10 23:59:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 23:59:41,436 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:41,501 INFO L225 Difference]: With dead ends: 39626 [2022-02-10 23:59:41,501 INFO L226 Difference]: Without dead ends: 39605 [2022-02-10 23:59:41,501 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=411, Invalid=921, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 23:59:41,501 INFO L934 BasicCegarLoop]: 53 mSDtfsCounter, 213 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:41,502 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 331 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39605 states. [2022-02-10 23:59:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39605 to 34071. [2022-02-10 23:59:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34071 states, 34070 states have (on average 2.343263868506017) internal successors, (79835), 34070 states have internal predecessors, (79835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34071 states to 34071 states and 79835 transitions. [2022-02-10 23:59:42,149 INFO L78 Accepts]: Start accepts. Automaton has 34071 states and 79835 transitions. Word has length 33 [2022-02-10 23:59:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:42,149 INFO L470 AbstractCegarLoop]: Abstraction has 34071 states and 79835 transitions. [2022-02-10 23:59:42,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 34071 states and 79835 transitions. [2022-02-10 23:59:42,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 23:59:42,171 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:42,171 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:42,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-10 23:59:42,371 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,SelfDestructingSolverStorable67 [2022-02-10 23:59:42,371 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:42,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1106866945, now seen corresponding path program 56 times [2022-02-10 23:59:42,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:42,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101277642] [2022-02-10 23:59:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:42,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:42,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:42,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101277642] [2022-02-10 23:59:42,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101277642] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:42,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139047765] [2022-02-10 23:59:42,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:42,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:42,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:42,412 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) [2022-02-10 23:59:42,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 23:59:42,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:42,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:42,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:42,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:42,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:42,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139047765] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:42,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:42,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-10 23:59:42,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687937047] [2022-02-10 23:59:42,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:42,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 23:59:42,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:42,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 23:59:42,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-02-10 23:59:42,585 INFO L87 Difference]: Start difference. First operand 34071 states and 79835 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:42,953 INFO L93 Difference]: Finished difference Result 41917 states and 97976 transitions. [2022-02-10 23:59:42,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 23:59:42,953 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 23:59:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:43,032 INFO L225 Difference]: With dead ends: 41917 [2022-02-10 23:59:43,032 INFO L226 Difference]: Without dead ends: 41887 [2022-02-10 23:59:43,032 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=364, Invalid=896, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 23:59:43,033 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 155 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:43,033 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 289 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:43,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41887 states. [2022-02-10 23:59:43,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41887 to 36004. [2022-02-10 23:59:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36004 states, 36003 states have (on average 2.3451656806377246) internal successors, (84433), 36003 states have internal predecessors, (84433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36004 states to 36004 states and 84433 transitions. [2022-02-10 23:59:43,662 INFO L78 Accepts]: Start accepts. Automaton has 36004 states and 84433 transitions. Word has length 33 [2022-02-10 23:59:43,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:43,662 INFO L470 AbstractCegarLoop]: Abstraction has 36004 states and 84433 transitions. [2022-02-10 23:59:43,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 36004 states and 84433 transitions. [2022-02-10 23:59:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 23:59:43,690 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:43,690 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:43,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-10 23:59:43,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:43,895 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:43,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:43,896 INFO L85 PathProgramCache]: Analyzing trace with hash -866275995, now seen corresponding path program 57 times [2022-02-10 23:59:43,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:43,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72728743] [2022-02-10 23:59:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:43,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:43,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:43,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72728743] [2022-02-10 23:59:43,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72728743] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:43,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836241030] [2022-02-10 23:59:43,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:43,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:43,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:43,928 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) [2022-02-10 23:59:43,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 23:59:43,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:59:43,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:43,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:43,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:44,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:44,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836241030] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:44,075 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:44,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 23:59:44,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600087253] [2022-02-10 23:59:44,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:44,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 23:59:44,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 23:59:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:59:44,075 INFO L87 Difference]: Start difference. First operand 36004 states and 84433 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 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) [2022-02-10 23:59:44,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:44,293 INFO L93 Difference]: Finished difference Result 37583 states and 87928 transitions. [2022-02-10 23:59:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:59:44,294 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 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 36 [2022-02-10 23:59:44,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:44,357 INFO L225 Difference]: With dead ends: 37583 [2022-02-10 23:59:44,357 INFO L226 Difference]: Without dead ends: 37580 [2022-02-10 23:59:44,358 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2022-02-10 23:59:44,358 INFO L934 BasicCegarLoop]: 53 mSDtfsCounter, 93 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:44,358 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 245 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37580 states. [2022-02-10 23:59:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37580 to 36225. [2022-02-10 23:59:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36225 states, 36224 states have (on average 2.3438328180212014) internal successors, (84903), 36224 states have internal predecessors, (84903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36225 states to 36225 states and 84903 transitions. [2022-02-10 23:59:44,963 INFO L78 Accepts]: Start accepts. Automaton has 36225 states and 84903 transitions. Word has length 36 [2022-02-10 23:59:44,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:44,963 INFO L470 AbstractCegarLoop]: Abstraction has 36225 states and 84903 transitions. [2022-02-10 23:59:44,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 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) [2022-02-10 23:59:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 36225 states and 84903 transitions. [2022-02-10 23:59:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 23:59:44,989 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:44,989 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:45,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:45,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-10 23:59:45,190 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:45,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:45,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1074973353, now seen corresponding path program 58 times [2022-02-10 23:59:45,190 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:45,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236428876] [2022-02-10 23:59:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:45,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:45,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:45,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236428876] [2022-02-10 23:59:45,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236428876] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:45,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619309722] [2022-02-10 23:59:45,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:45,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:45,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:45,230 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) [2022-02-10 23:59:45,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 23:59:45,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:45,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:45,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:45,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:45,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:45,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619309722] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:45,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:45,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:45,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584639172] [2022-02-10 23:59:45,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:45,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:45,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:45,381 INFO L87 Difference]: Start difference. First operand 36225 states and 84903 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 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) [2022-02-10 23:59:45,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:45,753 INFO L93 Difference]: Finished difference Result 38677 states and 90388 transitions. [2022-02-10 23:59:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 23:59:45,753 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 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 36 [2022-02-10 23:59:45,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:45,819 INFO L225 Difference]: With dead ends: 38677 [2022-02-10 23:59:45,819 INFO L226 Difference]: Without dead ends: 38673 [2022-02-10 23:59:45,819 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=417, Invalid=773, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:59:45,819 INFO L934 BasicCegarLoop]: 65 mSDtfsCounter, 195 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:45,820 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 332 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:45,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38673 states. [2022-02-10 23:59:46,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38673 to 37674. [2022-02-10 23:59:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37674 states, 37673 states have (on average 2.3460037692777322) internal successors, (88381), 37673 states have internal predecessors, (88381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37674 states to 37674 states and 88381 transitions. [2022-02-10 23:59:46,529 INFO L78 Accepts]: Start accepts. Automaton has 37674 states and 88381 transitions. Word has length 36 [2022-02-10 23:59:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:46,529 INFO L470 AbstractCegarLoop]: Abstraction has 37674 states and 88381 transitions. [2022-02-10 23:59:46,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 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) [2022-02-10 23:59:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 37674 states and 88381 transitions. [2022-02-10 23:59:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 23:59:46,555 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:46,556 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:46,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-10 23:59:46,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:46,756 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash -632709139, now seen corresponding path program 59 times [2022-02-10 23:59:46,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:46,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105061113] [2022-02-10 23:59:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:46,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:46,791 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:46,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105061113] [2022-02-10 23:59:46,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105061113] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:46,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476126365] [2022-02-10 23:59:46,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:46,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:46,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:46,793 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) [2022-02-10 23:59:46,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 23:59:46,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 23:59:46,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:46,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:46,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:46,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:46,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476126365] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:46,943 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:46,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:46,943 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808502933] [2022-02-10 23:59:46,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:46,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:46,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:46,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:46,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:46,943 INFO L87 Difference]: Start difference. First operand 37674 states and 88381 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 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) [2022-02-10 23:59:47,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:47,398 INFO L93 Difference]: Finished difference Result 39155 states and 91312 transitions. [2022-02-10 23:59:47,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 23:59:47,399 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 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 36 [2022-02-10 23:59:47,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:47,466 INFO L225 Difference]: With dead ends: 39155 [2022-02-10 23:59:47,466 INFO L226 Difference]: Without dead ends: 39152 [2022-02-10 23:59:47,467 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=568, Invalid=1072, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:59:47,467 INFO L934 BasicCegarLoop]: 66 mSDtfsCounter, 187 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:47,467 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 363 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39152 states. [2022-02-10 23:59:47,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39152 to 35583. [2022-02-10 23:59:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35583 states, 35582 states have (on average 2.348153560789163) internal successors, (83552), 35582 states have internal predecessors, (83552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35583 states to 35583 states and 83552 transitions. [2022-02-10 23:59:48,086 INFO L78 Accepts]: Start accepts. Automaton has 35583 states and 83552 transitions. Word has length 36 [2022-02-10 23:59:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:48,086 INFO L470 AbstractCegarLoop]: Abstraction has 35583 states and 83552 transitions. [2022-02-10 23:59:48,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 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) [2022-02-10 23:59:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 35583 states and 83552 transitions. [2022-02-10 23:59:48,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 23:59:48,112 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:48,113 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:48,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:48,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:48,313 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1645368369, now seen corresponding path program 60 times [2022-02-10 23:59:48,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:48,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538877669] [2022-02-10 23:59:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:48,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:48,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538877669] [2022-02-10 23:59:48,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538877669] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:48,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786922676] [2022-02-10 23:59:48,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:48,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:48,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:48,347 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) [2022-02-10 23:59:48,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 23:59:48,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 23:59:48,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:48,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:48,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:48,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:48,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786922676] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:48,526 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:48,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 23:59:48,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274406312] [2022-02-10 23:59:48,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:48,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 23:59:48,526 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 23:59:48,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:59:48,527 INFO L87 Difference]: Start difference. First operand 35583 states and 83552 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:48,945 INFO L93 Difference]: Finished difference Result 41615 states and 97424 transitions. [2022-02-10 23:59:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 23:59:48,945 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 23:59:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:49,015 INFO L225 Difference]: With dead ends: 41615 [2022-02-10 23:59:49,016 INFO L226 Difference]: Without dead ends: 41583 [2022-02-10 23:59:49,016 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=475, Invalid=1007, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:59:49,016 INFO L934 BasicCegarLoop]: 51 mSDtfsCounter, 228 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:49,016 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 383 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:49,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41583 states. [2022-02-10 23:59:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41583 to 35658. [2022-02-10 23:59:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35658 states, 35657 states have (on average 2.3427377513531704) internal successors, (83535), 35657 states have internal predecessors, (83535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35658 states to 35658 states and 83535 transitions. [2022-02-10 23:59:49,635 INFO L78 Accepts]: Start accepts. Automaton has 35658 states and 83535 transitions. Word has length 36 [2022-02-10 23:59:49,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:49,635 INFO L470 AbstractCegarLoop]: Abstraction has 35658 states and 83535 transitions. [2022-02-10 23:59:49,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:49,635 INFO L276 IsEmpty]: Start isEmpty. Operand 35658 states and 83535 transitions. [2022-02-10 23:59:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 23:59:49,661 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:49,661 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:49,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-10 23:59:49,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:49,862 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash -604155377, now seen corresponding path program 61 times [2022-02-10 23:59:49,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:49,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978048071] [2022-02-10 23:59:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:49,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:49,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:49,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978048071] [2022-02-10 23:59:49,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978048071] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:49,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204511062] [2022-02-10 23:59:49,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:49,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:49,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:49,903 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) [2022-02-10 23:59:49,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 23:59:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:49,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:49,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:50,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:50,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204511062] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:50,059 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:50,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-10 23:59:50,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605205356] [2022-02-10 23:59:50,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:50,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:50,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:50,059 INFO L87 Difference]: Start difference. First operand 35658 states and 83535 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 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) [2022-02-10 23:59:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:50,537 INFO L93 Difference]: Finished difference Result 41278 states and 95632 transitions. [2022-02-10 23:59:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 23:59:50,537 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 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 36 [2022-02-10 23:59:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:50,609 INFO L225 Difference]: With dead ends: 41278 [2022-02-10 23:59:50,609 INFO L226 Difference]: Without dead ends: 41275 [2022-02-10 23:59:50,609 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=603, Invalid=1119, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 23:59:50,610 INFO L934 BasicCegarLoop]: 58 mSDtfsCounter, 209 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:50,610 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 366 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:59:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41275 states. [2022-02-10 23:59:51,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41275 to 35066. [2022-02-10 23:59:51,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35066 states, 35065 states have (on average 2.343733067160987) internal successors, (82183), 35065 states have internal predecessors, (82183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35066 states to 35066 states and 82183 transitions. [2022-02-10 23:59:51,376 INFO L78 Accepts]: Start accepts. Automaton has 35066 states and 82183 transitions. Word has length 36 [2022-02-10 23:59:51,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:51,376 INFO L470 AbstractCegarLoop]: Abstraction has 35066 states and 82183 transitions. [2022-02-10 23:59:51,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 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) [2022-02-10 23:59:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 35066 states and 82183 transitions. [2022-02-10 23:59:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 23:59:51,403 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:51,403 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:51,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-10 23:59:51,603 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,SelfDestructingSolverStorable73 [2022-02-10 23:59:51,603 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:51,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1632848313, now seen corresponding path program 62 times [2022-02-10 23:59:51,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:51,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134674486] [2022-02-10 23:59:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:51,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:51,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:51,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134674486] [2022-02-10 23:59:51,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134674486] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:51,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894575649] [2022-02-10 23:59:51,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:51,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:51,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:51,648 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) [2022-02-10 23:59:51,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 23:59:51,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:51,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:51,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:51,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:51,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:51,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894575649] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:51,822 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:51,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-10 23:59:51,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791003060] [2022-02-10 23:59:51,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:51,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 23:59:51,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 23:59:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-02-10 23:59:51,823 INFO L87 Difference]: Start difference. First operand 35066 states and 82183 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:52,286 INFO L93 Difference]: Finished difference Result 43060 states and 100196 transitions. [2022-02-10 23:59:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 23:59:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 23:59:52,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:52,362 INFO L225 Difference]: With dead ends: 43060 [2022-02-10 23:59:52,362 INFO L226 Difference]: Without dead ends: 42992 [2022-02-10 23:59:52,363 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=512, Invalid=1210, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 23:59:52,364 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 224 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:52,364 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 335 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42992 states. [2022-02-10 23:59:53,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42992 to 38615. [2022-02-10 23:59:53,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38615 states, 38614 states have (on average 2.334593670689387) internal successors, (90148), 38614 states have internal predecessors, (90148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38615 states to 38615 states and 90148 transitions. [2022-02-10 23:59:53,142 INFO L78 Accepts]: Start accepts. Automaton has 38615 states and 90148 transitions. Word has length 36 [2022-02-10 23:59:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:53,142 INFO L470 AbstractCegarLoop]: Abstraction has 38615 states and 90148 transitions. [2022-02-10 23:59:53,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand 38615 states and 90148 transitions. [2022-02-10 23:59:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 23:59:53,171 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:53,171 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:53,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-10 23:59:53,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-02-10 23:59:53,375 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:53,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1182521095, now seen corresponding path program 63 times [2022-02-10 23:59:53,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:53,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561153278] [2022-02-10 23:59:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:53,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:53,400 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:53,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561153278] [2022-02-10 23:59:53,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561153278] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:53,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406760993] [2022-02-10 23:59:53,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:53,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:53,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:53,401 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) [2022-02-10 23:59:53,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 23:59:53,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:59:53,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:53,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:53,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:53,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:53,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406760993] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:53,562 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:53,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2022-02-10 23:59:53,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416100963] [2022-02-10 23:59:53,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:53,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:53,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:53,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:53,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:53,563 INFO L87 Difference]: Start difference. First operand 38615 states and 90148 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:54,087 INFO L93 Difference]: Finished difference Result 49326 states and 113916 transitions. [2022-02-10 23:59:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 23:59:54,089 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 23:59:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:54,194 INFO L225 Difference]: With dead ends: 49326 [2022-02-10 23:59:54,195 INFO L226 Difference]: Without dead ends: 49323 [2022-02-10 23:59:54,195 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=546, Invalid=1014, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:59:54,195 INFO L934 BasicCegarLoop]: 49 mSDtfsCounter, 197 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:54,195 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 356 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49323 states. [2022-02-10 23:59:55,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49323 to 45834. [2022-02-10 23:59:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45834 states, 45833 states have (on average 2.3239587196997795) internal successors, (106514), 45833 states have internal predecessors, (106514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45834 states to 45834 states and 106514 transitions. [2022-02-10 23:59:55,365 INFO L78 Accepts]: Start accepts. Automaton has 45834 states and 106514 transitions. Word has length 36 [2022-02-10 23:59:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:55,366 INFO L470 AbstractCegarLoop]: Abstraction has 45834 states and 106514 transitions. [2022-02-10 23:59:55,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:55,366 INFO L276 IsEmpty]: Start isEmpty. Operand 45834 states and 106514 transitions. [2022-02-10 23:59:55,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 23:59:55,404 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:55,404 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:55,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:55,605 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,SelfDestructingSolverStorable75 [2022-02-10 23:59:55,605 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:55,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1883848749, now seen corresponding path program 64 times [2022-02-10 23:59:55,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:55,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492798760] [2022-02-10 23:59:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:55,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:55,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:55,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492798760] [2022-02-10 23:59:55,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492798760] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:55,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705510624] [2022-02-10 23:59:55,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:55,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:55,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:55,648 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) [2022-02-10 23:59:55,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 23:59:55,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:55,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:55,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:55,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:55,745 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:55,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:55,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705510624] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:55,791 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:55,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 23:59:55,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433285718] [2022-02-10 23:59:55,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:55,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 23:59:55,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:55,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 23:59:55,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:59:55,791 INFO L87 Difference]: Start difference. First operand 45834 states and 106514 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:56,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:56,046 INFO L93 Difference]: Finished difference Result 52382 states and 120796 transitions. [2022-02-10 23:59:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:59:56,046 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 23:59:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:56,165 INFO L225 Difference]: With dead ends: 52382 [2022-02-10 23:59:56,165 INFO L226 Difference]: Without dead ends: 52354 [2022-02-10 23:59:56,165 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-02-10 23:59:56,165 INFO L934 BasicCegarLoop]: 38 mSDtfsCounter, 114 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:56,165 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 168 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:59:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52354 states. [2022-02-10 23:59:57,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52354 to 45834. [2022-02-10 23:59:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45834 states, 45833 states have (on average 2.3239369013592825) internal successors, (106513), 45833 states have internal predecessors, (106513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45834 states to 45834 states and 106513 transitions. [2022-02-10 23:59:57,299 INFO L78 Accepts]: Start accepts. Automaton has 45834 states and 106513 transitions. Word has length 36 [2022-02-10 23:59:57,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:57,299 INFO L470 AbstractCegarLoop]: Abstraction has 45834 states and 106513 transitions. [2022-02-10 23:59:57,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:57,299 INFO L276 IsEmpty]: Start isEmpty. Operand 45834 states and 106513 transitions. [2022-02-10 23:59:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 23:59:57,333 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:57,333 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:57,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-10 23:59:57,534 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,SelfDestructingSolverStorable76 [2022-02-10 23:59:57,534 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:57,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:57,534 INFO L85 PathProgramCache]: Analyzing trace with hash 530994473, now seen corresponding path program 65 times [2022-02-10 23:59:57,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:57,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577206810] [2022-02-10 23:59:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:57,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:57,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:57,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577206810] [2022-02-10 23:59:57,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577206810] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:57,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809478807] [2022-02-10 23:59:57,564 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:57,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:57,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:57,580 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) [2022-02-10 23:59:57,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 23:59:57,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:59:57,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:57,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:57,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:57,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:57,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809478807] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:57,734 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:57,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:57,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141527388] [2022-02-10 23:59:57,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:57,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:57,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:57,735 INFO L87 Difference]: Start difference. First operand 45834 states and 106513 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:58,212 INFO L93 Difference]: Finished difference Result 52514 states and 121008 transitions. [2022-02-10 23:59:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 23:59:58,212 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 23:59:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:58,323 INFO L225 Difference]: With dead ends: 52514 [2022-02-10 23:59:58,323 INFO L226 Difference]: Without dead ends: 52488 [2022-02-10 23:59:58,323 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:59:58,323 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 179 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:58,323 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 215 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:58,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52488 states. [2022-02-10 23:59:59,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52488 to 47157. [2022-02-10 23:59:59,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47157 states, 47156 states have (on average 2.3276995504283655) internal successors, (109765), 47156 states have internal predecessors, (109765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47157 states to 47157 states and 109765 transitions. [2022-02-10 23:59:59,322 INFO L78 Accepts]: Start accepts. Automaton has 47157 states and 109765 transitions. Word has length 36 [2022-02-10 23:59:59,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:59,322 INFO L470 AbstractCegarLoop]: Abstraction has 47157 states and 109765 transitions. [2022-02-10 23:59:59,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 47157 states and 109765 transitions. [2022-02-10 23:59:59,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 23:59:59,357 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:59,357 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:59,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-10 23:59:59,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:59,558 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:59,558 INFO L85 PathProgramCache]: Analyzing trace with hash -805053271, now seen corresponding path program 66 times [2022-02-10 23:59:59,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:59,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414345604] [2022-02-10 23:59:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:59,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:59,592 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:59,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414345604] [2022-02-10 23:59:59,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414345604] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:59,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434599108] [2022-02-10 23:59:59,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:59,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:59,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:59,594 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) [2022-02-10 23:59:59,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 23:59:59,616 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:59:59,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:59,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:59:59,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:59,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:59,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434599108] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:59,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:59,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 23:59:59,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060797666] [2022-02-10 23:59:59,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:59,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:59:59,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:59:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:59:59,775 INFO L87 Difference]: Start difference. First operand 47157 states and 109765 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:00,330 INFO L93 Difference]: Finished difference Result 62068 states and 143842 transitions. [2022-02-11 00:00:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 00:00:00,331 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-11 00:00:00,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:00,456 INFO L225 Difference]: With dead ends: 62068 [2022-02-11 00:00:00,456 INFO L226 Difference]: Without dead ends: 62040 [2022-02-11 00:00:00,456 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:00:00,459 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 191 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:00,459 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 314 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:00:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62040 states. [2022-02-11 00:00:01,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62040 to 57614. [2022-02-11 00:00:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57614 states, 57613 states have (on average 2.3172895006335374) internal successors, (133506), 57613 states have internal predecessors, (133506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:01,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57614 states to 57614 states and 133506 transitions. [2022-02-11 00:00:01,756 INFO L78 Accepts]: Start accepts. Automaton has 57614 states and 133506 transitions. Word has length 36 [2022-02-11 00:00:01,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:01,756 INFO L470 AbstractCegarLoop]: Abstraction has 57614 states and 133506 transitions. [2022-02-11 00:00:01,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:01,756 INFO L276 IsEmpty]: Start isEmpty. Operand 57614 states and 133506 transitions. [2022-02-11 00:00:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-11 00:00:01,795 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:01,795 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:01,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-02-11 00:00:01,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:01,995 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1492976681, now seen corresponding path program 67 times [2022-02-11 00:00:01,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:01,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141475266] [2022-02-11 00:00:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:01,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:02,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:02,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141475266] [2022-02-11 00:00:02,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141475266] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:02,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087630661] [2022-02-11 00:00:02,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:00:02,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:02,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:02,035 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) [2022-02-11 00:00:02,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-11 00:00:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:02,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-11 00:00:02,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:02,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:02,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087630661] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:02,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:02,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-11 00:00:02,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780156641] [2022-02-11 00:00:02,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:02,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-11 00:00:02,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:02,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-11 00:00:02,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:00:02,207 INFO L87 Difference]: Start difference. First operand 57614 states and 133506 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:02,879 INFO L93 Difference]: Finished difference Result 65894 states and 152460 transitions. [2022-02-11 00:00:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-11 00:00:02,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-11 00:00:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:03,016 INFO L225 Difference]: With dead ends: 65894 [2022-02-11 00:00:03,016 INFO L226 Difference]: Without dead ends: 65888 [2022-02-11 00:00:03,017 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:00:03,017 INFO L934 BasicCegarLoop]: 50 mSDtfsCounter, 266 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:03,017 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 271 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:00:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65888 states. [2022-02-11 00:00:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65888 to 56537. [2022-02-11 00:00:04,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56537 states, 56536 states have (on average 2.3180451393802177) internal successors, (131053), 56536 states have internal predecessors, (131053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56537 states to 56537 states and 131053 transitions. [2022-02-11 00:00:04,387 INFO L78 Accepts]: Start accepts. Automaton has 56537 states and 131053 transitions. Word has length 36 [2022-02-11 00:00:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:04,387 INFO L470 AbstractCegarLoop]: Abstraction has 56537 states and 131053 transitions. [2022-02-11 00:00:04,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 56537 states and 131053 transitions. [2022-02-11 00:00:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-11 00:00:04,603 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:04,603 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:04,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:04,803 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,SelfDestructingSolverStorable79 [2022-02-11 00:00:04,803 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash -214705811, now seen corresponding path program 68 times [2022-02-11 00:00:04,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:04,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520342058] [2022-02-11 00:00:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:04,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:04,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:04,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520342058] [2022-02-11 00:00:04,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520342058] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:04,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446524163] [2022-02-11 00:00:04,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:00:04,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:04,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:04,840 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) [2022-02-11 00:00:04,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-11 00:00:04,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:00:04,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:04,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-11 00:00:04,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:04,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:05,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446524163] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:05,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:05,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-11 00:00:05,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795584117] [2022-02-11 00:00:05,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:05,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-11 00:00:05,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-11 00:00:05,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:00:05,016 INFO L87 Difference]: Start difference. First operand 56537 states and 131053 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:05,571 INFO L93 Difference]: Finished difference Result 61139 states and 139313 transitions. [2022-02-11 00:00:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-11 00:00:05,572 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-11 00:00:05,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:05,839 INFO L225 Difference]: With dead ends: 61139 [2022-02-11 00:00:05,839 INFO L226 Difference]: Without dead ends: 61124 [2022-02-11 00:00:05,840 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=578, Invalid=1314, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 00:00:05,840 INFO L934 BasicCegarLoop]: 49 mSDtfsCounter, 292 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:05,840 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 368 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:00:05,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61124 states. [2022-02-11 00:00:06,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61124 to 52544. [2022-02-11 00:00:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52544 states, 52543 states have (on average 2.296994842319624) internal successors, (120691), 52543 states have internal predecessors, (120691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52544 states to 52544 states and 120691 transitions. [2022-02-11 00:00:07,159 INFO L78 Accepts]: Start accepts. Automaton has 52544 states and 120691 transitions. Word has length 36 [2022-02-11 00:00:07,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:07,160 INFO L470 AbstractCegarLoop]: Abstraction has 52544 states and 120691 transitions. [2022-02-11 00:00:07,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:07,160 INFO L276 IsEmpty]: Start isEmpty. Operand 52544 states and 120691 transitions. [2022-02-11 00:00:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:07,200 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:07,200 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:07,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-02-11 00:00:07,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:07,401 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:07,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:07,401 INFO L85 PathProgramCache]: Analyzing trace with hash 309184047, now seen corresponding path program 69 times [2022-02-11 00:00:07,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:07,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971005309] [2022-02-11 00:00:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:07,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:07,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:07,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971005309] [2022-02-11 00:00:07,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971005309] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:07,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039145658] [2022-02-11 00:00:07,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:00:07,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:07,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:07,522 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) [2022-02-11 00:00:07,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-11 00:00:07,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:00:07,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:07,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:07,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:07,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:07,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039145658] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:07,750 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:07,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:07,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250243746] [2022-02-11 00:00:07,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:07,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:07,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:07,751 INFO L87 Difference]: Start difference. First operand 52544 states and 120691 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:08,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:08,300 INFO L93 Difference]: Finished difference Result 55132 states and 126616 transitions. [2022-02-11 00:00:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:08,301 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:08,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:08,424 INFO L225 Difference]: With dead ends: 55132 [2022-02-11 00:00:08,424 INFO L226 Difference]: Without dead ends: 55102 [2022-02-11 00:00:08,424 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:08,424 INFO L934 BasicCegarLoop]: 87 mSDtfsCounter, 85 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:08,424 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1112 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55102 states. [2022-02-11 00:00:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55102 to 53299. [2022-02-11 00:00:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53299 states, 53298 states have (on average 2.2968404067694848) internal successors, (122417), 53298 states have internal predecessors, (122417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53299 states to 53299 states and 122417 transitions. [2022-02-11 00:00:09,478 INFO L78 Accepts]: Start accepts. Automaton has 53299 states and 122417 transitions. Word has length 39 [2022-02-11 00:00:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:09,478 INFO L470 AbstractCegarLoop]: Abstraction has 53299 states and 122417 transitions. [2022-02-11 00:00:09,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 53299 states and 122417 transitions. [2022-02-11 00:00:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:09,689 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:09,689 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:09,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:09,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:09,890 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1506513221, now seen corresponding path program 70 times [2022-02-11 00:00:09,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:09,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224335491] [2022-02-11 00:00:09,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:09,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:10,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:10,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224335491] [2022-02-11 00:00:10,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224335491] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:10,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487730225] [2022-02-11 00:00:10,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:00:10,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:10,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:10,041 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) [2022-02-11 00:00:10,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-11 00:00:10,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:00:10,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:10,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:10,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:10,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:10,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487730225] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:10,338 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:10,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:10,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119991156] [2022-02-11 00:00:10,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:10,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:10,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:10,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:10,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:10,339 INFO L87 Difference]: Start difference. First operand 53299 states and 122417 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:10,773 INFO L93 Difference]: Finished difference Result 57247 states and 131557 transitions. [2022-02-11 00:00:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:11,093 INFO L225 Difference]: With dead ends: 57247 [2022-02-11 00:00:11,093 INFO L226 Difference]: Without dead ends: 57213 [2022-02-11 00:00:11,093 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:11,093 INFO L934 BasicCegarLoop]: 84 mSDtfsCounter, 76 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:11,094 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 1075 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57213 states. [2022-02-11 00:00:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57213 to 54378. [2022-02-11 00:00:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54378 states, 54377 states have (on average 2.299152215090939) internal successors, (125021), 54377 states have internal predecessors, (125021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54378 states to 54378 states and 125021 transitions. [2022-02-11 00:00:12,265 INFO L78 Accepts]: Start accepts. Automaton has 54378 states and 125021 transitions. Word has length 39 [2022-02-11 00:00:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:12,265 INFO L470 AbstractCegarLoop]: Abstraction has 54378 states and 125021 transitions. [2022-02-11 00:00:12,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 54378 states and 125021 transitions. [2022-02-11 00:00:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:12,324 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:12,324 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:12,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:12,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:12,525 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:12,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:12,525 INFO L85 PathProgramCache]: Analyzing trace with hash -308097681, now seen corresponding path program 71 times [2022-02-11 00:00:12,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:12,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302602353] [2022-02-11 00:00:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:12,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:12,695 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:12,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302602353] [2022-02-11 00:00:12,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302602353] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:12,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685836264] [2022-02-11 00:00:12,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:00:12,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:12,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:12,696 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) [2022-02-11 00:00:12,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-11 00:00:12,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:00:12,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:12,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:12,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:12,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:12,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685836264] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:12,994 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:12,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:12,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052940559] [2022-02-11 00:00:12,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:13,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:13,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:13,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:13,003 INFO L87 Difference]: Start difference. First operand 54378 states and 125021 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:13,618 INFO L93 Difference]: Finished difference Result 59788 states and 137650 transitions. [2022-02-11 00:00:13,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:13,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:13,780 INFO L225 Difference]: With dead ends: 59788 [2022-02-11 00:00:13,781 INFO L226 Difference]: Without dead ends: 59752 [2022-02-11 00:00:13,781 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:13,781 INFO L934 BasicCegarLoop]: 83 mSDtfsCounter, 74 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:13,781 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1062 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59752 states. [2022-02-11 00:00:14,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59752 to 55779. [2022-02-11 00:00:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55779 states, 55778 states have (on average 2.302933056043601) internal successors, (128453), 55778 states have internal predecessors, (128453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55779 states to 55779 states and 128453 transitions. [2022-02-11 00:00:15,368 INFO L78 Accepts]: Start accepts. Automaton has 55779 states and 128453 transitions. Word has length 39 [2022-02-11 00:00:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:15,368 INFO L470 AbstractCegarLoop]: Abstraction has 55779 states and 128453 transitions. [2022-02-11 00:00:15,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 55779 states and 128453 transitions. [2022-02-11 00:00:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:15,417 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:15,417 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:15,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:15,617 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,SelfDestructingSolverStorable83 [2022-02-11 00:00:15,618 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1292344581, now seen corresponding path program 72 times [2022-02-11 00:00:15,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:15,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087232434] [2022-02-11 00:00:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:15,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:15,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087232434] [2022-02-11 00:00:15,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087232434] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:15,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230065324] [2022-02-11 00:00:15,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:00:15,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:15,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:15,753 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) [2022-02-11 00:00:15,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-11 00:00:15,779 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 00:00:15,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:15,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:15,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:15,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:16,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230065324] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:16,002 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:16,002 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:16,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882168801] [2022-02-11 00:00:16,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:16,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:16,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:16,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:16,003 INFO L87 Difference]: Start difference. First operand 55779 states and 128453 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:16,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:16,451 INFO L93 Difference]: Finished difference Result 62634 states and 144537 transitions. [2022-02-11 00:00:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:16,452 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:16,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:16,780 INFO L225 Difference]: With dead ends: 62634 [2022-02-11 00:00:16,781 INFO L226 Difference]: Without dead ends: 62596 [2022-02-11 00:00:16,781 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:16,781 INFO L934 BasicCegarLoop]: 82 mSDtfsCounter, 72 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:16,781 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1049 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:16,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62596 states. [2022-02-11 00:00:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62596 to 57564. [2022-02-11 00:00:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57564 states, 57563 states have (on average 2.307992981602766) internal successors, (132855), 57563 states have internal predecessors, (132855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:18,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57564 states to 57564 states and 132855 transitions. [2022-02-11 00:00:18,003 INFO L78 Accepts]: Start accepts. Automaton has 57564 states and 132855 transitions. Word has length 39 [2022-02-11 00:00:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:18,004 INFO L470 AbstractCegarLoop]: Abstraction has 57564 states and 132855 transitions. [2022-02-11 00:00:18,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:18,004 INFO L276 IsEmpty]: Start isEmpty. Operand 57564 states and 132855 transitions. [2022-02-11 00:00:18,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:18,057 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:18,057 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:18,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-11 00:00:18,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:18,273 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:18,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash -21671121, now seen corresponding path program 73 times [2022-02-11 00:00:18,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:18,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428135721] [2022-02-11 00:00:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:18,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:18,400 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:18,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428135721] [2022-02-11 00:00:18,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428135721] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:18,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659784397] [2022-02-11 00:00:18,400 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:00:18,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:18,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:18,401 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) [2022-02-11 00:00:18,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-11 00:00:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:18,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:18,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:18,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:18,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659784397] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:18,844 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:18,844 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:18,844 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340806650] [2022-02-11 00:00:18,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:18,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:18,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:18,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:18,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:18,844 INFO L87 Difference]: Start difference. First operand 57564 states and 132855 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:19,283 INFO L93 Difference]: Finished difference Result 66814 states and 154712 transitions. [2022-02-11 00:00:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:19,283 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:19,430 INFO L225 Difference]: With dead ends: 66814 [2022-02-11 00:00:19,430 INFO L226 Difference]: Without dead ends: 66772 [2022-02-11 00:00:19,431 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:19,431 INFO L934 BasicCegarLoop]: 85 mSDtfsCounter, 78 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:19,431 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 1085 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66772 states. [2022-02-11 00:00:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66772 to 59612. [2022-02-11 00:00:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59612 states, 59611 states have (on average 2.314337957759474) internal successors, (137960), 59611 states have internal predecessors, (137960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59612 states to 59612 states and 137960 transitions. [2022-02-11 00:00:20,910 INFO L78 Accepts]: Start accepts. Automaton has 59612 states and 137960 transitions. Word has length 39 [2022-02-11 00:00:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:20,911 INFO L470 AbstractCegarLoop]: Abstraction has 59612 states and 137960 transitions. [2022-02-11 00:00:20,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 59612 states and 137960 transitions. [2022-02-11 00:00:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:20,962 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:20,962 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:20,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-11 00:00:21,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:21,164 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:21,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1949170437, now seen corresponding path program 74 times [2022-02-11 00:00:21,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:21,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570484878] [2022-02-11 00:00:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:21,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:21,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:21,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570484878] [2022-02-11 00:00:21,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570484878] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:21,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467693407] [2022-02-11 00:00:21,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:00:21,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:21,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:21,298 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) [2022-02-11 00:00:21,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-11 00:00:21,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:00:21,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:21,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:21,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:21,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:21,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467693407] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:21,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:21,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:21,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794854501] [2022-02-11 00:00:21,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:21,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:21,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:21,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:21,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:21,567 INFO L87 Difference]: Start difference. First operand 59612 states and 137960 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:22,233 INFO L93 Difference]: Finished difference Result 70438 states and 163188 transitions. [2022-02-11 00:00:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:22,234 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:22,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:22,429 INFO L225 Difference]: With dead ends: 70438 [2022-02-11 00:00:22,430 INFO L226 Difference]: Without dead ends: 70401 [2022-02-11 00:00:22,430 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:22,430 INFO L934 BasicCegarLoop]: 80 mSDtfsCounter, 69 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:22,430 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1020 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70401 states. [2022-02-11 00:00:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70401 to 65820. [2022-02-11 00:00:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65820 states, 65819 states have (on average 2.321700420851122) internal successors, (152812), 65819 states have internal predecessors, (152812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65820 states to 65820 states and 152812 transitions. [2022-02-11 00:00:24,158 INFO L78 Accepts]: Start accepts. Automaton has 65820 states and 152812 transitions. Word has length 39 [2022-02-11 00:00:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:24,158 INFO L470 AbstractCegarLoop]: Abstraction has 65820 states and 152812 transitions. [2022-02-11 00:00:24,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 65820 states and 152812 transitions. [2022-02-11 00:00:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:24,214 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:24,214 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:24,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-02-11 00:00:24,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:24,423 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:24,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash 778956719, now seen corresponding path program 75 times [2022-02-11 00:00:24,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:24,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62838302] [2022-02-11 00:00:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:24,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:24,566 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:24,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62838302] [2022-02-11 00:00:24,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62838302] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:24,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881052366] [2022-02-11 00:00:24,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:00:24,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:24,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:24,567 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) [2022-02-11 00:00:24,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-11 00:00:24,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-11 00:00:24,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:24,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:24,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:24,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:24,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881052366] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:24,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:24,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:24,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363447745] [2022-02-11 00:00:24,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:24,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:24,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:24,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:24,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:24,837 INFO L87 Difference]: Start difference. First operand 65820 states and 152812 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:25,540 INFO L93 Difference]: Finished difference Result 78488 states and 182493 transitions. [2022-02-11 00:00:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:25,540 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:25,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:25,743 INFO L225 Difference]: With dead ends: 78488 [2022-02-11 00:00:25,744 INFO L226 Difference]: Without dead ends: 78449 [2022-02-11 00:00:25,744 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:25,744 INFO L934 BasicCegarLoop]: 79 mSDtfsCounter, 67 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:25,744 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1007 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78449 states. [2022-02-11 00:00:27,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78449 to 72894. [2022-02-11 00:00:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72894 states, 72893 states have (on average 2.3292771596723965) internal successors, (169788), 72893 states have internal predecessors, (169788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72894 states to 72894 states and 169788 transitions. [2022-02-11 00:00:27,624 INFO L78 Accepts]: Start accepts. Automaton has 72894 states and 169788 transitions. Word has length 39 [2022-02-11 00:00:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:27,624 INFO L470 AbstractCegarLoop]: Abstraction has 72894 states and 169788 transitions. [2022-02-11 00:00:27,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand 72894 states and 169788 transitions. [2022-02-11 00:00:27,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:27,679 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:27,680 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:27,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-02-11 00:00:27,880 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,SelfDestructingSolverStorable87 [2022-02-11 00:00:27,880 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:27,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1683867963, now seen corresponding path program 76 times [2022-02-11 00:00:27,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:27,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687664347] [2022-02-11 00:00:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:27,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:28,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:28,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687664347] [2022-02-11 00:00:28,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687664347] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:28,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003400146] [2022-02-11 00:00:28,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:00:28,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:28,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:28,068 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) [2022-02-11 00:00:28,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-11 00:00:28,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:00:28,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:28,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:28,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:28,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:28,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003400146] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:28,399 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:28,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:28,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857020011] [2022-02-11 00:00:28,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:28,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:28,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:28,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:28,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:28,400 INFO L87 Difference]: Start difference. First operand 72894 states and 169788 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:29,184 INFO L93 Difference]: Finished difference Result 87303 states and 203711 transitions. [2022-02-11 00:00:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:29,184 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:29,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:29,427 INFO L225 Difference]: With dead ends: 87303 [2022-02-11 00:00:29,427 INFO L226 Difference]: Without dead ends: 87262 [2022-02-11 00:00:29,428 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:29,428 INFO L934 BasicCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:29,428 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 994 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:00:29,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87262 states. [2022-02-11 00:00:31,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87262 to 80806. [2022-02-11 00:00:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80806 states, 80805 states have (on average 2.336897469216014) internal successors, (188833), 80805 states have internal predecessors, (188833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80806 states to 80806 states and 188833 transitions. [2022-02-11 00:00:31,382 INFO L78 Accepts]: Start accepts. Automaton has 80806 states and 188833 transitions. Word has length 39 [2022-02-11 00:00:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:31,382 INFO L470 AbstractCegarLoop]: Abstraction has 80806 states and 188833 transitions. [2022-02-11 00:00:31,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 80806 states and 188833 transitions. [2022-02-11 00:00:31,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:31,441 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:31,441 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:31,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-11 00:00:31,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-02-11 00:00:31,642 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:31,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:31,642 INFO L85 PathProgramCache]: Analyzing trace with hash -210426513, now seen corresponding path program 77 times [2022-02-11 00:00:31,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:31,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61329687] [2022-02-11 00:00:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:31,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:31,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:31,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61329687] [2022-02-11 00:00:31,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61329687] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:31,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629247940] [2022-02-11 00:00:31,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:00:31,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:31,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:31,780 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:00:31,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-11 00:00:31,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-11 00:00:31,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:31,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:31,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:31,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:32,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629247940] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:32,300 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:32,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:32,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408365656] [2022-02-11 00:00:32,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:32,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:32,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:32,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:32,301 INFO L87 Difference]: Start difference. First operand 80806 states and 188833 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:32,869 INFO L93 Difference]: Finished difference Result 97604 states and 228674 transitions. [2022-02-11 00:00:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:33,122 INFO L225 Difference]: With dead ends: 97604 [2022-02-11 00:00:33,122 INFO L226 Difference]: Without dead ends: 97559 [2022-02-11 00:00:33,122 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:33,122 INFO L934 BasicCegarLoop]: 82 mSDtfsCounter, 71 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:33,122 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 1046 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97559 states. [2022-02-11 00:00:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97559 to 89328. [2022-02-11 00:00:35,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89328 states, 89327 states have (on average 2.345035655512891) internal successors, (209475), 89327 states have internal predecessors, (209475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89328 states to 89328 states and 209475 transitions. [2022-02-11 00:00:35,745 INFO L78 Accepts]: Start accepts. Automaton has 89328 states and 209475 transitions. Word has length 39 [2022-02-11 00:00:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:35,746 INFO L470 AbstractCegarLoop]: Abstraction has 89328 states and 209475 transitions. [2022-02-11 00:00:35,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 89328 states and 209475 transitions. [2022-02-11 00:00:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:35,807 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:35,807 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:35,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:36,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-02-11 00:00:36,022 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:36,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash -670427963, now seen corresponding path program 78 times [2022-02-11 00:00:36,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:36,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174954774] [2022-02-11 00:00:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:36,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:36,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:36,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174954774] [2022-02-11 00:00:36,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174954774] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:36,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874056475] [2022-02-11 00:00:36,207 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:00:36,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:36,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:36,224 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:00:36,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-11 00:00:36,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-11 00:00:36,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:36,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:36,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:36,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:36,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874056475] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:36,572 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:36,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:36,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92011457] [2022-02-11 00:00:36,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:36,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:36,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:36,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:36,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:36,573 INFO L87 Difference]: Start difference. First operand 89328 states and 209475 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:37,299 INFO L93 Difference]: Finished difference Result 102528 states and 240016 transitions. [2022-02-11 00:00:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:37,533 INFO L225 Difference]: With dead ends: 102528 [2022-02-11 00:00:37,533 INFO L226 Difference]: Without dead ends: 102492 [2022-02-11 00:00:37,533 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:37,534 INFO L934 BasicCegarLoop]: 78 mSDtfsCounter, 62 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:37,534 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 995 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102492 states. [2022-02-11 00:00:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102492 to 102234. [2022-02-11 00:00:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102234 states, 102233 states have (on average 2.3422280476949715) internal successors, (239453), 102233 states have internal predecessors, (239453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102234 states to 102234 states and 239453 transitions. [2022-02-11 00:00:39,946 INFO L78 Accepts]: Start accepts. Automaton has 102234 states and 239453 transitions. Word has length 39 [2022-02-11 00:00:39,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:39,946 INFO L470 AbstractCegarLoop]: Abstraction has 102234 states and 239453 transitions. [2022-02-11 00:00:39,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:39,946 INFO L276 IsEmpty]: Start isEmpty. Operand 102234 states and 239453 transitions. [2022-02-11 00:00:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:40,025 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:40,025 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:40,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:40,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:40,226 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:40,227 INFO L85 PathProgramCache]: Analyzing trace with hash 946233839, now seen corresponding path program 79 times [2022-02-11 00:00:40,227 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:40,227 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475202164] [2022-02-11 00:00:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:40,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:40,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:40,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475202164] [2022-02-11 00:00:40,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475202164] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:40,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627647383] [2022-02-11 00:00:40,359 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:00:40,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:40,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:40,360 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:00:40,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-11 00:00:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:40,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:40,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:40,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:40,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627647383] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:40,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:40,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:40,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363742894] [2022-02-11 00:00:40,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:40,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:40,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:40,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:40,593 INFO L87 Difference]: Start difference. First operand 102234 states and 239453 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:41,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:41,409 INFO L93 Difference]: Finished difference Result 116836 states and 273500 transitions. [2022-02-11 00:00:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:41,409 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:41,719 INFO L225 Difference]: With dead ends: 116836 [2022-02-11 00:00:41,719 INFO L226 Difference]: Without dead ends: 116800 [2022-02-11 00:00:41,719 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:41,720 INFO L934 BasicCegarLoop]: 78 mSDtfsCounter, 60 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:41,720 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 983 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116800 states. [2022-02-11 00:00:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116800 to 116534. [2022-02-11 00:00:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116534 states, 116533 states have (on average 2.3420404520607896) internal successors, (272925), 116533 states have internal predecessors, (272925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:44,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116534 states to 116534 states and 272925 transitions. [2022-02-11 00:00:44,620 INFO L78 Accepts]: Start accepts. Automaton has 116534 states and 272925 transitions. Word has length 39 [2022-02-11 00:00:44,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:44,620 INFO L470 AbstractCegarLoop]: Abstraction has 116534 states and 272925 transitions. [2022-02-11 00:00:44,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 116534 states and 272925 transitions. [2022-02-11 00:00:44,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:44,708 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:44,709 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:44,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:44,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:44,909 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:44,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1423081605, now seen corresponding path program 80 times [2022-02-11 00:00:44,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:44,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764564363] [2022-02-11 00:00:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:44,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:45,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:45,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764564363] [2022-02-11 00:00:45,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764564363] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:45,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656140426] [2022-02-11 00:00:45,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:00:45,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:45,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:45,055 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:00:45,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-11 00:00:45,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:00:45,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:45,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:45,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:45,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656140426] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:45,303 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:45,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:45,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232391663] [2022-02-11 00:00:45,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:45,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:45,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:45,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:45,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:45,303 INFO L87 Difference]: Start difference. First operand 116534 states and 272925 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:46,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:46,226 INFO L93 Difference]: Finished difference Result 132498 states and 310394 transitions. [2022-02-11 00:00:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:46,227 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:46,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:46,590 INFO L225 Difference]: With dead ends: 132498 [2022-02-11 00:00:46,590 INFO L226 Difference]: Without dead ends: 132462 [2022-02-11 00:00:46,590 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:46,590 INFO L934 BasicCegarLoop]: 78 mSDtfsCounter, 58 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:46,590 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 971 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:00:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132462 states. [2022-02-11 00:00:49,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132462 to 132188. [2022-02-11 00:00:49,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132188 states, 132187 states have (on average 2.3437024820897667) internal successors, (309807), 132187 states have internal predecessors, (309807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132188 states to 132188 states and 309807 transitions. [2022-02-11 00:00:50,374 INFO L78 Accepts]: Start accepts. Automaton has 132188 states and 309807 transitions. Word has length 39 [2022-02-11 00:00:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:50,374 INFO L470 AbstractCegarLoop]: Abstraction has 132188 states and 309807 transitions. [2022-02-11 00:00:50,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 132188 states and 309807 transitions. [2022-02-11 00:00:50,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:00:50,517 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:50,517 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:50,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-02-11 00:00:50,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:50,718 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:50,718 INFO L85 PathProgramCache]: Analyzing trace with hash 857622447, now seen corresponding path program 81 times [2022-02-11 00:00:50,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:50,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506586377] [2022-02-11 00:00:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:50,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:50,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:50,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506586377] [2022-02-11 00:00:50,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506586377] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:50,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194039993] [2022-02-11 00:00:50,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:00:50,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:50,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:50,872 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:00:50,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-11 00:00:50,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 00:00:50,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:50,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:00:50,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:51,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:00:51,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194039993] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:51,164 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:51,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-11 00:00:51,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161690905] [2022-02-11 00:00:51,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:51,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:51,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:51,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:51,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:51,172 INFO L87 Difference]: Start difference. First operand 132188 states and 309807 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:52,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:52,341 INFO L93 Difference]: Finished difference Result 150363 states and 352802 transitions. [2022-02-11 00:00:52,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:00:52,341 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:00:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:52,772 INFO L225 Difference]: With dead ends: 150363 [2022-02-11 00:00:52,772 INFO L226 Difference]: Without dead ends: 150327 [2022-02-11 00:00:52,773 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:52,773 INFO L934 BasicCegarLoop]: 81 mSDtfsCounter, 64 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:52,773 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 1001 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:00:52,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150327 states. [2022-02-11 00:00:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150327 to 150016. [2022-02-11 00:00:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150016 states, 150015 states have (on average 2.3474519214745193) internal successors, (352153), 150015 states have internal predecessors, (352153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150016 states to 150016 states and 352153 transitions. [2022-02-11 00:00:57,016 INFO L78 Accepts]: Start accepts. Automaton has 150016 states and 352153 transitions. Word has length 39 [2022-02-11 00:00:57,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:57,016 INFO L470 AbstractCegarLoop]: Abstraction has 150016 states and 352153 transitions. [2022-02-11 00:00:57,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 150016 states and 352153 transitions. [2022-02-11 00:00:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:00:57,203 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:57,203 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:57,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-11 00:00:57,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:57,419 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:57,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1570930981, now seen corresponding path program 82 times [2022-02-11 00:00:57,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:57,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236094420] [2022-02-11 00:00:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:57,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:57,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:57,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236094420] [2022-02-11 00:00:57,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236094420] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:57,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466045727] [2022-02-11 00:00:57,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:00:57,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:57,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:57,467 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:00:57,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-11 00:00:57,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:00:57,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:57,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:00:57,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:57,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:57,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466045727] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:57,664 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:57,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-11 00:00:57,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696823972] [2022-02-11 00:00:57,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:57,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:00:57,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:57,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:00:57,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:00:57,665 INFO L87 Difference]: Start difference. First operand 150016 states and 352153 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:59,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:59,326 INFO L93 Difference]: Finished difference Result 226299 states and 528421 transitions. [2022-02-11 00:00:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-11 00:00:59,326 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:00:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:00,069 INFO L225 Difference]: With dead ends: 226299 [2022-02-11 00:01:00,070 INFO L226 Difference]: Without dead ends: 226264 [2022-02-11 00:01:00,070 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-02-11 00:01:00,070 INFO L934 BasicCegarLoop]: 34 mSDtfsCounter, 152 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:00,070 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 210 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:01:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226264 states. [2022-02-11 00:01:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226264 to 150011. [2022-02-11 00:01:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150011 states, 150010 states have (on average 2.347463502433171) internal successors, (352143), 150010 states have internal predecessors, (352143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150011 states to 150011 states and 352143 transitions. [2022-02-11 00:01:04,983 INFO L78 Accepts]: Start accepts. Automaton has 150011 states and 352143 transitions. Word has length 42 [2022-02-11 00:01:04,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:04,984 INFO L470 AbstractCegarLoop]: Abstraction has 150011 states and 352143 transitions. [2022-02-11 00:01:04,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand 150011 states and 352143 transitions. [2022-02-11 00:01:05,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:01:05,134 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:05,134 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:05,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-11 00:01:05,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:05,338 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:05,339 INFO L85 PathProgramCache]: Analyzing trace with hash -296701647, now seen corresponding path program 83 times [2022-02-11 00:01:05,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:05,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950492870] [2022-02-11 00:01:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:05,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:05,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:05,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950492870] [2022-02-11 00:01:05,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950492870] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:05,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953407509] [2022-02-11 00:01:05,384 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:01:05,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:05,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:05,385 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:01:05,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-11 00:01:05,409 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 00:01:05,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:05,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:01:05,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:05,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:05,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953407509] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:05,580 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:05,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:01:05,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177797425] [2022-02-11 00:01:05,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:05,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:01:05,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:05,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:01:05,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:01:05,581 INFO L87 Difference]: Start difference. First operand 150011 states and 352143 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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) [2022-02-11 00:01:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:07,750 INFO L93 Difference]: Finished difference Result 263568 states and 616722 transitions. [2022-02-11 00:01:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-11 00:01:07,751 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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 42 [2022-02-11 00:01:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:08,527 INFO L225 Difference]: With dead ends: 263568 [2022-02-11 00:01:08,527 INFO L226 Difference]: Without dead ends: 263552 [2022-02-11 00:01:08,528 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1351, Invalid=3341, Unknown=0, NotChecked=0, Total=4692 [2022-02-11 00:01:08,528 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 512 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:08,528 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 401 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:01:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263552 states. [2022-02-11 00:01:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263552 to 194084. [2022-02-11 00:01:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194084 states, 194083 states have (on average 2.353560074813353) internal successors, (456786), 194083 states have internal predecessors, (456786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194084 states to 194084 states and 456786 transitions. [2022-02-11 00:01:15,184 INFO L78 Accepts]: Start accepts. Automaton has 194084 states and 456786 transitions. Word has length 42 [2022-02-11 00:01:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:15,184 INFO L470 AbstractCegarLoop]: Abstraction has 194084 states and 456786 transitions. [2022-02-11 00:01:15,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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) [2022-02-11 00:01:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 194084 states and 456786 transitions. [2022-02-11 00:01:15,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:01:15,401 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:15,401 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:15,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-02-11 00:01:15,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:15,615 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash -274861175, now seen corresponding path program 84 times [2022-02-11 00:01:15,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:15,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953351488] [2022-02-11 00:01:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:15,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:15,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:15,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953351488] [2022-02-11 00:01:15,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953351488] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:15,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849024880] [2022-02-11 00:01:15,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:01:15,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:15,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:15,680 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:01:15,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-11 00:01:15,702 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:01:15,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:15,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:01:15,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:15,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:15,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849024880] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:15,912 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:15,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:01:15,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246502512] [2022-02-11 00:01:15,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:15,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:01:15,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:15,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:01:15,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:01:15,913 INFO L87 Difference]: Start difference. First operand 194084 states and 456786 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:18,073 INFO L93 Difference]: Finished difference Result 262661 states and 614581 transitions. [2022-02-11 00:01:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 00:01:18,073 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:01:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:18,898 INFO L225 Difference]: With dead ends: 262661 [2022-02-11 00:01:18,898 INFO L226 Difference]: Without dead ends: 262655 [2022-02-11 00:01:18,899 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=571, Invalid=1685, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:01:18,899 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 497 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:18,899 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 377 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:01:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262655 states. [2022-02-11 00:01:24,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262655 to 174969. [2022-02-11 00:01:24,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174969 states, 174968 states have (on average 2.343960038407023) internal successors, (410118), 174968 states have internal predecessors, (410118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174969 states to 174969 states and 410118 transitions. [2022-02-11 00:01:24,931 INFO L78 Accepts]: Start accepts. Automaton has 174969 states and 410118 transitions. Word has length 42 [2022-02-11 00:01:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:24,931 INFO L470 AbstractCegarLoop]: Abstraction has 174969 states and 410118 transitions. [2022-02-11 00:01:24,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 174969 states and 410118 transitions. [2022-02-11 00:01:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:01:25,522 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:25,522 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:25,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-02-11 00:01:25,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-02-11 00:01:25,735 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:25,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:25,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1750523889, now seen corresponding path program 85 times [2022-02-11 00:01:25,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:25,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126600565] [2022-02-11 00:01:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:25,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:25,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:25,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126600565] [2022-02-11 00:01:25,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126600565] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:25,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065251865] [2022-02-11 00:01:25,789 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:01:25,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:25,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:25,804 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:01:25,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-11 00:01:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:25,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:01:25,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:25,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:25,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065251865] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:25,989 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:25,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:01:25,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89655618] [2022-02-11 00:01:25,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:25,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:01:25,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:25,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:01:25,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:01:25,990 INFO L87 Difference]: Start difference. First operand 174969 states and 410118 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:27,709 INFO L93 Difference]: Finished difference Result 249359 states and 582828 transitions. [2022-02-11 00:01:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-11 00:01:27,709 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:01:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:28,834 INFO L225 Difference]: With dead ends: 249359 [2022-02-11 00:01:28,834 INFO L226 Difference]: Without dead ends: 249338 [2022-02-11 00:01:28,834 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=502, Invalid=1568, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:01:28,834 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 439 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:28,834 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 370 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:01:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249338 states. [2022-02-11 00:01:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249338 to 178114. [2022-02-11 00:01:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178114 states, 178113 states have (on average 2.340783659811468) internal successors, (416924), 178113 states have internal predecessors, (416924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178114 states to 178114 states and 416924 transitions. [2022-02-11 00:01:34,545 INFO L78 Accepts]: Start accepts. Automaton has 178114 states and 416924 transitions. Word has length 42 [2022-02-11 00:01:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:34,545 INFO L470 AbstractCegarLoop]: Abstraction has 178114 states and 416924 transitions. [2022-02-11 00:01:34,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 178114 states and 416924 transitions. [2022-02-11 00:01:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:01:34,698 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:34,698 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:34,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-11 00:01:34,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-02-11 00:01:34,898 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:34,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1300838221, now seen corresponding path program 86 times [2022-02-11 00:01:34,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:34,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219870241] [2022-02-11 00:01:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:34,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:34,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:34,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219870241] [2022-02-11 00:01:34,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219870241] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:34,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800615892] [2022-02-11 00:01:34,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:01:34,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:34,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:34,951 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:01:34,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-11 00:01:34,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:01:34,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:34,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:01:34,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:35,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:35,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800615892] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:35,135 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:35,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:01:35,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223190008] [2022-02-11 00:01:35,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:35,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:01:35,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:01:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:01:35,136 INFO L87 Difference]: Start difference. First operand 178114 states and 416924 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:36,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:36,771 INFO L93 Difference]: Finished difference Result 259926 states and 607107 transitions. [2022-02-11 00:01:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 00:01:36,771 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:01:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:37,839 INFO L225 Difference]: With dead ends: 259926 [2022-02-11 00:01:37,839 INFO L226 Difference]: Without dead ends: 259896 [2022-02-11 00:01:37,840 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=452, Invalid=1440, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 00:01:37,840 INFO L934 BasicCegarLoop]: 36 mSDtfsCounter, 444 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:37,840 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 303 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:01:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259896 states. [2022-02-11 00:01:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259896 to 179160. [2022-02-11 00:01:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179160 states, 179159 states have (on average 2.339781981368505) internal successors, (419193), 179159 states have internal predecessors, (419193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179160 states to 179160 states and 419193 transitions. [2022-02-11 00:01:44,097 INFO L78 Accepts]: Start accepts. Automaton has 179160 states and 419193 transitions. Word has length 42 [2022-02-11 00:01:44,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:44,097 INFO L470 AbstractCegarLoop]: Abstraction has 179160 states and 419193 transitions. [2022-02-11 00:01:44,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:44,097 INFO L276 IsEmpty]: Start isEmpty. Operand 179160 states and 419193 transitions. [2022-02-11 00:01:44,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:01:44,264 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:44,264 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:44,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-11 00:01:44,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-02-11 00:01:44,464 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:44,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash 718099057, now seen corresponding path program 87 times [2022-02-11 00:01:44,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:44,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493229052] [2022-02-11 00:01:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:44,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:44,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:44,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493229052] [2022-02-11 00:01:44,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493229052] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:44,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284460891] [2022-02-11 00:01:44,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:01:44,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:44,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:44,513 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:01:44,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-11 00:01:44,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:01:44,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:44,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:01:44,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:44,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:44,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284460891] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:44,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:44,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:01:44,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323663246] [2022-02-11 00:01:44,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:44,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:01:44,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:01:44,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:01:44,700 INFO L87 Difference]: Start difference. First operand 179160 states and 419193 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:46,321 INFO L93 Difference]: Finished difference Result 242639 states and 565800 transitions. [2022-02-11 00:01:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 00:01:46,322 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:01:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:47,517 INFO L225 Difference]: With dead ends: 242639 [2022-02-11 00:01:47,518 INFO L226 Difference]: Without dead ends: 242609 [2022-02-11 00:01:47,518 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2022-02-11 00:01:47,518 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 428 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:47,518 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 190 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:01:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242609 states. [2022-02-11 00:01:52,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242609 to 179160. [2022-02-11 00:01:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179160 states, 179159 states have (on average 2.339625695611161) internal successors, (419165), 179159 states have internal predecessors, (419165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179160 states to 179160 states and 419165 transitions. [2022-02-11 00:01:53,794 INFO L78 Accepts]: Start accepts. Automaton has 179160 states and 419165 transitions. Word has length 42 [2022-02-11 00:01:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:53,794 INFO L470 AbstractCegarLoop]: Abstraction has 179160 states and 419165 transitions. [2022-02-11 00:01:53,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:01:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 179160 states and 419165 transitions. [2022-02-11 00:01:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:01:54,006 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:54,006 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:54,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-11 00:01:54,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:54,207 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:54,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1661668781, now seen corresponding path program 88 times [2022-02-11 00:01:54,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:54,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903545176] [2022-02-11 00:01:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:54,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:54,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:54,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903545176] [2022-02-11 00:01:54,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903545176] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:54,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918537254] [2022-02-11 00:01:54,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:01:54,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:54,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:54,258 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:01:54,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-11 00:01:54,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:01:54,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:54,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:01:54,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:54,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:54,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918537254] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:54,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:54,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-11 00:01:54,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551013543] [2022-02-11 00:01:54,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:54,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:01:54,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:54,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:01:54,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:01:54,445 INFO L87 Difference]: Start difference. First operand 179160 states and 419165 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) 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) [2022-02-11 00:01:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:55,932 INFO L93 Difference]: Finished difference Result 202152 states and 475430 transitions. [2022-02-11 00:01:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-11 00:01:55,933 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) 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 42 [2022-02-11 00:01:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:56,935 INFO L225 Difference]: With dead ends: 202152 [2022-02-11 00:01:56,935 INFO L226 Difference]: Without dead ends: 202152 [2022-02-11 00:01:56,935 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2022-02-11 00:01:56,935 INFO L934 BasicCegarLoop]: 64 mSDtfsCounter, 146 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:56,935 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 320 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:01:57,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202152 states. [2022-02-11 00:02:01,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202152 to 179520. [2022-02-11 00:02:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179520 states, 179519 states have (on average 2.3398581765718394) internal successors, (420049), 179519 states have internal predecessors, (420049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179520 states to 179520 states and 420049 transitions. [2022-02-11 00:02:02,394 INFO L78 Accepts]: Start accepts. Automaton has 179520 states and 420049 transitions. Word has length 42 [2022-02-11 00:02:02,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:02,394 INFO L470 AbstractCegarLoop]: Abstraction has 179520 states and 420049 transitions. [2022-02-11 00:02:02,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) 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) [2022-02-11 00:02:02,394 INFO L276 IsEmpty]: Start isEmpty. Operand 179520 states and 420049 transitions. [2022-02-11 00:02:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:02:02,583 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:02,583 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:02,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-02-11 00:02:02,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:02,786 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:02,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash 988254481, now seen corresponding path program 89 times [2022-02-11 00:02:02,786 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:02,786 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098069805] [2022-02-11 00:02:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:02,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:02,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:02,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098069805] [2022-02-11 00:02:02,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098069805] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:02,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551704109] [2022-02-11 00:02:02,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:02:02,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:02,830 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:02:02,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-11 00:02:02,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:02:02,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:02,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:02:02,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:02,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:03,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551704109] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:03,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:03,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:02:03,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389146700] [2022-02-11 00:02:03,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:03,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:02:03,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:02:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:02:03,035 INFO L87 Difference]: Start difference. First operand 179520 states and 420049 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:02:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:04,294 INFO L93 Difference]: Finished difference Result 189300 states and 440992 transitions. [2022-02-11 00:02:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-11 00:02:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 42 [2022-02-11 00:02:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:05,159 INFO L225 Difference]: With dead ends: 189300 [2022-02-11 00:02:05,159 INFO L226 Difference]: Without dead ends: 189300 [2022-02-11 00:02:05,159 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2022-02-11 00:02:05,159 INFO L934 BasicCegarLoop]: 64 mSDtfsCounter, 141 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:05,159 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 377 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:02:05,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189300 states. [2022-02-11 00:02:08,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189300 to 179838. [2022-02-11 00:02:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179838 states, 179837 states have (on average 2.339841078309803) internal successors, (420790), 179837 states have internal predecessors, (420790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179838 states to 179838 states and 420790 transitions. [2022-02-11 00:02:09,698 INFO L78 Accepts]: Start accepts. Automaton has 179838 states and 420790 transitions. Word has length 42 [2022-02-11 00:02:09,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:09,699 INFO L470 AbstractCegarLoop]: Abstraction has 179838 states and 420790 transitions. [2022-02-11 00:02:09,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:02:09,699 INFO L276 IsEmpty]: Start isEmpty. Operand 179838 states and 420790 transitions. [2022-02-11 00:02:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:02:10,297 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:10,297 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:10,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-11 00:02:10,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-02-11 00:02:10,498 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1982228519, now seen corresponding path program 90 times [2022-02-11 00:02:10,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:10,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400479138] [2022-02-11 00:02:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:10,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:10,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:10,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400479138] [2022-02-11 00:02:10,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400479138] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:10,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733347459] [2022-02-11 00:02:10,549 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:02:10,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:10,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:10,550 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:02:10,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-11 00:02:10,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 00:02:10,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:10,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:02:10,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:10,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:10,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733347459] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:10,751 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:10,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:02:10,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257555705] [2022-02-11 00:02:10,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:10,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:02:10,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:10,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:02:10,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:02:10,752 INFO L87 Difference]: Start difference. First operand 179838 states and 420790 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:02:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:12,258 INFO L93 Difference]: Finished difference Result 192275 states and 447493 transitions. [2022-02-11 00:02:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 00:02:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 42 [2022-02-11 00:02:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:12,821 INFO L225 Difference]: With dead ends: 192275 [2022-02-11 00:02:12,821 INFO L226 Difference]: Without dead ends: 192275 [2022-02-11 00:02:12,821 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=814, Invalid=1838, Unknown=0, NotChecked=0, Total=2652 [2022-02-11 00:02:12,821 INFO L934 BasicCegarLoop]: 77 mSDtfsCounter, 155 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:12,821 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 598 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:02:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192275 states. [2022-02-11 00:02:17,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192275 to 181105. [2022-02-11 00:02:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181105 states, 181104 states have (on average 2.3396667108401803) internal successors, (423723), 181104 states have internal predecessors, (423723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181105 states to 181105 states and 423723 transitions. [2022-02-11 00:02:18,021 INFO L78 Accepts]: Start accepts. Automaton has 181105 states and 423723 transitions. Word has length 42 [2022-02-11 00:02:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:18,022 INFO L470 AbstractCegarLoop]: Abstraction has 181105 states and 423723 transitions. [2022-02-11 00:02:18,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:02:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 181105 states and 423723 transitions. [2022-02-11 00:02:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:02:18,662 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:18,662 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:18,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-02-11 00:02:18,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-02-11 00:02:18,878 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:18,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1567249569, now seen corresponding path program 91 times [2022-02-11 00:02:18,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:18,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334804793] [2022-02-11 00:02:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:18,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:18,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334804793] [2022-02-11 00:02:18,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334804793] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:18,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071902953] [2022-02-11 00:02:18,920 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:02:18,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:18,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:18,921 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:02:18,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-11 00:02:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:18,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:02:18,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:19,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:19,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071902953] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:19,131 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:19,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:02:19,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979296595] [2022-02-11 00:02:19,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:19,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:02:19,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:19,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:02:19,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:02:19,132 INFO L87 Difference]: Start difference. First operand 181105 states and 423723 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:02:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:20,851 INFO L93 Difference]: Finished difference Result 196121 states and 456416 transitions. [2022-02-11 00:02:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-11 00:02:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 42 [2022-02-11 00:02:20,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:21,484 INFO L225 Difference]: With dead ends: 196121 [2022-02-11 00:02:21,484 INFO L226 Difference]: Without dead ends: 196121 [2022-02-11 00:02:21,484 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1028, Invalid=2278, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 00:02:21,484 INFO L934 BasicCegarLoop]: 95 mSDtfsCounter, 162 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:21,484 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 750 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:02:21,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196121 states. [2022-02-11 00:02:26,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196121 to 182402. [2022-02-11 00:02:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182402 states, 182401 states have (on average 2.3401680911837106) internal successors, (426849), 182401 states have internal predecessors, (426849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182402 states to 182402 states and 426849 transitions. [2022-02-11 00:02:27,435 INFO L78 Accepts]: Start accepts. Automaton has 182402 states and 426849 transitions. Word has length 42 [2022-02-11 00:02:27,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:27,435 INFO L470 AbstractCegarLoop]: Abstraction has 182402 states and 426849 transitions. [2022-02-11 00:02:27,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:02:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 182402 states and 426849 transitions. [2022-02-11 00:02:27,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:02:27,658 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:27,658 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:27,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-11 00:02:27,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-11 00:02:27,865 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:27,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:27,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1750746985, now seen corresponding path program 92 times [2022-02-11 00:02:27,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:27,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066425126] [2022-02-11 00:02:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:27,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:27,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:27,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066425126] [2022-02-11 00:02:27,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066425126] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:27,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677192120] [2022-02-11 00:02:27,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:02:27,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:27,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:27,922 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:02:27,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-11 00:02:28,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:02:28,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:28,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:02:28,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:28,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:28,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677192120] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:28,293 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:28,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:02:28,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744583201] [2022-02-11 00:02:28,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:28,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:02:28,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:02:28,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:02:28,294 INFO L87 Difference]: Start difference. First operand 182402 states and 426849 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:02:30,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:30,630 INFO L93 Difference]: Finished difference Result 200311 states and 466916 transitions. [2022-02-11 00:02:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 00:02:30,631 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 42 [2022-02-11 00:02:30,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:31,313 INFO L225 Difference]: With dead ends: 200311 [2022-02-11 00:02:31,313 INFO L226 Difference]: Without dead ends: 200311 [2022-02-11 00:02:31,313 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1199, Invalid=2341, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 00:02:31,314 INFO L934 BasicCegarLoop]: 84 mSDtfsCounter, 220 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:31,314 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 642 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:02:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200311 states. [2022-02-11 00:02:35,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200311 to 188319. [2022-02-11 00:02:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188319 states, 188318 states have (on average 2.3444386622627684) internal successors, (441500), 188318 states have internal predecessors, (441500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188319 states to 188319 states and 441500 transitions. [2022-02-11 00:02:36,719 INFO L78 Accepts]: Start accepts. Automaton has 188319 states and 441500 transitions. Word has length 42 [2022-02-11 00:02:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:36,719 INFO L470 AbstractCegarLoop]: Abstraction has 188319 states and 441500 transitions. [2022-02-11 00:02:36,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:02:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 188319 states and 441500 transitions. [2022-02-11 00:02:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:02:37,375 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:37,375 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:37,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-02-11 00:02:37,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:37,576 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:37,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:37,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1772587457, now seen corresponding path program 93 times [2022-02-11 00:02:37,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:37,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916506824] [2022-02-11 00:02:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:37,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:37,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:37,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916506824] [2022-02-11 00:02:37,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916506824] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:37,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540422872] [2022-02-11 00:02:37,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:02:37,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:37,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:37,633 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:02:37,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-11 00:02:37,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-11 00:02:37,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:37,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:02:37,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:37,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:37,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540422872] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:37,852 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:37,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:02:37,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692878692] [2022-02-11 00:02:37,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:37,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:02:37,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:37,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:02:37,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:02:37,853 INFO L87 Difference]: Start difference. First operand 188319 states and 441500 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:39,396 INFO L93 Difference]: Finished difference Result 197697 states and 461177 transitions. [2022-02-11 00:02:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 00:02:39,396 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:02:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:40,036 INFO L225 Difference]: With dead ends: 197697 [2022-02-11 00:02:40,036 INFO L226 Difference]: Without dead ends: 197691 [2022-02-11 00:02:40,036 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=781, Invalid=1475, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:40,036 INFO L934 BasicCegarLoop]: 94 mSDtfsCounter, 183 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:40,037 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 651 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:02:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197691 states. [2022-02-11 00:02:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197691 to 177359. [2022-02-11 00:02:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177359 states, 177358 states have (on average 2.337272635009416) internal successors, (414534), 177358 states have internal predecessors, (414534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177359 states to 177359 states and 414534 transitions. [2022-02-11 00:02:44,824 INFO L78 Accepts]: Start accepts. Automaton has 177359 states and 414534 transitions. Word has length 42 [2022-02-11 00:02:44,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:44,824 INFO L470 AbstractCegarLoop]: Abstraction has 177359 states and 414534 transitions. [2022-02-11 00:02:44,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand 177359 states and 414534 transitions. [2022-02-11 00:02:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:02:45,412 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:45,412 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:45,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-02-11 00:02:45,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:45,612 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:45,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:45,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1943317869, now seen corresponding path program 94 times [2022-02-11 00:02:45,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:45,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703782514] [2022-02-11 00:02:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:45,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:45,667 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:45,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703782514] [2022-02-11 00:02:45,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703782514] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:45,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984975326] [2022-02-11 00:02:45,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:02:45,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:45,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:45,669 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:02:45,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-11 00:02:45,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:02:45,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:45,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:02:45,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:45,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:45,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984975326] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:45,908 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:45,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-02-11 00:02:45,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916451755] [2022-02-11 00:02:45,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:45,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-11 00:02:45,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-11 00:02:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:02:45,909 INFO L87 Difference]: Start difference. First operand 177359 states and 414534 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:47,295 INFO L93 Difference]: Finished difference Result 182720 states and 426344 transitions. [2022-02-11 00:02:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-11 00:02:47,296 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:02:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:47,814 INFO L225 Difference]: With dead ends: 182720 [2022-02-11 00:02:47,814 INFO L226 Difference]: Without dead ends: 182720 [2022-02-11 00:02:47,814 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=631, Invalid=1439, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:02:47,814 INFO L934 BasicCegarLoop]: 67 mSDtfsCounter, 163 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:47,814 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 585 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:02:48,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182720 states. [2022-02-11 00:02:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182720 to 177202. [2022-02-11 00:02:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177202 states, 177201 states have (on average 2.337311866185857) internal successors, (414174), 177201 states have internal predecessors, (414174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177202 states to 177202 states and 414174 transitions. [2022-02-11 00:02:52,591 INFO L78 Accepts]: Start accepts. Automaton has 177202 states and 414174 transitions. Word has length 42 [2022-02-11 00:02:52,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:52,591 INFO L470 AbstractCegarLoop]: Abstraction has 177202 states and 414174 transitions. [2022-02-11 00:02:52,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand 177202 states and 414174 transitions. [2022-02-11 00:02:52,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:02:52,779 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:52,779 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:52,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-02-11 00:02:52,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-02-11 00:02:52,980 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1026625645, now seen corresponding path program 95 times [2022-02-11 00:02:52,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:52,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505798205] [2022-02-11 00:02:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:52,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:53,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:53,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505798205] [2022-02-11 00:02:53,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505798205] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:53,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462452737] [2022-02-11 00:02:53,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:02:53,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:53,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:53,024 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:02:53,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-11 00:02:53,076 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:02:53,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:53,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:02:53,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:53,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:53,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462452737] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:53,259 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:53,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-11 00:02:53,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409191175] [2022-02-11 00:02:53,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:53,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:02:53,260 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:53,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:02:53,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:02:53,260 INFO L87 Difference]: Start difference. First operand 177202 states and 414174 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:55,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:55,055 INFO L93 Difference]: Finished difference Result 185132 states and 432043 transitions. [2022-02-11 00:02:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 00:02:55,056 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:02:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:55,620 INFO L225 Difference]: With dead ends: 185132 [2022-02-11 00:02:55,620 INFO L226 Difference]: Without dead ends: 185128 [2022-02-11 00:02:55,620 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=682, Invalid=1574, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:55,620 INFO L934 BasicCegarLoop]: 80 mSDtfsCounter, 161 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:55,621 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 525 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:02:55,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185128 states. [2022-02-11 00:02:59,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185128 to 177658. [2022-02-11 00:02:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177658 states, 177657 states have (on average 2.337532436098775) internal successors, (415279), 177657 states have internal predecessors, (415279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:00,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177658 states to 177658 states and 415279 transitions. [2022-02-11 00:03:00,941 INFO L78 Accepts]: Start accepts. Automaton has 177658 states and 415279 transitions. Word has length 42 [2022-02-11 00:03:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:00,941 INFO L470 AbstractCegarLoop]: Abstraction has 177658 states and 415279 transitions. [2022-02-11 00:03:00,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 177658 states and 415279 transitions. [2022-02-11 00:03:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:03:01,152 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:01,153 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:01,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-02-11 00:03:01,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:01,367 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash -799820947, now seen corresponding path program 96 times [2022-02-11 00:03:01,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:01,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249167723] [2022-02-11 00:03:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:01,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:01,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:01,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249167723] [2022-02-11 00:03:01,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249167723] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:01,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192821210] [2022-02-11 00:03:01,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:03:01,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:01,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:01,408 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:03:01,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-11 00:03:01,431 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 00:03:01,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:01,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:03:01,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:01,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:01,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192821210] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:01,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:01,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-11 00:03:01,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866141920] [2022-02-11 00:03:01,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:01,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:03:01,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:01,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:03:01,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:03:01,669 INFO L87 Difference]: Start difference. First operand 177658 states and 415279 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:03,572 INFO L93 Difference]: Finished difference Result 195307 states and 455454 transitions. [2022-02-11 00:03:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-11 00:03:03,572 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:03:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:04,445 INFO L225 Difference]: With dead ends: 195307 [2022-02-11 00:03:04,445 INFO L226 Difference]: Without dead ends: 195305 [2022-02-11 00:03:04,445 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=983, Invalid=2097, Unknown=0, NotChecked=0, Total=3080 [2022-02-11 00:03:04,445 INFO L934 BasicCegarLoop]: 89 mSDtfsCounter, 183 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:04,445 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 628 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:03:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195305 states. [2022-02-11 00:03:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195305 to 178561. [2022-02-11 00:03:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178561 states, 178560 states have (on average 2.3364975358422937) internal successors, (417205), 178560 states have internal predecessors, (417205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178561 states to 178561 states and 417205 transitions. [2022-02-11 00:03:09,523 INFO L78 Accepts]: Start accepts. Automaton has 178561 states and 417205 transitions. Word has length 42 [2022-02-11 00:03:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:09,523 INFO L470 AbstractCegarLoop]: Abstraction has 178561 states and 417205 transitions. [2022-02-11 00:03:09,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 178561 states and 417205 transitions. [2022-02-11 00:03:09,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:03:09,700 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:09,700 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:09,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-11 00:03:09,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:09,901 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:09,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1897097619, now seen corresponding path program 97 times [2022-02-11 00:03:09,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:09,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195259772] [2022-02-11 00:03:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:09,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:09,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:09,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195259772] [2022-02-11 00:03:09,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195259772] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:09,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54005587] [2022-02-11 00:03:09,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:03:09,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:09,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:09,942 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:03:09,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-11 00:03:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:09,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:03:09,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:10,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:10,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54005587] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:10,154 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:10,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-11 00:03:10,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795244823] [2022-02-11 00:03:10,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:10,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:03:10,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:10,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:03:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:03:10,155 INFO L87 Difference]: Start difference. First operand 178561 states and 417205 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:11,826 INFO L93 Difference]: Finished difference Result 196641 states and 459242 transitions. [2022-02-11 00:03:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 00:03:11,826 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:03:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:12,686 INFO L225 Difference]: With dead ends: 196641 [2022-02-11 00:03:12,686 INFO L226 Difference]: Without dead ends: 196641 [2022-02-11 00:03:12,687 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1190, Invalid=2350, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 00:03:12,687 INFO L934 BasicCegarLoop]: 73 mSDtfsCounter, 250 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:12,687 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 520 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:03:12,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196641 states. [2022-02-11 00:03:16,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196641 to 186345. [2022-02-11 00:03:16,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186345 states, 186344 states have (on average 2.3404187953462414) internal successors, (436123), 186344 states have internal predecessors, (436123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186345 states to 186345 states and 436123 transitions. [2022-02-11 00:03:17,486 INFO L78 Accepts]: Start accepts. Automaton has 186345 states and 436123 transitions. Word has length 42 [2022-02-11 00:03:17,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:17,487 INFO L470 AbstractCegarLoop]: Abstraction has 186345 states and 436123 transitions. [2022-02-11 00:03:17,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand 186345 states and 436123 transitions. [2022-02-11 00:03:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:03:17,674 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:17,674 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:17,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-11 00:03:17,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:17,875 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:17,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:17,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1875257147, now seen corresponding path program 98 times [2022-02-11 00:03:17,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:17,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526454945] [2022-02-11 00:03:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:17,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:03:17,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:17,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526454945] [2022-02-11 00:03:17,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526454945] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:17,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594891324] [2022-02-11 00:03:17,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:03:17,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:17,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:17,918 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:03:17,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-11 00:03:17,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:03:17,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:17,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:03:17,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:18,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:03:18,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594891324] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:18,116 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:18,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-11 00:03:18,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330902812] [2022-02-11 00:03:18,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:18,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:03:18,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:03:18,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:03:18,117 INFO L87 Difference]: Start difference. First operand 186345 states and 436123 transitions. Second operand has 16 states, 16 states have (on average 4.0) 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) [2022-02-11 00:03:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:19,830 INFO L93 Difference]: Finished difference Result 193656 states and 452536 transitions. [2022-02-11 00:03:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 00:03:19,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) 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 42 [2022-02-11 00:03:19,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:20,386 INFO L225 Difference]: With dead ends: 193656 [2022-02-11 00:03:20,387 INFO L226 Difference]: Without dead ends: 193647 [2022-02-11 00:03:20,387 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=847, Invalid=1703, Unknown=0, NotChecked=0, Total=2550 [2022-02-11 00:03:20,387 INFO L934 BasicCegarLoop]: 90 mSDtfsCounter, 238 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:20,387 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 590 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:03:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193647 states. [2022-02-11 00:03:24,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193647 to 163085. [2022-02-11 00:03:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163085 states, 163084 states have (on average 2.331945500478281) internal successors, (380303), 163084 states have internal predecessors, (380303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163085 states to 163085 states and 380303 transitions. [2022-02-11 00:03:25,196 INFO L78 Accepts]: Start accepts. Automaton has 163085 states and 380303 transitions. Word has length 42 [2022-02-11 00:03:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:25,196 INFO L470 AbstractCegarLoop]: Abstraction has 163085 states and 380303 transitions. [2022-02-11 00:03:25,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) 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) [2022-02-11 00:03:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 163085 states and 380303 transitions. [2022-02-11 00:03:25,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:03:25,337 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:25,337 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:25,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-11 00:03:25,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2022-02-11 00:03:25,538 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:25,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:25,538 INFO L85 PathProgramCache]: Analyzing trace with hash 150127917, now seen corresponding path program 99 times [2022-02-11 00:03:25,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:25,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26693123] [2022-02-11 00:03:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:25,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:25,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:25,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26693123] [2022-02-11 00:03:25,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26693123] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:25,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54476050] [2022-02-11 00:03:25,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:03:25,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:25,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:25,584 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:03:25,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-11 00:03:25,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-11 00:03:25,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:25,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:03:25,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:25,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:25,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54476050] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:25,784 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:25,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-02-11 00:03:25,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72819304] [2022-02-11 00:03:25,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:25,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-11 00:03:25,785 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:25,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-11 00:03:25,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:03:25,785 INFO L87 Difference]: Start difference. First operand 163085 states and 380303 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) 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) [2022-02-11 00:03:27,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:27,148 INFO L93 Difference]: Finished difference Result 172013 states and 400786 transitions. [2022-02-11 00:03:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 00:03:27,148 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) 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 42 [2022-02-11 00:03:27,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:27,625 INFO L225 Difference]: With dead ends: 172013 [2022-02-11 00:03:27,625 INFO L226 Difference]: Without dead ends: 171989 [2022-02-11 00:03:27,625 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=776, Invalid=1674, Unknown=0, NotChecked=0, Total=2450 [2022-02-11 00:03:27,625 INFO L934 BasicCegarLoop]: 78 mSDtfsCounter, 223 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:27,625 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 477 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:03:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171989 states. [2022-02-11 00:03:31,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171989 to 157860. [2022-02-11 00:03:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157860 states, 157859 states have (on average 2.3348811280953257) internal successors, (368582), 157859 states have internal predecessors, (368582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157860 states to 157860 states and 368582 transitions. [2022-02-11 00:03:32,044 INFO L78 Accepts]: Start accepts. Automaton has 157860 states and 368582 transitions. Word has length 42 [2022-02-11 00:03:32,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:32,044 INFO L470 AbstractCegarLoop]: Abstraction has 157860 states and 368582 transitions. [2022-02-11 00:03:32,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) 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) [2022-02-11 00:03:32,044 INFO L276 IsEmpty]: Start isEmpty. Operand 157860 states and 368582 transitions. [2022-02-11 00:03:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:03:32,328 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:32,328 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:32,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-02-11 00:03:32,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:32,543 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:32,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1861230643, now seen corresponding path program 100 times [2022-02-11 00:03:32,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:32,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257290023] [2022-02-11 00:03:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:32,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:32,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257290023] [2022-02-11 00:03:32,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257290023] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:32,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758911297] [2022-02-11 00:03:32,604 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:03:32,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:32,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:32,606 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:03:32,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-11 00:03:32,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:03:32,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:32,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:03:32,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:32,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:32,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758911297] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:32,882 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:32,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-02-11 00:03:32,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948122975] [2022-02-11 00:03:32,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:32,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-11 00:03:32,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:32,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-11 00:03:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:03:32,892 INFO L87 Difference]: Start difference. First operand 157860 states and 368582 transitions. Second operand has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:34,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:34,256 INFO L93 Difference]: Finished difference Result 162017 states and 377497 transitions. [2022-02-11 00:03:34,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-11 00:03:34,256 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:03:34,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:34,686 INFO L225 Difference]: With dead ends: 162017 [2022-02-11 00:03:34,686 INFO L226 Difference]: Without dead ends: 162017 [2022-02-11 00:03:34,686 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=676, Invalid=1676, Unknown=0, NotChecked=0, Total=2352 [2022-02-11 00:03:34,687 INFO L934 BasicCegarLoop]: 67 mSDtfsCounter, 172 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:34,687 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 539 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:03:34,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162017 states. [2022-02-11 00:03:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162017 to 157341. [2022-02-11 00:03:37,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157341 states, 157340 states have (on average 2.3348290326681074) internal successors, (367362), 157340 states have internal predecessors, (367362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157341 states to 157341 states and 367362 transitions. [2022-02-11 00:03:38,563 INFO L78 Accepts]: Start accepts. Automaton has 157341 states and 367362 transitions. Word has length 42 [2022-02-11 00:03:38,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:38,564 INFO L470 AbstractCegarLoop]: Abstraction has 157341 states and 367362 transitions. [2022-02-11 00:03:38,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:38,564 INFO L276 IsEmpty]: Start isEmpty. Operand 157341 states and 367362 transitions. [2022-02-11 00:03:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:03:38,689 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:38,689 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:38,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-11 00:03:38,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:38,890 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1576314091, now seen corresponding path program 101 times [2022-02-11 00:03:38,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:38,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679570219] [2022-02-11 00:03:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:38,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:38,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:38,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679570219] [2022-02-11 00:03:38,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679570219] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:38,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345507217] [2022-02-11 00:03:38,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:03:38,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:38,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:38,928 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:03:38,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-11 00:03:38,948 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:03:38,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:38,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:03:38,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:39,083 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:39,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:39,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345507217] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:39,139 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:39,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 17 [2022-02-11 00:03:39,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700633429] [2022-02-11 00:03:39,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:39,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-11 00:03:39,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-11 00:03:39,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:03:39,139 INFO L87 Difference]: Start difference. First operand 157341 states and 367362 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:40,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:40,496 INFO L93 Difference]: Finished difference Result 173122 states and 403315 transitions. [2022-02-11 00:03:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 00:03:40,496 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:03:40,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:41,155 INFO L225 Difference]: With dead ends: 173122 [2022-02-11 00:03:41,156 INFO L226 Difference]: Without dead ends: 173118 [2022-02-11 00:03:41,156 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=732, Invalid=1718, Unknown=0, NotChecked=0, Total=2450 [2022-02-11 00:03:41,156 INFO L934 BasicCegarLoop]: 74 mSDtfsCounter, 174 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:41,156 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 596 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:03:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173118 states. [2022-02-11 00:03:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173118 to 156556. [2022-02-11 00:03:44,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156556 states, 156555 states have (on average 2.335537031714094) internal successors, (365640), 156555 states have internal predecessors, (365640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156556 states to 156556 states and 365640 transitions. [2022-02-11 00:03:45,173 INFO L78 Accepts]: Start accepts. Automaton has 156556 states and 365640 transitions. Word has length 42 [2022-02-11 00:03:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:45,173 INFO L470 AbstractCegarLoop]: Abstraction has 156556 states and 365640 transitions. [2022-02-11 00:03:45,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 156556 states and 365640 transitions. [2022-02-11 00:03:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:03:45,306 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:45,306 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:45,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-02-11 00:03:45,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-02-11 00:03:45,507 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:45,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:45,507 INFO L85 PathProgramCache]: Analyzing trace with hash 116845661, now seen corresponding path program 102 times [2022-02-11 00:03:45,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:45,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847314040] [2022-02-11 00:03:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:45,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:45,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:45,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847314040] [2022-02-11 00:03:45,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847314040] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:45,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673924544] [2022-02-11 00:03:45,546 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:03:45,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:45,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:45,547 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:03:45,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-11 00:03:45,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-11 00:03:45,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:45,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:03:45,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:45,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:45,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673924544] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:45,756 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:45,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-11 00:03:45,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513861372] [2022-02-11 00:03:45,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:45,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:03:45,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:03:45,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:03:45,757 INFO L87 Difference]: Start difference. First operand 156556 states and 365640 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:47,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:47,166 INFO L93 Difference]: Finished difference Result 193498 states and 452131 transitions. [2022-02-11 00:03:47,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-11 00:03:47,166 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:03:47,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:47,710 INFO L225 Difference]: With dead ends: 193498 [2022-02-11 00:03:47,711 INFO L226 Difference]: Without dead ends: 193498 [2022-02-11 00:03:47,711 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=975, Invalid=1995, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 00:03:47,711 INFO L934 BasicCegarLoop]: 77 mSDtfsCounter, 215 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:47,711 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 549 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:03:48,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193498 states. [2022-02-11 00:03:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193498 to 159213. [2022-02-11 00:03:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159213 states, 159212 states have (on average 2.336457050976057) internal successors, (371992), 159212 states have internal predecessors, (371992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159213 states to 159213 states and 371992 transitions. [2022-02-11 00:03:52,086 INFO L78 Accepts]: Start accepts. Automaton has 159213 states and 371992 transitions. Word has length 42 [2022-02-11 00:03:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:52,086 INFO L470 AbstractCegarLoop]: Abstraction has 159213 states and 371992 transitions. [2022-02-11 00:03:52,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 159213 states and 371992 transitions. [2022-02-11 00:03:52,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:03:52,206 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:52,206 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:52,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-11 00:03:52,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-02-11 00:03:52,407 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:52,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash 588977061, now seen corresponding path program 103 times [2022-02-11 00:03:52,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:52,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230842123] [2022-02-11 00:03:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:52,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:52,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:52,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230842123] [2022-02-11 00:03:52,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230842123] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:52,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529069676] [2022-02-11 00:03:52,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:03:52,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:52,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:52,440 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:03:52,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-11 00:03:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:52,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:03:52,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:52,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:52,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529069676] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:52,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:52,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-11 00:03:52,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120879074] [2022-02-11 00:03:52,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:52,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:03:52,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:03:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:03:52,656 INFO L87 Difference]: Start difference. First operand 159213 states and 371992 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:54,241 INFO L93 Difference]: Finished difference Result 194997 states and 454998 transitions. [2022-02-11 00:03:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-11 00:03:54,241 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:03:54,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:54,956 INFO L225 Difference]: With dead ends: 194997 [2022-02-11 00:03:54,956 INFO L226 Difference]: Without dead ends: 194997 [2022-02-11 00:03:54,956 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1526, Invalid=3030, Unknown=0, NotChecked=0, Total=4556 [2022-02-11 00:03:54,956 INFO L934 BasicCegarLoop]: 63 mSDtfsCounter, 274 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:54,956 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 456 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:03:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194997 states. [2022-02-11 00:03:58,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194997 to 173187. [2022-02-11 00:03:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173187 states, 173186 states have (on average 2.3396637141570333) internal successors, (405197), 173186 states have internal predecessors, (405197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:59,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173187 states to 173187 states and 405197 transitions. [2022-02-11 00:03:59,524 INFO L78 Accepts]: Start accepts. Automaton has 173187 states and 405197 transitions. Word has length 42 [2022-02-11 00:03:59,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:59,524 INFO L470 AbstractCegarLoop]: Abstraction has 173187 states and 405197 transitions. [2022-02-11 00:03:59,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:59,525 INFO L276 IsEmpty]: Start isEmpty. Operand 173187 states and 405197 transitions. [2022-02-11 00:03:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:03:59,674 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:59,674 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:59,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-02-11 00:03:59,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:59,875 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:59,875 INFO L85 PathProgramCache]: Analyzing trace with hash 610817533, now seen corresponding path program 104 times [2022-02-11 00:03:59,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:59,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777144579] [2022-02-11 00:03:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:59,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:03:59,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:59,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777144579] [2022-02-11 00:03:59,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777144579] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:59,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498045047] [2022-02-11 00:03:59,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:03:59,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:59,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:59,912 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:03:59,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-11 00:03:59,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:03:59,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:59,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:03:59,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:00,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:04:00,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498045047] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:00,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:00,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-11 00:04:00,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185509697] [2022-02-11 00:04:00,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:00,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:04:00,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:00,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:04:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:04:00,124 INFO L87 Difference]: Start difference. First operand 173187 states and 405197 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:04:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:01,535 INFO L93 Difference]: Finished difference Result 192994 states and 450546 transitions. [2022-02-11 00:04:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-11 00:04:01,536 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 42 [2022-02-11 00:04:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:02,040 INFO L225 Difference]: With dead ends: 192994 [2022-02-11 00:04:02,041 INFO L226 Difference]: Without dead ends: 192985 [2022-02-11 00:04:02,041 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1030, Invalid=2162, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 00:04:02,041 INFO L934 BasicCegarLoop]: 81 mSDtfsCounter, 261 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:02,041 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 585 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:04:02,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192985 states. [2022-02-11 00:04:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192985 to 163100. [2022-02-11 00:04:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163100 states, 163099 states have (on average 2.335072563289781) internal successors, (380848), 163099 states have internal predecessors, (380848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163100 states to 163100 states and 380848 transitions. [2022-02-11 00:04:06,386 INFO L78 Accepts]: Start accepts. Automaton has 163100 states and 380848 transitions. Word has length 42 [2022-02-11 00:04:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:06,386 INFO L470 AbstractCegarLoop]: Abstraction has 163100 states and 380848 transitions. [2022-02-11 00:04:06,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:04:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 163100 states and 380848 transitions. [2022-02-11 00:04:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:04:06,507 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:06,507 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:06,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:06,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:06,709 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:06,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:06,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1658764699, now seen corresponding path program 105 times [2022-02-11 00:04:06,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:06,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465163165] [2022-02-11 00:04:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:06,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:04:06,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:06,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465163165] [2022-02-11 00:04:06,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465163165] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:06,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608277327] [2022-02-11 00:04:06,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:04:06,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:06,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:06,746 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:04:06,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-11 00:04:06,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-11 00:04:06,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:06,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:04:06,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:06,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:04:06,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608277327] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:06,953 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:06,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 17 [2022-02-11 00:04:06,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509893935] [2022-02-11 00:04:06,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:06,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-11 00:04:06,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:06,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-11 00:04:06,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:04:06,954 INFO L87 Difference]: Start difference. First operand 163100 states and 380848 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) 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) [2022-02-11 00:04:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:08,575 INFO L93 Difference]: Finished difference Result 190612 states and 444336 transitions. [2022-02-11 00:04:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-11 00:04:08,575 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) 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 42 [2022-02-11 00:04:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:09,199 INFO L225 Difference]: With dead ends: 190612 [2022-02-11 00:04:09,199 INFO L226 Difference]: Without dead ends: 190579 [2022-02-11 00:04:09,199 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=877, Invalid=1985, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 00:04:09,199 INFO L934 BasicCegarLoop]: 72 mSDtfsCounter, 256 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:09,200 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 489 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:04:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190579 states. [2022-02-11 00:04:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190579 to 160372. [2022-02-11 00:04:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160372 states, 160371 states have (on average 2.3338882965124617) internal successors, (374288), 160371 states have internal predecessors, (374288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160372 states to 160372 states and 374288 transitions. [2022-02-11 00:04:13,472 INFO L78 Accepts]: Start accepts. Automaton has 160372 states and 374288 transitions. Word has length 42 [2022-02-11 00:04:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:13,472 INFO L470 AbstractCegarLoop]: Abstraction has 160372 states and 374288 transitions. [2022-02-11 00:04:13,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) 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) [2022-02-11 00:04:13,472 INFO L276 IsEmpty]: Start isEmpty. Operand 160372 states and 374288 transitions. [2022-02-11 00:04:13,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:04:13,624 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:13,624 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:13,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:13,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-02-11 00:04:13,825 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:13,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2108450367, now seen corresponding path program 106 times [2022-02-11 00:04:13,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:13,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862426703] [2022-02-11 00:04:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:13,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:13,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:13,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862426703] [2022-02-11 00:04:13,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862426703] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:13,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424381260] [2022-02-11 00:04:13,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:04:13,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:13,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:13,870 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:04:13,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-11 00:04:13,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:04:13,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:13,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:04:13,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:14,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:14,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424381260] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:14,087 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:14,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-02-11 00:04:14,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357871541] [2022-02-11 00:04:14,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:14,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-11 00:04:14,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:14,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-11 00:04:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:04:14,088 INFO L87 Difference]: Start difference. First operand 160372 states and 374288 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) 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) [2022-02-11 00:04:15,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:15,360 INFO L93 Difference]: Finished difference Result 187576 states and 436744 transitions. [2022-02-11 00:04:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 00:04:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) 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 42 [2022-02-11 00:04:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:15,858 INFO L225 Difference]: With dead ends: 187576 [2022-02-11 00:04:15,859 INFO L226 Difference]: Without dead ends: 187534 [2022-02-11 00:04:15,859 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=746, Invalid=1804, Unknown=0, NotChecked=0, Total=2550 [2022-02-11 00:04:15,859 INFO L934 BasicCegarLoop]: 62 mSDtfsCounter, 222 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:15,859 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 369 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:04:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187534 states. [2022-02-11 00:04:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187534 to 160214. [2022-02-11 00:04:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160214 states, 160213 states have (on average 2.337001366930274) internal successors, (374418), 160213 states have internal predecessors, (374418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:19,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160214 states to 160214 states and 374418 transitions. [2022-02-11 00:04:19,720 INFO L78 Accepts]: Start accepts. Automaton has 160214 states and 374418 transitions. Word has length 42 [2022-02-11 00:04:19,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:19,720 INFO L470 AbstractCegarLoop]: Abstraction has 160214 states and 374418 transitions. [2022-02-11 00:04:19,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) 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) [2022-02-11 00:04:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand 160214 states and 374418 transitions. [2022-02-11 00:04:20,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:04:20,219 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:20,219 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:20,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:20,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-02-11 00:04:20,420 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1020989805, now seen corresponding path program 107 times [2022-02-11 00:04:20,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:20,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243495583] [2022-02-11 00:04:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:20,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:20,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:20,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243495583] [2022-02-11 00:04:20,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243495583] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:20,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599659633] [2022-02-11 00:04:20,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:04:20,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:20,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:20,462 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:04:20,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-11 00:04:20,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:04:20,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:20,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:04:20,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:20,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:20,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599659633] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:20,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:20,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-11 00:04:20,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26349107] [2022-02-11 00:04:20,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:20,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:04:20,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:04:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:04:20,698 INFO L87 Difference]: Start difference. First operand 160214 states and 374418 transitions. Second operand has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:22,027 INFO L93 Difference]: Finished difference Result 171936 states and 400718 transitions. [2022-02-11 00:04:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-11 00:04:22,027 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:04:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:22,485 INFO L225 Difference]: With dead ends: 171936 [2022-02-11 00:04:22,485 INFO L226 Difference]: Without dead ends: 171936 [2022-02-11 00:04:22,485 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=708, Invalid=1842, Unknown=0, NotChecked=0, Total=2550 [2022-02-11 00:04:22,485 INFO L934 BasicCegarLoop]: 61 mSDtfsCounter, 172 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:22,485 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 581 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:04:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171936 states. [2022-02-11 00:04:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171936 to 162777. [2022-02-11 00:04:25,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162777 states, 162776 states have (on average 2.3344350518503956) internal successors, (379990), 162776 states have internal predecessors, (379990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162777 states to 162777 states and 379990 transitions. [2022-02-11 00:04:26,217 INFO L78 Accepts]: Start accepts. Automaton has 162777 states and 379990 transitions. Word has length 42 [2022-02-11 00:04:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:26,218 INFO L470 AbstractCegarLoop]: Abstraction has 162777 states and 379990 transitions. [2022-02-11 00:04:26,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 162777 states and 379990 transitions. [2022-02-11 00:04:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:04:26,362 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:26,362 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:26,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-02-11 00:04:26,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:26,562 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:26,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:26,563 INFO L85 PathProgramCache]: Analyzing trace with hash -119459987, now seen corresponding path program 108 times [2022-02-11 00:04:26,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:26,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746336175] [2022-02-11 00:04:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:26,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:26,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:26,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746336175] [2022-02-11 00:04:26,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746336175] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:26,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764120181] [2022-02-11 00:04:26,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:04:26,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:26,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:26,602 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:04:26,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-11 00:04:26,622 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 00:04:26,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:26,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:04:26,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:26,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:26,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764120181] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:26,829 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:26,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2022-02-11 00:04:26,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324122267] [2022-02-11 00:04:26,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:26,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-11 00:04:26,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:26,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-11 00:04:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:04:26,830 INFO L87 Difference]: Start difference. First operand 162777 states and 379990 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:28,670 INFO L93 Difference]: Finished difference Result 196893 states and 458853 transitions. [2022-02-11 00:04:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-11 00:04:28,671 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:04:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:29,208 INFO L225 Difference]: With dead ends: 196893 [2022-02-11 00:04:29,208 INFO L226 Difference]: Without dead ends: 196889 [2022-02-11 00:04:29,208 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=809, Invalid=2053, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 00:04:29,208 INFO L934 BasicCegarLoop]: 69 mSDtfsCounter, 262 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:29,208 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 606 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:04:29,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196889 states. [2022-02-11 00:04:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196889 to 170315. [2022-02-11 00:04:32,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170315 states, 170314 states have (on average 2.3338539403689658) internal successors, (397488), 170314 states have internal predecessors, (397488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170315 states to 170315 states and 397488 transitions. [2022-02-11 00:04:33,626 INFO L78 Accepts]: Start accepts. Automaton has 170315 states and 397488 transitions. Word has length 42 [2022-02-11 00:04:33,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:33,627 INFO L470 AbstractCegarLoop]: Abstraction has 170315 states and 397488 transitions. [2022-02-11 00:04:33,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 170315 states and 397488 transitions. [2022-02-11 00:04:33,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:04:33,759 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:33,759 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:33,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:33,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable120 [2022-02-11 00:04:33,962 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:33,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:33,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1129696621, now seen corresponding path program 109 times [2022-02-11 00:04:33,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:33,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106405852] [2022-02-11 00:04:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:33,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:33,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:33,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106405852] [2022-02-11 00:04:33,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106405852] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:33,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527723194] [2022-02-11 00:04:33,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:04:33,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:33,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:33,997 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:04:33,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-11 00:04:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:34,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:04:34,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:34,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:34,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527723194] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:34,218 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:34,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 17 [2022-02-11 00:04:34,218 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98402558] [2022-02-11 00:04:34,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:34,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-11 00:04:34,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-11 00:04:34,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:04:34,219 INFO L87 Difference]: Start difference. First operand 170315 states and 397488 transitions. Second operand has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 17 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:35,859 INFO L93 Difference]: Finished difference Result 223422 states and 521104 transitions. [2022-02-11 00:04:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-11 00:04:35,859 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 17 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:04:35,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:36,718 INFO L225 Difference]: With dead ends: 223422 [2022-02-11 00:04:36,719 INFO L226 Difference]: Without dead ends: 223422 [2022-02-11 00:04:36,719 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1227, Invalid=2679, Unknown=0, NotChecked=0, Total=3906 [2022-02-11 00:04:36,719 INFO L934 BasicCegarLoop]: 64 mSDtfsCounter, 261 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:36,719 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 556 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:04:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223422 states. [2022-02-11 00:04:40,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223422 to 184904. [2022-02-11 00:04:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184904 states, 184903 states have (on average 2.332352638951234) internal successors, (431259), 184903 states have internal predecessors, (431259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184904 states to 184904 states and 431259 transitions. [2022-02-11 00:04:41,495 INFO L78 Accepts]: Start accepts. Automaton has 184904 states and 431259 transitions. Word has length 42 [2022-02-11 00:04:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:41,495 INFO L470 AbstractCegarLoop]: Abstraction has 184904 states and 431259 transitions. [2022-02-11 00:04:41,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 17 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 184904 states and 431259 transitions. [2022-02-11 00:04:41,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:04:41,651 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:41,651 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:41,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:41,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:41,851 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash 823716717, now seen corresponding path program 110 times [2022-02-11 00:04:41,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:41,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543727935] [2022-02-11 00:04:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:41,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:41,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543727935] [2022-02-11 00:04:41,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543727935] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:41,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471699882] [2022-02-11 00:04:41,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:04:41,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:41,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:41,890 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:04:41,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-11 00:04:41,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:04:41,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:41,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:04:41,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:42,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:42,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471699882] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:42,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:42,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2022-02-11 00:04:42,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655639213] [2022-02-11 00:04:42,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:42,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:04:42,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:42,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:04:42,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:04:42,105 INFO L87 Difference]: Start difference. First operand 184904 states and 431259 transitions. Second operand has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:44,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:44,529 INFO L93 Difference]: Finished difference Result 269590 states and 627794 transitions. [2022-02-11 00:04:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-11 00:04:44,530 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:04:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:45,348 INFO L225 Difference]: With dead ends: 269590 [2022-02-11 00:04:45,348 INFO L226 Difference]: Without dead ends: 269590 [2022-02-11 00:04:45,348 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1414, Invalid=2876, Unknown=0, NotChecked=0, Total=4290 [2022-02-11 00:04:45,349 INFO L934 BasicCegarLoop]: 54 mSDtfsCounter, 296 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:45,349 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 397 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:04:45,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269590 states. [2022-02-11 00:04:50,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269590 to 236209. [2022-02-11 00:04:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236209 states, 236208 states have (on average 2.330149698570751) internal successors, (550400), 236208 states have internal predecessors, (550400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236209 states to 236209 states and 550400 transitions. [2022-02-11 00:04:52,020 INFO L78 Accepts]: Start accepts. Automaton has 236209 states and 550400 transitions. Word has length 42 [2022-02-11 00:04:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:52,020 INFO L470 AbstractCegarLoop]: Abstraction has 236209 states and 550400 transitions. [2022-02-11 00:04:52,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:52,020 INFO L276 IsEmpty]: Start isEmpty. Operand 236209 states and 550400 transitions. [2022-02-11 00:04:52,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:04:52,598 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:52,598 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:52,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:52,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-11 00:04:52,798 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:52,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:52,799 INFO L85 PathProgramCache]: Analyzing trace with hash 845557189, now seen corresponding path program 111 times [2022-02-11 00:04:52,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:52,799 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523099131] [2022-02-11 00:04:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:52,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:04:52,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:52,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523099131] [2022-02-11 00:04:52,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523099131] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:52,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687408384] [2022-02-11 00:04:52,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:04:52,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:52,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:52,830 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:04:52,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-11 00:04:52,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-11 00:04:52,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:52,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:04:52,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:52,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:04:53,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687408384] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:53,036 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:53,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2022-02-11 00:04:53,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93227653] [2022-02-11 00:04:53,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:53,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:04:53,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:04:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:04:53,036 INFO L87 Difference]: Start difference. First operand 236209 states and 550400 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:04:54,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:54,727 INFO L93 Difference]: Finished difference Result 268407 states and 624889 transitions. [2022-02-11 00:04:54,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-11 00:04:54,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:04:54,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:55,736 INFO L225 Difference]: With dead ends: 268407 [2022-02-11 00:04:55,736 INFO L226 Difference]: Without dead ends: 268401 [2022-02-11 00:04:55,736 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1091, Invalid=2449, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 00:04:55,736 INFO L934 BasicCegarLoop]: 73 mSDtfsCounter, 258 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:55,736 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 501 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:04:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268401 states. [2022-02-11 00:05:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268401 to 230212. [2022-02-11 00:05:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230212 states, 230211 states have (on average 2.326813227864872) internal successors, (535658), 230211 states have internal predecessors, (535658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230212 states to 230212 states and 535658 transitions. [2022-02-11 00:05:01,965 INFO L78 Accepts]: Start accepts. Automaton has 230212 states and 535658 transitions. Word has length 42 [2022-02-11 00:05:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:01,965 INFO L470 AbstractCegarLoop]: Abstraction has 230212 states and 535658 transitions. [2022-02-11 00:05:01,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 230212 states and 535658 transitions. [2022-02-11 00:05:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:05:02,145 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:02,145 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:02,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-02-11 00:05:02,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-02-11 00:05:02,346 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:02,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:02,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1424025043, now seen corresponding path program 112 times [2022-02-11 00:05:02,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:02,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74445412] [2022-02-11 00:05:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:02,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:05:02,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:02,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74445412] [2022-02-11 00:05:02,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74445412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:02,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354872052] [2022-02-11 00:05:02,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:05:02,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:02,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:02,395 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:05:02,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-11 00:05:02,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:05:02,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:02,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:05:02,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:02,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:05:02,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354872052] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:02,976 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:02,976 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 17 [2022-02-11 00:05:02,976 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914507883] [2022-02-11 00:05:02,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:02,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-11 00:05:02,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:02,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-11 00:05:02,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:05:02,977 INFO L87 Difference]: Start difference. First operand 230212 states and 535658 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:04,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:04,681 INFO L93 Difference]: Finished difference Result 270729 states and 629749 transitions. [2022-02-11 00:05:04,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-11 00:05:04,682 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:05:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:05,770 INFO L225 Difference]: With dead ends: 270729 [2022-02-11 00:05:05,770 INFO L226 Difference]: Without dead ends: 270708 [2022-02-11 00:05:05,771 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=940, Invalid=2252, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 00:05:05,771 INFO L934 BasicCegarLoop]: 64 mSDtfsCounter, 253 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:05:05,771 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 442 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:05:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270708 states. [2022-02-11 00:05:11,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270708 to 238632. [2022-02-11 00:05:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238632 states, 238631 states have (on average 2.326893823518319) internal successors, (555269), 238631 states have internal predecessors, (555269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238632 states to 238632 states and 555269 transitions. [2022-02-11 00:05:12,617 INFO L78 Accepts]: Start accepts. Automaton has 238632 states and 555269 transitions. Word has length 42 [2022-02-11 00:05:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:12,617 INFO L470 AbstractCegarLoop]: Abstraction has 238632 states and 555269 transitions. [2022-02-11 00:05:12,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 238632 states and 555269 transitions. [2022-02-11 00:05:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:05:13,263 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:13,263 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:13,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-02-11 00:05:13,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-02-11 00:05:13,472 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1873710711, now seen corresponding path program 113 times [2022-02-11 00:05:13,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:13,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715428770] [2022-02-11 00:05:13,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:13,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:05:13,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:13,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715428770] [2022-02-11 00:05:13,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715428770] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:13,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274043236] [2022-02-11 00:05:13,519 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:05:13,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:13,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:13,520 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:05:13,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-11 00:05:13,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 00:05:13,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:13,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:05:13,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:13,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:05:13,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274043236] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:13,736 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:13,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2022-02-11 00:05:13,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736399510] [2022-02-11 00:05:13,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:13,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-11 00:05:13,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:13,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-11 00:05:13,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:05:13,737 INFO L87 Difference]: Start difference. First operand 238632 states and 555269 transitions. Second operand has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:15,524 INFO L93 Difference]: Finished difference Result 285485 states and 663832 transitions. [2022-02-11 00:05:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-11 00:05:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:05:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:16,756 INFO L225 Difference]: With dead ends: 285485 [2022-02-11 00:05:16,756 INFO L226 Difference]: Without dead ends: 285455 [2022-02-11 00:05:16,756 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=806, Invalid=2056, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 00:05:16,757 INFO L934 BasicCegarLoop]: 55 mSDtfsCounter, 299 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:05:16,757 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 355 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:05:17,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285455 states. [2022-02-11 00:05:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285455 to 251515. [2022-02-11 00:05:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251515 states, 251514 states have (on average 2.3268605326144867) internal successors, (585238), 251514 states have internal predecessors, (585238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:24,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251515 states to 251515 states and 585238 transitions. [2022-02-11 00:05:24,761 INFO L78 Accepts]: Start accepts. Automaton has 251515 states and 585238 transitions. Word has length 42 [2022-02-11 00:05:24,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:24,761 INFO L470 AbstractCegarLoop]: Abstraction has 251515 states and 585238 transitions. [2022-02-11 00:05:24,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 251515 states and 585238 transitions. [2022-02-11 00:05:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-11 00:05:24,965 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:24,965 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:24,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-02-11 00:05:25,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-02-11 00:05:25,166 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:25,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:25,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1838517421, now seen corresponding path program 114 times [2022-02-11 00:05:25,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:25,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014355975] [2022-02-11 00:05:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:25,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:25,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:25,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014355975] [2022-02-11 00:05:25,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014355975] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:25,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393689543] [2022-02-11 00:05:25,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:05:25,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:25,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:25,213 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:05:25,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-11 00:05:25,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-11 00:05:25,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:25,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:05:25,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:25,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:25,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393689543] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:25,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:25,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-11 00:05:25,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436912571] [2022-02-11 00:05:25,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:25,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:05:25,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:25,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:05:25,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:05:25,440 INFO L87 Difference]: Start difference. First operand 251515 states and 585238 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:27,645 INFO L93 Difference]: Finished difference Result 294243 states and 684086 transitions. [2022-02-11 00:05:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 00:05:27,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-11 00:05:27,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:28,576 INFO L225 Difference]: With dead ends: 294243 [2022-02-11 00:05:28,576 INFO L226 Difference]: Without dead ends: 294204 [2022-02-11 00:05:28,577 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=694, Invalid=1856, Unknown=0, NotChecked=0, Total=2550 [2022-02-11 00:05:28,577 INFO L934 BasicCegarLoop]: 48 mSDtfsCounter, 200 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:05:28,577 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 355 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:05:29,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294204 states. [2022-02-11 00:05:34,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294204 to 258646. [2022-02-11 00:05:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258646 states, 258645 states have (on average 2.3269500666937306) internal successors, (601854), 258645 states have internal predecessors, (601854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258646 states to 258646 states and 601854 transitions. [2022-02-11 00:05:36,336 INFO L78 Accepts]: Start accepts. Automaton has 258646 states and 601854 transitions. Word has length 42 [2022-02-11 00:05:36,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:36,336 INFO L470 AbstractCegarLoop]: Abstraction has 258646 states and 601854 transitions. [2022-02-11 00:05:36,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:36,336 INFO L276 IsEmpty]: Start isEmpty. Operand 258646 states and 601854 transitions. [2022-02-11 00:05:37,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:05:37,063 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:37,063 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:37,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-02-11 00:05:37,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-02-11 00:05:37,265 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:37,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:37,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1911801099, now seen corresponding path program 115 times [2022-02-11 00:05:37,265 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:37,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872708188] [2022-02-11 00:05:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:37,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:37,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:37,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872708188] [2022-02-11 00:05:37,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872708188] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:37,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294856487] [2022-02-11 00:05:37,312 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:05:37,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:37,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:37,313 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:05:37,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-11 00:05:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:37,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:05:37,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:37,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:37,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294856487] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:37,494 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:37,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-11 00:05:37,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204591650] [2022-02-11 00:05:37,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:37,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:05:37,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:05:37,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:05:37,495 INFO L87 Difference]: Start difference. First operand 258646 states and 601854 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:39,087 INFO L93 Difference]: Finished difference Result 266339 states and 619212 transitions. [2022-02-11 00:05:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-11 00:05:39,088 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-11 00:05:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:40,237 INFO L225 Difference]: With dead ends: 266339 [2022-02-11 00:05:40,237 INFO L226 Difference]: Without dead ends: 266327 [2022-02-11 00:05:40,238 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2022-02-11 00:05:40,238 INFO L934 BasicCegarLoop]: 66 mSDtfsCounter, 140 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:05:40,238 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 397 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:05:40,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266327 states. [2022-02-11 00:05:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266327 to 259228. [2022-02-11 00:05:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259228 states, 259227 states have (on average 2.3265632052216785) internal successors, (603108), 259227 states have internal predecessors, (603108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:47,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259228 states to 259228 states and 603108 transitions. [2022-02-11 00:05:47,551 INFO L78 Accepts]: Start accepts. Automaton has 259228 states and 603108 transitions. Word has length 45 [2022-02-11 00:05:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:47,551 INFO L470 AbstractCegarLoop]: Abstraction has 259228 states and 603108 transitions. [2022-02-11 00:05:47,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 259228 states and 603108 transitions. [2022-02-11 00:05:47,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:05:47,774 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:47,774 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:47,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-02-11 00:05:47,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-02-11 00:05:47,987 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:47,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:47,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1289629217, now seen corresponding path program 116 times [2022-02-11 00:05:47,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:47,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683542509] [2022-02-11 00:05:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:47,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:48,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:48,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683542509] [2022-02-11 00:05:48,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683542509] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:48,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261054988] [2022-02-11 00:05:48,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:05:48,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:48,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:48,033 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:05:48,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-11 00:05:48,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:05:48,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:48,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:05:48,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:48,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:48,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261054988] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:48,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:48,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:05:48,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107213349] [2022-02-11 00:05:48,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:48,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:05:48,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:05:48,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:05:48,221 INFO L87 Difference]: Start difference. First operand 259228 states and 603108 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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) [2022-02-11 00:05:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:50,365 INFO L93 Difference]: Finished difference Result 266042 states and 618714 transitions. [2022-02-11 00:05:50,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 00:05:50,366 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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 45 [2022-02-11 00:05:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:51,639 INFO L225 Difference]: With dead ends: 266042 [2022-02-11 00:05:51,639 INFO L226 Difference]: Without dead ends: 266038 [2022-02-11 00:05:51,639 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=876, Invalid=1674, Unknown=0, NotChecked=0, Total=2550 [2022-02-11 00:05:51,640 INFO L934 BasicCegarLoop]: 84 mSDtfsCounter, 249 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:05:51,640 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 527 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:05:51,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266038 states. [2022-02-11 00:05:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266038 to 263904. [2022-02-11 00:05:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263904 states, 263903 states have (on average 2.3279841456898938) internal successors, (614362), 263903 states have internal predecessors, (614362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263904 states to 263904 states and 614362 transitions. [2022-02-11 00:05:58,613 INFO L78 Accepts]: Start accepts. Automaton has 263904 states and 614362 transitions. Word has length 45 [2022-02-11 00:05:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:58,613 INFO L470 AbstractCegarLoop]: Abstraction has 263904 states and 614362 transitions. [2022-02-11 00:05:58,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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) [2022-02-11 00:05:58,614 INFO L276 IsEmpty]: Start isEmpty. Operand 263904 states and 614362 transitions. [2022-02-11 00:05:58,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:05:58,858 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:58,858 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:58,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-02-11 00:05:59,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-02-11 00:05:59,059 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash -418053275, now seen corresponding path program 117 times [2022-02-11 00:05:59,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:59,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341316185] [2022-02-11 00:05:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:59,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:59,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:59,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341316185] [2022-02-11 00:05:59,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341316185] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:59,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552016392] [2022-02-11 00:05:59,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:05:59,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:59,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:59,102 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:05:59,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-11 00:05:59,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-11 00:05:59,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:59,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:05:59,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:59,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:59,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552016392] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:59,286 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:59,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:05:59,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332252652] [2022-02-11 00:05:59,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:59,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:05:59,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:59,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:05:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:05:59,287 INFO L87 Difference]: Start difference. First operand 263904 states and 614362 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 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) [2022-02-11 00:06:01,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:01,440 INFO L93 Difference]: Finished difference Result 268041 states and 622726 transitions. [2022-02-11 00:06:01,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 00:06:01,441 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 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 45 [2022-02-11 00:06:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:02,296 INFO L225 Difference]: With dead ends: 268041 [2022-02-11 00:06:02,297 INFO L226 Difference]: Without dead ends: 268029 [2022-02-11 00:06:02,297 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1199, Invalid=2341, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 00:06:02,297 INFO L934 BasicCegarLoop]: 84 mSDtfsCounter, 259 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:02,297 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 642 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:06:02,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268029 states. [2022-02-11 00:06:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268029 to 255241. [2022-02-11 00:06:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255241 states, 255240 states have (on average 2.3277621062529383) internal successors, (594138), 255240 states have internal predecessors, (594138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255241 states to 255241 states and 594138 transitions. [2022-02-11 00:06:09,227 INFO L78 Accepts]: Start accepts. Automaton has 255241 states and 594138 transitions. Word has length 45 [2022-02-11 00:06:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:09,227 INFO L470 AbstractCegarLoop]: Abstraction has 255241 states and 594138 transitions. [2022-02-11 00:06:09,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 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) [2022-02-11 00:06:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 255241 states and 594138 transitions. [2022-02-11 00:06:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:06:09,826 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:09,826 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:09,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-02-11 00:06:10,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:10,041 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:10,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2073595317, now seen corresponding path program 118 times [2022-02-11 00:06:10,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:10,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582476241] [2022-02-11 00:06:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:10,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:10,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:10,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582476241] [2022-02-11 00:06:10,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582476241] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:10,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071810901] [2022-02-11 00:06:10,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:06:10,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:10,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:10,083 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:06:10,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-11 00:06:10,102 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:06:10,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:10,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:06:10,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:10,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:10,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071810901] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:10,270 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:10,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-02-11 00:06:10,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132763769] [2022-02-11 00:06:10,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:10,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-11 00:06:10,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:10,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-11 00:06:10,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:06:10,271 INFO L87 Difference]: Start difference. First operand 255241 states and 594138 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:12,034 INFO L93 Difference]: Finished difference Result 273104 states and 635819 transitions. [2022-02-11 00:06:12,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-11 00:06:12,034 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-11 00:06:12,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:13,165 INFO L225 Difference]: With dead ends: 273104 [2022-02-11 00:06:13,165 INFO L226 Difference]: Without dead ends: 273072 [2022-02-11 00:06:13,166 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=973, Invalid=2107, Unknown=0, NotChecked=0, Total=3080 [2022-02-11 00:06:13,166 INFO L934 BasicCegarLoop]: 70 mSDtfsCounter, 316 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:13,166 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 465 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:06:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273072 states. [2022-02-11 00:06:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273072 to 258281. [2022-02-11 00:06:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258281 states, 258280 states have (on average 2.3254026637757472) internal successors, (600605), 258280 states have internal predecessors, (600605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258281 states to 258281 states and 600605 transitions. [2022-02-11 00:06:20,108 INFO L78 Accepts]: Start accepts. Automaton has 258281 states and 600605 transitions. Word has length 45 [2022-02-11 00:06:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:20,108 INFO L470 AbstractCegarLoop]: Abstraction has 258281 states and 600605 transitions. [2022-02-11 00:06:20,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 258281 states and 600605 transitions. [2022-02-11 00:06:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:06:20,335 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:20,336 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:20,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-02-11 00:06:20,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:20,536 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:20,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:20,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1032382325, now seen corresponding path program 119 times [2022-02-11 00:06:20,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:20,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858855999] [2022-02-11 00:06:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:20,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:20,589 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:20,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858855999] [2022-02-11 00:06:20,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858855999] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:20,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229161525] [2022-02-11 00:06:20,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:06:20,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:20,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:20,590 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:06:20,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-11 00:06:20,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 00:06:20,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:20,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:06:20,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:20,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:20,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229161525] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:20,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:20,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-11 00:06:20,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645444670] [2022-02-11 00:06:20,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:20,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:06:20,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:06:20,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:06:20,783 INFO L87 Difference]: Start difference. First operand 258281 states and 600605 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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) [2022-02-11 00:06:22,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:22,852 INFO L93 Difference]: Finished difference Result 272893 states and 632276 transitions. [2022-02-11 00:06:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 00:06:22,852 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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 45 [2022-02-11 00:06:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:24,133 INFO L225 Difference]: With dead ends: 272893 [2022-02-11 00:06:24,133 INFO L226 Difference]: Without dead ends: 272881 [2022-02-11 00:06:24,134 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1190, Invalid=2350, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 00:06:24,134 INFO L934 BasicCegarLoop]: 78 mSDtfsCounter, 330 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:24,134 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 432 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:06:24,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272881 states. [2022-02-11 00:06:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272881 to 238499. [2022-02-11 00:06:29,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238499 states, 238498 states have (on average 2.3267113351055353) internal successors, (554916), 238498 states have internal predecessors, (554916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:30,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238499 states to 238499 states and 554916 transitions. [2022-02-11 00:06:30,621 INFO L78 Accepts]: Start accepts. Automaton has 238499 states and 554916 transitions. Word has length 45 [2022-02-11 00:06:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:30,621 INFO L470 AbstractCegarLoop]: Abstraction has 238499 states and 554916 transitions. [2022-02-11 00:06:30,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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) [2022-02-11 00:06:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 238499 states and 554916 transitions. [2022-02-11 00:06:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:06:31,262 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:31,263 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:31,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-02-11 00:06:31,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:31,463 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:31,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash 689837195, now seen corresponding path program 120 times [2022-02-11 00:06:31,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:31,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402551765] [2022-02-11 00:06:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:31,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:31,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:31,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402551765] [2022-02-11 00:06:31,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402551765] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:31,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027422028] [2022-02-11 00:06:31,506 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:06:31,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:31,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:31,507 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:06:31,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-11 00:06:31,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-11 00:06:31,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:31,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:06:31,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:31,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:31,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027422028] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:31,724 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:31,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-02-11 00:06:31,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961293955] [2022-02-11 00:06:31,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:31,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-11 00:06:31,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-11 00:06:31,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:06:31,725 INFO L87 Difference]: Start difference. First operand 238499 states and 554916 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) 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) [2022-02-11 00:06:33,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:33,435 INFO L93 Difference]: Finished difference Result 268440 states and 622769 transitions. [2022-02-11 00:06:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-11 00:06:33,435 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) 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 45 [2022-02-11 00:06:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:34,486 INFO L225 Difference]: With dead ends: 268440 [2022-02-11 00:06:34,486 INFO L226 Difference]: Without dead ends: 268358 [2022-02-11 00:06:34,486 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=996, Invalid=2426, Unknown=0, NotChecked=0, Total=3422 [2022-02-11 00:06:34,487 INFO L934 BasicCegarLoop]: 56 mSDtfsCounter, 373 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:34,487 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 440 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:06:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268358 states. [2022-02-11 00:06:39,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268358 to 241646. [2022-02-11 00:06:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241646 states, 241645 states have (on average 2.3204659728113555) internal successors, (560729), 241645 states have internal predecessors, (560729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241646 states to 241646 states and 560729 transitions. [2022-02-11 00:06:41,101 INFO L78 Accepts]: Start accepts. Automaton has 241646 states and 560729 transitions. Word has length 45 [2022-02-11 00:06:41,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:41,101 INFO L470 AbstractCegarLoop]: Abstraction has 241646 states and 560729 transitions. [2022-02-11 00:06:41,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) 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) [2022-02-11 00:06:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 241646 states and 560729 transitions. [2022-02-11 00:06:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:06:41,750 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:41,750 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:41,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-02-11 00:06:41,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:41,965 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:41,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash -789760693, now seen corresponding path program 121 times [2022-02-11 00:06:41,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:41,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5095231] [2022-02-11 00:06:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:41,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:41,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:41,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5095231] [2022-02-11 00:06:41,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5095231] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:41,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830636993] [2022-02-11 00:06:41,998 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:06:41,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:41,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:41,999 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:06:42,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-11 00:06:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:42,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:06:42,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:42,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:42,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830636993] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:42,195 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:42,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-11 00:06:42,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141559714] [2022-02-11 00:06:42,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:42,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:06:42,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:06:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:06:42,196 INFO L87 Difference]: Start difference. First operand 241646 states and 560729 transitions. Second operand has 16 states, 16 states have (on average 4.0) 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) [2022-02-11 00:06:44,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:44,159 INFO L93 Difference]: Finished difference Result 274761 states and 634080 transitions. [2022-02-11 00:06:44,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-11 00:06:44,160 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) 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 45 [2022-02-11 00:06:44,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:45,268 INFO L225 Difference]: With dead ends: 274761 [2022-02-11 00:06:45,268 INFO L226 Difference]: Without dead ends: 274746 [2022-02-11 00:06:45,268 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1526, Invalid=3030, Unknown=0, NotChecked=0, Total=4556 [2022-02-11 00:06:45,269 INFO L934 BasicCegarLoop]: 65 mSDtfsCounter, 329 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:45,269 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 479 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:06:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274746 states. [2022-02-11 00:06:50,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274746 to 245994. [2022-02-11 00:06:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245994 states, 245993 states have (on average 2.323440097888964) internal successors, (571550), 245993 states have internal predecessors, (571550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245994 states to 245994 states and 571550 transitions. [2022-02-11 00:06:52,361 INFO L78 Accepts]: Start accepts. Automaton has 245994 states and 571550 transitions. Word has length 45 [2022-02-11 00:06:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:52,361 INFO L470 AbstractCegarLoop]: Abstraction has 245994 states and 571550 transitions. [2022-02-11 00:06:52,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) 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) [2022-02-11 00:06:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 245994 states and 571550 transitions. [2022-02-11 00:06:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:06:52,605 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:52,605 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:52,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-02-11 00:06:52,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-02-11 00:06:52,806 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:52,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:52,807 INFO L85 PathProgramCache]: Analyzing trace with hash -664664373, now seen corresponding path program 122 times [2022-02-11 00:06:52,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:52,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833745693] [2022-02-11 00:06:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:52,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:52,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833745693] [2022-02-11 00:06:52,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833745693] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:52,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126313002] [2022-02-11 00:06:52,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:06:52,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:52,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:52,852 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:06:52,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-11 00:06:52,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:06:52,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:52,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:06:52,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:53,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:53,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126313002] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:53,093 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:53,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-11 00:06:53,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953261173] [2022-02-11 00:06:53,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:53,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:06:53,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:06:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:06:53,094 INFO L87 Difference]: Start difference. First operand 245994 states and 571550 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:06:55,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:55,514 INFO L93 Difference]: Finished difference Result 278953 states and 644927 transitions. [2022-02-11 00:06:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-11 00:06:55,515 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-11 00:06:55,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:56,708 INFO L225 Difference]: With dead ends: 278953 [2022-02-11 00:06:56,708 INFO L226 Difference]: Without dead ends: 278835 [2022-02-11 00:06:56,708 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1034, Invalid=2748, Unknown=0, NotChecked=0, Total=3782 [2022-02-11 00:06:56,709 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 368 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:56,709 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 385 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:06:57,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278835 states. [2022-02-11 00:07:02,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278835 to 257417. [2022-02-11 00:07:03,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257417 states, 257416 states have (on average 2.3185039003014576) internal successors, (596820), 257416 states have internal predecessors, (596820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:07:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257417 states to 257417 states and 596820 transitions. [2022-02-11 00:07:04,508 INFO L78 Accepts]: Start accepts. Automaton has 257417 states and 596820 transitions. Word has length 45 [2022-02-11 00:07:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:04,508 INFO L470 AbstractCegarLoop]: Abstraction has 257417 states and 596820 transitions. [2022-02-11 00:07:04,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:07:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 257417 states and 596820 transitions. [2022-02-11 00:07:04,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:07:04,751 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:04,751 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:04,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:04,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-02-11 00:07:04,952 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:04,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:04,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1979006453, now seen corresponding path program 123 times [2022-02-11 00:07:04,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:04,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065652823] [2022-02-11 00:07:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:04,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:04,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:04,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065652823] [2022-02-11 00:07:04,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065652823] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:04,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379460053] [2022-02-11 00:07:04,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:07:04,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:04,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:04,992 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:07:04,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-11 00:07:05,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-11 00:07:05,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:05,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:07:05,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:05,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:05,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379460053] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:05,218 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:05,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2022-02-11 00:07:05,218 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187612085] [2022-02-11 00:07:05,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:05,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:07:05,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:05,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:07:05,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:07:05,219 INFO L87 Difference]: Start difference. First operand 257417 states and 596820 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:07:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:07,639 INFO L93 Difference]: Finished difference Result 311948 states and 718267 transitions. [2022-02-11 00:07:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-11 00:07:07,639 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-11 00:07:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:08,641 INFO L225 Difference]: With dead ends: 311948 [2022-02-11 00:07:08,641 INFO L226 Difference]: Without dead ends: 311936 [2022-02-11 00:07:08,641 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1414, Invalid=2876, Unknown=0, NotChecked=0, Total=4290 [2022-02-11 00:07:08,641 INFO L934 BasicCegarLoop]: 56 mSDtfsCounter, 352 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:07:08,642 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 409 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:07:09,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311936 states. [2022-02-11 00:07:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311936 to 287339. [2022-02-11 00:07:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287339 states, 287338 states have (on average 2.3100181667583124) internal successors, (663756), 287338 states have internal predecessors, (663756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:07:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287339 states to 287339 states and 663756 transitions. [2022-02-11 00:07:17,090 INFO L78 Accepts]: Start accepts. Automaton has 287339 states and 663756 transitions. Word has length 45 [2022-02-11 00:07:17,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:17,090 INFO L470 AbstractCegarLoop]: Abstraction has 287339 states and 663756 transitions. [2022-02-11 00:07:17,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:07:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 287339 states and 663756 transitions. [2022-02-11 00:07:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:07:17,351 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:17,351 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:17,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:17,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-02-11 00:07:17,552 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1655878035, now seen corresponding path program 124 times [2022-02-11 00:07:17,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:17,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68670270] [2022-02-11 00:07:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:17,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:17,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:17,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68670270] [2022-02-11 00:07:17,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68670270] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:17,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989914309] [2022-02-11 00:07:17,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:07:17,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:17,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:17,595 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:07:17,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-02-11 00:07:17,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:07:17,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:17,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:07:17,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:17,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:17,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989914309] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:17,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:17,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-11 00:07:17,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834716780] [2022-02-11 00:07:17,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:17,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:07:17,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:17,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:07:17,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:07:17,798 INFO L87 Difference]: Start difference. First operand 287339 states and 663756 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 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) [2022-02-11 00:07:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:19,820 INFO L93 Difference]: Finished difference Result 325159 states and 746408 transitions. [2022-02-11 00:07:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-11 00:07:19,821 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 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 45 [2022-02-11 00:07:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:21,193 INFO L225 Difference]: With dead ends: 325159 [2022-02-11 00:07:21,194 INFO L226 Difference]: Without dead ends: 325119 [2022-02-11 00:07:21,194 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-02-11 00:07:21,194 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 145 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:07:21,194 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 266 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:07:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325119 states. [2022-02-11 00:07:27,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325119 to 287339. [2022-02-11 00:07:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287339 states, 287338 states have (on average 2.3100146865364137) internal successors, (663755), 287338 states have internal predecessors, (663755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:07:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287339 states to 287339 states and 663755 transitions. [2022-02-11 00:07:29,633 INFO L78 Accepts]: Start accepts. Automaton has 287339 states and 663755 transitions. Word has length 45 [2022-02-11 00:07:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:29,633 INFO L470 AbstractCegarLoop]: Abstraction has 287339 states and 663755 transitions. [2022-02-11 00:07:29,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 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) [2022-02-11 00:07:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 287339 states and 663755 transitions. [2022-02-11 00:07:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:07:29,914 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:29,914 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:29,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:30,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-02-11 00:07:30,130 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:30,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:30,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1574062487, now seen corresponding path program 125 times [2022-02-11 00:07:30,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:30,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930302382] [2022-02-11 00:07:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:30,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:30,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:30,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930302382] [2022-02-11 00:07:30,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930302382] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:30,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252034935] [2022-02-11 00:07:30,181 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:07:30,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:30,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:30,182 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:07:30,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-02-11 00:07:30,205 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:07:30,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:30,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:07:30,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:30,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:30,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252034935] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:30,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:30,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:07:30,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950450659] [2022-02-11 00:07:30,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:30,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:07:30,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:30,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:07:30,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:07:30,446 INFO L87 Difference]: Start difference. First operand 287339 states and 663755 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:07:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:33,279 INFO L93 Difference]: Finished difference Result 325403 states and 746800 transitions. [2022-02-11 00:07:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 00:07:33,280 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 45 [2022-02-11 00:07:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:34,863 INFO L225 Difference]: With dead ends: 325403 [2022-02-11 00:07:34,863 INFO L226 Difference]: Without dead ends: 325365 [2022-02-11 00:07:34,863 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=373, Invalid=1109, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 00:07:34,863 INFO L934 BasicCegarLoop]: 48 mSDtfsCounter, 380 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:07:34,864 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 246 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:07:35,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325365 states. [2022-02-11 00:07:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325365 to 295454. [2022-02-11 00:07:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295454 states, 295453 states have (on average 2.3139517960555485) internal successors, (683664), 295453 states have internal predecessors, (683664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:07:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295454 states to 295454 states and 683664 transitions. [2022-02-11 00:07:43,164 INFO L78 Accepts]: Start accepts. Automaton has 295454 states and 683664 transitions. Word has length 45 [2022-02-11 00:07:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:43,164 INFO L470 AbstractCegarLoop]: Abstraction has 295454 states and 683664 transitions. [2022-02-11 00:07:43,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:07:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 295454 states and 683664 transitions. [2022-02-11 00:07:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:07:43,418 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:43,418 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:43,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-02-11 00:07:43,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-02-11 00:07:43,619 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1255694871, now seen corresponding path program 126 times [2022-02-11 00:07:43,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:43,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714295500] [2022-02-11 00:07:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:43,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:43,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714295500] [2022-02-11 00:07:43,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714295500] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:43,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939748659] [2022-02-11 00:07:43,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:07:43,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:43,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:43,666 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:07:43,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-02-11 00:07:43,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:07:44,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:44,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:07:44,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:44,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:44,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939748659] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:44,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:44,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:07:44,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581876941] [2022-02-11 00:07:44,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:44,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:07:44,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:44,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:07:44,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:07:44,249 INFO L87 Difference]: Start difference. First operand 295454 states and 683664 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:07:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:46,853 INFO L93 Difference]: Finished difference Result 402154 states and 927085 transitions. [2022-02-11 00:07:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 00:07:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 45 [2022-02-11 00:07:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:48,188 INFO L225 Difference]: With dead ends: 402154 [2022-02-11 00:07:48,188 INFO L226 Difference]: Without dead ends: 402102 [2022-02-11 00:07:48,188 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=497, Invalid=1573, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:07:48,189 INFO L934 BasicCegarLoop]: 50 mSDtfsCounter, 338 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:07:48,189 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 353 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:07:48,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402102 states. [2022-02-11 00:07:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402102 to 342807. [2022-02-11 00:07:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342807 states, 342806 states have (on average 2.313734298699556) internal successors, (793162), 342806 states have internal predecessors, (793162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:08:00,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342807 states to 342807 states and 793162 transitions. [2022-02-11 00:08:00,081 INFO L78 Accepts]: Start accepts. Automaton has 342807 states and 793162 transitions. Word has length 45 [2022-02-11 00:08:00,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:00,081 INFO L470 AbstractCegarLoop]: Abstraction has 342807 states and 793162 transitions. [2022-02-11 00:08:00,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:08:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 342807 states and 793162 transitions. [2022-02-11 00:08:00,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:08:00,362 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:00,362 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:00,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-02-11 00:08:00,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:00,566 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1703224681, now seen corresponding path program 127 times [2022-02-11 00:08:00,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:00,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185371223] [2022-02-11 00:08:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:00,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:00,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185371223] [2022-02-11 00:08:00,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185371223] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:00,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288709612] [2022-02-11 00:08:00,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:08:00,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:00,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:00,608 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:08:00,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-02-11 00:08:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:00,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:08:01,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:01,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:01,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288709612] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:01,191 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:01,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:08:01,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624889710] [2022-02-11 00:08:01,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:01,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:08:01,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:01,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:08:01,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:08:01,192 INFO L87 Difference]: Start difference. First operand 342807 states and 793162 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:08:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:03,837 INFO L93 Difference]: Finished difference Result 414502 states and 959829 transitions. [2022-02-11 00:08:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-11 00:08:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 45 [2022-02-11 00:08:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:05,440 INFO L225 Difference]: With dead ends: 414502 [2022-02-11 00:08:05,441 INFO L226 Difference]: Without dead ends: 414460 [2022-02-11 00:08:05,441 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:08:05,441 INFO L934 BasicCegarLoop]: 51 mSDtfsCounter, 343 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:08:05,441 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 355 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:08:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414460 states. [2022-02-11 00:08:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414460 to 363814. [2022-02-11 00:08:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363814 states, 363813 states have (on average 2.3125919084804556) internal successors, (841351), 363813 states have internal predecessors, (841351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:08:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363814 states to 363814 states and 841351 transitions. [2022-02-11 00:08:15,984 INFO L78 Accepts]: Start accepts. Automaton has 363814 states and 841351 transitions. Word has length 45 [2022-02-11 00:08:15,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:15,984 INFO L470 AbstractCegarLoop]: Abstraction has 363814 states and 841351 transitions. [2022-02-11 00:08:15,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:08:15,984 INFO L276 IsEmpty]: Start isEmpty. Operand 363814 states and 841351 transitions. [2022-02-11 00:08:16,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:08:16,638 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:16,638 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:16,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-02-11 00:08:16,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:16,839 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:16,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:16,839 INFO L85 PathProgramCache]: Analyzing trace with hash -293712663, now seen corresponding path program 128 times [2022-02-11 00:08:16,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:16,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249821948] [2022-02-11 00:08:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:16,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:16,878 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:16,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249821948] [2022-02-11 00:08:16,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249821948] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:16,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51112989] [2022-02-11 00:08:16,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:08:16,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:16,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:16,879 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:08:16,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-02-11 00:08:16,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:08:16,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:16,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:08:16,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:17,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:17,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51112989] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:17,081 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:17,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:08:17,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592688376] [2022-02-11 00:08:17,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:17,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:08:17,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:17,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:08:17,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:08:17,082 INFO L87 Difference]: Start difference. First operand 363814 states and 841351 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:08:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:20,042 INFO L93 Difference]: Finished difference Result 405998 states and 937198 transitions. [2022-02-11 00:08:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 00:08:20,042 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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 45 [2022-02-11 00:08:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:21,913 INFO L225 Difference]: With dead ends: 405998 [2022-02-11 00:08:21,913 INFO L226 Difference]: Without dead ends: 405992 [2022-02-11 00:08:21,914 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=571, Invalid=1685, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:08:21,914 INFO L934 BasicCegarLoop]: 56 mSDtfsCounter, 338 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:08:21,915 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 443 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:08:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405992 states. [2022-02-11 00:08:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405992 to 354989. [2022-02-11 00:08:30,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354989 states, 354988 states have (on average 2.309833008439722) internal successors, (819963), 354988 states have internal predecessors, (819963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:08:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354989 states to 354989 states and 819963 transitions. [2022-02-11 00:08:32,756 INFO L78 Accepts]: Start accepts. Automaton has 354989 states and 819963 transitions. Word has length 45 [2022-02-11 00:08:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:32,756 INFO L470 AbstractCegarLoop]: Abstraction has 354989 states and 819963 transitions. [2022-02-11 00:08:32,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 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) [2022-02-11 00:08:32,756 INFO L276 IsEmpty]: Start isEmpty. Operand 354989 states and 819963 transitions. [2022-02-11 00:08:33,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:08:33,029 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:33,029 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:33,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-02-11 00:08:33,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:33,243 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:33,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:33,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2001395155, now seen corresponding path program 129 times [2022-02-11 00:08:33,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:33,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669919251] [2022-02-11 00:08:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:33,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:33,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669919251] [2022-02-11 00:08:33,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669919251] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:33,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571361391] [2022-02-11 00:08:33,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:08:33,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:33,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:33,284 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:08:33,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-02-11 00:08:33,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 00:08:33,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:33,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:08:33,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:33,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:33,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571361391] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:33,484 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:33,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-11 00:08:33,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067187625] [2022-02-11 00:08:33,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:33,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:08:33,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:33,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:08:33,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:08:33,485 INFO L87 Difference]: Start difference. First operand 354989 states and 819963 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 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) [2022-02-11 00:08:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:36,186 INFO L93 Difference]: Finished difference Result 385076 states and 877695 transitions. [2022-02-11 00:08:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-11 00:08:36,187 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 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 45 [2022-02-11 00:08:36,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:37,694 INFO L225 Difference]: With dead ends: 385076 [2022-02-11 00:08:37,694 INFO L226 Difference]: Without dead ends: 385052 [2022-02-11 00:08:37,694 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1351, Invalid=3341, Unknown=0, NotChecked=0, Total=4692 [2022-02-11 00:08:37,694 INFO L934 BasicCegarLoop]: 55 mSDtfsCounter, 389 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:08:37,694 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 451 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:08:38,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385052 states. [2022-02-11 00:08:45,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385052 to 322184. [2022-02-11 00:08:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322184 states, 322183 states have (on average 2.288128175602065) internal successors, (737196), 322183 states have internal predecessors, (737196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:08:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322184 states to 322184 states and 737196 transitions. [2022-02-11 00:08:47,123 INFO L78 Accepts]: Start accepts. Automaton has 322184 states and 737196 transitions. Word has length 45 [2022-02-11 00:08:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:47,124 INFO L470 AbstractCegarLoop]: Abstraction has 322184 states and 737196 transitions. [2022-02-11 00:08:47,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 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) [2022-02-11 00:08:47,124 INFO L276 IsEmpty]: Start isEmpty. Operand 322184 states and 737196 transitions. [2022-02-11 00:08:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 00:08:47,438 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:47,438 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:47,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-02-11 00:08:47,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:47,638 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:47,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:47,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2015902519, now seen corresponding path program 130 times [2022-02-11 00:08:47,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:47,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015407338] [2022-02-11 00:08:47,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:47,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:47,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:47,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015407338] [2022-02-11 00:08:47,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015407338] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:47,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699377122] [2022-02-11 00:08:47,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:08:47,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:47,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:47,829 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:08:47,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-02-11 00:08:47,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:08:47,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:47,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-11 00:08:47,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:47,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:48,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699377122] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:48,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:48,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-11 00:08:48,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240529701] [2022-02-11 00:08:48,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:48,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:08:48,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:48,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:08:48,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:08:48,459 INFO L87 Difference]: Start difference. First operand 322184 states and 737196 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:08:50,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:50,658 INFO L93 Difference]: Finished difference Result 328852 states and 752622 transitions. [2022-02-11 00:08:50,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:08:50,658 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 00:08:50,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:52,434 INFO L225 Difference]: With dead ends: 328852 [2022-02-11 00:08:52,435 INFO L226 Difference]: Without dead ends: 328813 [2022-02-11 00:08:52,435 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:08:52,435 INFO L934 BasicCegarLoop]: 111 mSDtfsCounter, 112 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:08:52,435 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1860 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:08:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328813 states. [2022-02-11 00:08:59,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328813 to 323898. [2022-02-11 00:09:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323898 states, 323897 states have (on average 2.28820581851638) internal successors, (741143), 323897 states have internal predecessors, (741143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323898 states to 323898 states and 741143 transitions. [2022-02-11 00:09:01,574 INFO L78 Accepts]: Start accepts. Automaton has 323898 states and 741143 transitions. Word has length 48 [2022-02-11 00:09:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:01,575 INFO L470 AbstractCegarLoop]: Abstraction has 323898 states and 741143 transitions. [2022-02-11 00:09:01,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 323898 states and 741143 transitions. [2022-02-11 00:09:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 00:09:01,869 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:01,869 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:01,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-02-11 00:09:02,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:02,069 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:02,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1972479757, now seen corresponding path program 131 times [2022-02-11 00:09:02,070 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:02,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079395477] [2022-02-11 00:09:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:02,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:02,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:02,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079395477] [2022-02-11 00:09:02,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079395477] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:02,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537119646] [2022-02-11 00:09:02,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:09:02,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:02,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:02,252 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:09:02,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-02-11 00:09:02,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 00:09:02,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:02,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-11 00:09:02,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:02,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:02,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537119646] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:02,907 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:02,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-11 00:09:02,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997590980] [2022-02-11 00:09:02,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:02,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:09:02,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:02,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:09:02,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:09:02,908 INFO L87 Difference]: Start difference. First operand 323898 states and 741143 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:04,811 INFO L93 Difference]: Finished difference Result 334490 states and 765815 transitions. [2022-02-11 00:09:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:09:04,811 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 00:09:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:06,248 INFO L225 Difference]: With dead ends: 334490 [2022-02-11 00:09:06,248 INFO L226 Difference]: Without dead ends: 334447 [2022-02-11 00:09:06,248 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:09:06,248 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 103 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:09:06,248 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1811 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:09:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334447 states. [2022-02-11 00:09:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334447 to 326376. [2022-02-11 00:09:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326376 states, 326375 states have (on average 2.2891152815013407) internal successors, (747110), 326375 states have internal predecessors, (747110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326376 states to 326376 states and 747110 transitions. [2022-02-11 00:09:15,319 INFO L78 Accepts]: Start accepts. Automaton has 326376 states and 747110 transitions. Word has length 48 [2022-02-11 00:09:15,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:15,320 INFO L470 AbstractCegarLoop]: Abstraction has 326376 states and 747110 transitions. [2022-02-11 00:09:15,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:15,320 INFO L276 IsEmpty]: Start isEmpty. Operand 326376 states and 747110 transitions. [2022-02-11 00:09:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 00:09:16,021 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:16,021 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:16,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-02-11 00:09:16,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:16,228 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:16,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1331935395, now seen corresponding path program 132 times [2022-02-11 00:09:16,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:16,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181161620] [2022-02-11 00:09:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:16,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:16,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:16,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181161620] [2022-02-11 00:09:16,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181161620] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:16,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692331111] [2022-02-11 00:09:16,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:09:16,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:16,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:16,396 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:09:16,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-02-11 00:09:16,421 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-11 00:09:16,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:16,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-11 00:09:16,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:16,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:16,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692331111] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:16,674 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:16,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-11 00:09:16,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603879734] [2022-02-11 00:09:16,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:16,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:09:16,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:16,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:09:16,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:09:16,675 INFO L87 Difference]: Start difference. First operand 326376 states and 747110 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:18,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:18,960 INFO L93 Difference]: Finished difference Result 340846 states and 781024 transitions. [2022-02-11 00:09:18,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:09:18,961 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 00:09:18,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:20,098 INFO L225 Difference]: With dead ends: 340846 [2022-02-11 00:09:20,098 INFO L226 Difference]: Without dead ends: 340801 [2022-02-11 00:09:20,098 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:09:20,098 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 101 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:09:20,098 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 1794 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:09:20,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340801 states. [2022-02-11 00:09:28,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340801 to 329263. [2022-02-11 00:09:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329263 states, 329262 states have (on average 2.2905497749512547) internal successors, (754191), 329262 states have internal predecessors, (754191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329263 states to 329263 states and 754191 transitions. [2022-02-11 00:09:30,083 INFO L78 Accepts]: Start accepts. Automaton has 329263 states and 754191 transitions. Word has length 48 [2022-02-11 00:09:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:30,083 INFO L470 AbstractCegarLoop]: Abstraction has 329263 states and 754191 transitions. [2022-02-11 00:09:30,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:30,083 INFO L276 IsEmpty]: Start isEmpty. Operand 329263 states and 754191 transitions. [2022-02-11 00:09:30,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 00:09:30,402 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:30,402 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:30,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-02-11 00:09:30,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-02-11 00:09:30,603 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:30,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1209448943, now seen corresponding path program 133 times [2022-02-11 00:09:30,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:30,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356268337] [2022-02-11 00:09:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:30,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:30,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356268337] [2022-02-11 00:09:30,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356268337] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:30,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558058420] [2022-02-11 00:09:30,782 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:09:30,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:30,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:30,783 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:09:30,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-02-11 00:09:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:30,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-11 00:09:30,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:30,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:31,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558058420] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:31,059 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:31,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-11 00:09:31,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993294190] [2022-02-11 00:09:31,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:31,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:09:31,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:09:31,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:09:31,060 INFO L87 Difference]: Start difference. First operand 329263 states and 754191 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:33,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:33,240 INFO L93 Difference]: Finished difference Result 347624 states and 797383 transitions. [2022-02-11 00:09:33,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:09:33,240 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 00:09:33,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:34,693 INFO L225 Difference]: With dead ends: 347624 [2022-02-11 00:09:34,693 INFO L226 Difference]: Without dead ends: 347577 [2022-02-11 00:09:34,694 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:09:34,694 INFO L934 BasicCegarLoop]: 106 mSDtfsCounter, 99 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:09:34,694 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 1777 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:09:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347577 states. [2022-02-11 00:09:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347577 to 332674. [2022-02-11 00:09:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332674 states, 332673 states have (on average 2.292476395739961) internal successors, (762645), 332673 states have internal predecessors, (762645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332674 states to 332674 states and 762645 transitions. [2022-02-11 00:09:44,154 INFO L78 Accepts]: Start accepts. Automaton has 332674 states and 762645 transitions. Word has length 48 [2022-02-11 00:09:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:44,154 INFO L470 AbstractCegarLoop]: Abstraction has 332674 states and 762645 transitions. [2022-02-11 00:09:44,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:44,154 INFO L276 IsEmpty]: Start isEmpty. Operand 332674 states and 762645 transitions. [2022-02-11 00:09:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 00:09:44,441 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:44,442 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:44,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-02-11 00:09:44,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-02-11 00:09:44,642 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:44,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1173760607, now seen corresponding path program 134 times [2022-02-11 00:09:44,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:44,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262717147] [2022-02-11 00:09:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:44,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:44,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:44,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262717147] [2022-02-11 00:09:44,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262717147] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:44,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647783198] [2022-02-11 00:09:44,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:09:44,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:44,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:44,805 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:09:44,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-02-11 00:09:44,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:09:44,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:44,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-11 00:09:44,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:44,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:09:45,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647783198] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:45,075 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:45,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-11 00:09:45,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969277821] [2022-02-11 00:09:45,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:45,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:09:45,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:09:45,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:09:45,075 INFO L87 Difference]: Start difference. First operand 332674 states and 762645 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:47,372 INFO L93 Difference]: Finished difference Result 357431 states and 821264 transitions. [2022-02-11 00:09:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:09:47,372 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 00:09:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:48,912 INFO L225 Difference]: With dead ends: 357431 [2022-02-11 00:09:48,912 INFO L226 Difference]: Without dead ends: 357380 [2022-02-11 00:09:48,912 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:09:48,912 INFO L934 BasicCegarLoop]: 109 mSDtfsCounter, 105 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:09:48,912 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 1825 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:09:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357380 states. Received shutdown request... [2022-02-11 00:09:54,265 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 00:09:54,265 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 00:09:55,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2022-02-11 00:09:55,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-02-11 00:09:56,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357380 to 336168. [2022-02-11 00:09:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336168 states, 336167 states have (on average 2.2948742737984396) internal successors, (771461), 336167 states have internal predecessors, (771461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:56,612 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-11 00:09:56,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-02-11 00:09:56,612 WARN L594 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2022-02-11 00:09:56,614 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-11 00:09:56,614 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-11 00:09:56,616 INFO L733 BasicCegarLoop]: Path program histogram: [134, 6, 6, 1] [2022-02-11 00:09:56,618 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-11 00:09:56,618 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-11 00:09:56,621 INFO L202 PluginConnector]: Adding new model loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 12:09:56 BasicIcfg [2022-02-11 00:09:56,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-11 00:09:56,622 INFO L158 Benchmark]: Toolchain (without parser) took 665325.41ms. Allocated memory was 178.3MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 147.6MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. [2022-02-11 00:09:56,622 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 178.3MB. Free memory was 148.6MB in the beginning and 148.5MB in the end (delta: 78.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 00:09:56,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.96ms. Allocated memory is still 178.3MB. Free memory was 147.5MB in the beginning and 145.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-11 00:09:56,622 INFO L158 Benchmark]: Boogie Preprocessor took 11.69ms. Allocated memory is still 178.3MB. Free memory was 145.9MB in the beginning and 145.0MB in the end (delta: 867.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-11 00:09:56,622 INFO L158 Benchmark]: RCFGBuilder took 197.08ms. Allocated memory is still 178.3MB. Free memory was 144.8MB in the beginning and 136.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-11 00:09:56,622 INFO L158 Benchmark]: TraceAbstraction took 665092.78ms. Allocated memory was 178.3MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 135.6MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. [2022-02-11 00:09:56,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10ms. Allocated memory is still 178.3MB. Free memory was 148.6MB in the beginning and 148.5MB in the end (delta: 78.7kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.96ms. Allocated memory is still 178.3MB. Free memory was 147.5MB in the beginning and 145.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.69ms. Allocated memory is still 178.3MB. Free memory was 145.9MB in the beginning and 145.0MB in the end (delta: 867.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 197.08ms. Allocated memory is still 178.3MB. Free memory was 144.8MB in the beginning and 136.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 665092.78ms. Allocated memory was 178.3MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 135.6MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 41 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 665.0s, OverallIterations: 147, TraceHistogramMax: 4, PathProgramHistogramMax: 134, EmptinessCheckTime: 18.9s, AutomataDifference: 185.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24594 SdHoareTripleChecker+Valid, 21.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24594 mSDsluCounter, 66019 SdHoareTripleChecker+Invalid, 16.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 67796 mSDsCounter, 3389 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51635 IncrementalHoareTripleChecker+Invalid, 55024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3389 mSolverCounterUnsat, 8370 mSDtfsCounter, 51635 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13673 GetRequests, 9159 SyntacticMatches, 210 SemanticMatches, 4304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49198 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=363814occurred in iteration=140, InterpolantAutomatonStates: 4015, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 395.2s AutomataMinimizationTime, 147 MinimizatonAttempts, 1780169 StatesRemovedByMinimization, 146 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 32.3s InterpolantComputationTime, 9951 NumberOfCodeBlocks, 9948 NumberOfCodeBlocksAsserted, 552 NumberOfCheckSat, 14430 ConstructedInterpolants, 0 QuantifiedInterpolants, 65842 SizeOfPredicates, 424 NumberOfNonLiveVariables, 9205 ConjunctsInSsa, 1802 ConjunctsInUnsatCore, 423 InterpolantComputations, 9 PerfectInterpolantSequences, 4222/11870 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown