/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-11 00:17:00,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-11 00:17:00,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-11 00:17:00,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-11 00:17:00,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-11 00:17:00,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-11 00:17:00,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-11 00:17:00,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-11 00:17:00,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-11 00:17:00,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-11 00:17:00,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-11 00:17:00,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-11 00:17:00,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-11 00:17:00,289 INFO L138 SettingsManager]: * Use SBE=true [2022-02-11 00:17:00,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-11 00:17:00,290 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-11 00:17:00,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-11 00:17:00,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-11 00:17:00,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-11 00:17:00,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-11 00:17:00,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-11 00:17:00,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-11 00:17:00,291 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-11 00:17:00,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-11 00:17:00,291 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-11 00:17:00,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-11 00:17:00,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-11 00:17:00,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-11 00:17:00,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-11 00:17:00,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-11 00:17:00,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:17:00,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-11 00:17:00,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-11 00:17:00,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-11 00:17:00,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-11 00:17:00,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-11 00:17:00,293 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-11 00:17:00,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-11 00:17:00,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-11 00:17:00,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-11 00:17:00,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-11 00:17:00,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-11 00:17:00,527 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-11 00:17:00,528 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-11 00:17:00,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl [2022-02-11 00:17:00,530 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl' [2022-02-11 00:17:00,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-11 00:17:00,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-11 00:17:00,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-11 00:17:00,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-11 00:17:00,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-11 00:17:00,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/1) ... [2022-02-11 00:17:00,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/1) ... [2022-02-11 00:17:00,590 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-11 00:17:00,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-11 00:17:00,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-11 00:17:00,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-11 00:17:00,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-11 00:17:00,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/1) ... [2022-02-11 00:17:00,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/1) ... [2022-02-11 00:17:00,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/1) ... [2022-02-11 00:17:00,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/1) ... [2022-02-11 00:17:00,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/1) ... [2022-02-11 00:17:00,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/1) ... [2022-02-11 00:17:00,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/1) ... [2022-02-11 00:17:00,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-11 00:17:00,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-11 00:17:00,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-11 00:17:00,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-11 00:17:00,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/1) ... [2022-02-11 00:17:00,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:17:00,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:00,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-11 00:17:00,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-11 00:17:00,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-11 00:17:00,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-11 00:17:00,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-11 00:17:00,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-11 00:17:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-11 00:17:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-11 00:17:00,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-11 00:17:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-11 00:17:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-11 00:17:00,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-11 00:17:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-11 00:17:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-11 00:17:00,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-02-11 00:17:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-02-11 00:17:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-02-11 00:17:00,670 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-11 00:17:00,703 INFO L234 CfgBuilder]: Building ICFG [2022-02-11 00:17:00,704 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-11 00:17:00,821 INFO L275 CfgBuilder]: Performing block encoding [2022-02-11 00:17:00,827 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-11 00:17:00,827 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-11 00:17:00,828 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:17:00 BoogieIcfgContainer [2022-02-11 00:17:00,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-11 00:17:00,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-11 00:17:00,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-11 00:17:00,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-11 00:17:00,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:17:00" (1/2) ... [2022-02-11 00:17:00,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207026e0 and model type exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 12:17:00, skipping insertion in model container [2022-02-11 00:17:00,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:17:00" (2/2) ... [2022-02-11 00:17:00,834 INFO L112 eAbstractionObserver]: Analyzing ICFG exp2x6.wvr.bpl [2022-02-11 00:17:00,838 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-11 00:17:00,838 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-11 00:17:00,838 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-11 00:17:00,838 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-11 00:17:00,872 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-11 00:17:00,905 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-11 00:17:00,910 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-11 00:17:00,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-11 00:17:00,917 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 45 transitions, 122 flow [2022-02-11 00:17:01,195 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3204 states, 3203 states have (on average 3.9572275991258197) internal successors, (12675), 3203 states have internal predecessors, (12675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:01,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 3204 states, 3203 states have (on average 3.9572275991258197) internal successors, (12675), 3203 states have internal predecessors, (12675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:01,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-11 00:17:01,237 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:01,238 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:01,239 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:01,243 INFO L85 PathProgramCache]: Analyzing trace with hash 450232179, now seen corresponding path program 1 times [2022-02-11 00:17:01,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:01,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732839413] [2022-02-11 00:17:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:01,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:01,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:01,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732839413] [2022-02-11 00:17:01,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732839413] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:17:01,399 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:17:01,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-11 00:17:01,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224900589] [2022-02-11 00:17:01,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:17:01,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 00:17:01,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:01,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 00:17:01,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:17:01,442 INFO L87 Difference]: Start difference. First operand has 3204 states, 3203 states have (on average 3.9572275991258197) internal successors, (12675), 3203 states have internal predecessors, (12675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:01,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:01,583 INFO L93 Difference]: Finished difference Result 3629 states and 14324 transitions. [2022-02-11 00:17:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 00:17:01,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-11 00:17:01,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:01,631 INFO L225 Difference]: With dead ends: 3629 [2022-02-11 00:17:01,631 INFO L226 Difference]: Without dead ends: 3598 [2022-02-11 00:17:01,633 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:17:01,640 INFO L934 BasicCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:01,641 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2022-02-11 00:17:01,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3333. [2022-02-11 00:17:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3332 states have (on average 3.952280912364946) internal successors, (13169), 3332 states have internal predecessors, (13169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 13169 transitions. [2022-02-11 00:17:02,005 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 13169 transitions. Word has length 19 [2022-02-11 00:17:02,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:02,007 INFO L470 AbstractCegarLoop]: Abstraction has 3333 states and 13169 transitions. [2022-02-11 00:17:02,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:02,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 13169 transitions. [2022-02-11 00:17:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 00:17:02,023 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:02,023 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, 1, 1, 1] [2022-02-11 00:17:02,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-11 00:17:02,024 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:02,030 INFO L85 PathProgramCache]: Analyzing trace with hash -524256119, now seen corresponding path program 1 times [2022-02-11 00:17:02,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:02,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468027045] [2022-02-11 00:17:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:02,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:02,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:02,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468027045] [2022-02-11 00:17:02,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468027045] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:02,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580611891] [2022-02-11 00:17:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:02,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:02,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:02,163 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) [2022-02-11 00:17:02,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-11 00:17:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:02,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-11 00:17:02,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:02,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:02,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:02,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580611891] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:02,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:02,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-02-11 00:17:02,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586296486] [2022-02-11 00:17:02,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:02,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:17:02,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:02,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:17:02,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:17:02,384 INFO L87 Difference]: Start difference. First operand 3333 states and 13169 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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) [2022-02-11 00:17:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:02,633 INFO L93 Difference]: Finished difference Result 6205 states and 23911 transitions. [2022-02-11 00:17:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:17:02,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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 [2022-02-11 00:17:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:02,680 INFO L225 Difference]: With dead ends: 6205 [2022-02-11 00:17:02,681 INFO L226 Difference]: Without dead ends: 6205 [2022-02-11 00:17:02,681 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:17:02,682 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 105 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:02,682 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 121 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2022-02-11 00:17:02,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 3838. [2022-02-11 00:17:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 3.988272087568413) internal successors, (15303), 3837 states have internal predecessors, (15303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 15303 transitions. [2022-02-11 00:17:02,973 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 15303 transitions. Word has length 24 [2022-02-11 00:17:02,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:02,973 INFO L470 AbstractCegarLoop]: Abstraction has 3838 states and 15303 transitions. [2022-02-11 00:17:02,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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) [2022-02-11 00:17:02,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 15303 transitions. [2022-02-11 00:17:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 00:17:03,007 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:03,007 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, 1, 1, 1] [2022-02-11 00:17:03,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:03,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:03,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:03,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1859792702, now seen corresponding path program 1 times [2022-02-11 00:17:03,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:03,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074405438] [2022-02-11 00:17:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:03,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:03,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:03,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074405438] [2022-02-11 00:17:03,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074405438] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:17:03,284 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:17:03,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:17:03,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901976274] [2022-02-11 00:17:03,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:17:03,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 00:17:03,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:03,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 00:17:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:17:03,286 INFO L87 Difference]: Start difference. First operand 3838 states and 15303 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:03,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:03,422 INFO L93 Difference]: Finished difference Result 4614 states and 17875 transitions. [2022-02-11 00:17:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 00:17:03,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-11 00:17:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:03,454 INFO L225 Difference]: With dead ends: 4614 [2022-02-11 00:17:03,454 INFO L226 Difference]: Without dead ends: 4594 [2022-02-11 00:17:03,455 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:17:03,456 INFO L934 BasicCegarLoop]: 34 mSDtfsCounter, 52 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 61 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 [2022-02-11 00:17:03,456 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 61 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2022-02-11 00:17:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 4099. [2022-02-11 00:17:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 4098 states have (on average 3.9487554904831623) internal successors, (16182), 4098 states have internal predecessors, (16182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:03,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 16182 transitions. [2022-02-11 00:17:03,696 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 16182 transitions. Word has length 24 [2022-02-11 00:17:03,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:03,697 INFO L470 AbstractCegarLoop]: Abstraction has 4099 states and 16182 transitions. [2022-02-11 00:17:03,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:03,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 16182 transitions. [2022-02-11 00:17:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 00:17:03,712 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:03,712 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, 1, 1, 1] [2022-02-11 00:17:03,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-11 00:17:03,713 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:03,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1974963633, now seen corresponding path program 1 times [2022-02-11 00:17:03,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:03,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155107959] [2022-02-11 00:17:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:03,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:03,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:03,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155107959] [2022-02-11 00:17:03,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155107959] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:03,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441536929] [2022-02-11 00:17:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:03,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:03,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:03,758 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) [2022-02-11 00:17:03,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-11 00:17:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:03,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-11 00:17:03,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:03,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:03,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441536929] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:03,956 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:03,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-02-11 00:17:03,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014451327] [2022-02-11 00:17:03,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:03,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:17:03,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:03,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:17:03,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:17:03,958 INFO L87 Difference]: Start difference. First operand 4099 states and 16182 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:04,110 INFO L93 Difference]: Finished difference Result 7064 states and 27253 transitions. [2022-02-11 00:17:04,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:17:04,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-11 00:17:04,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:04,153 INFO L225 Difference]: With dead ends: 7064 [2022-02-11 00:17:04,154 INFO L226 Difference]: Without dead ends: 7064 [2022-02-11 00:17:04,154 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:17:04,155 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 108 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:04,155 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 125 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7064 states. [2022-02-11 00:17:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7064 to 4827. [2022-02-11 00:17:04,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4826 states have (on average 3.999171156237049) internal successors, (19300), 4826 states have internal predecessors, (19300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 19300 transitions. [2022-02-11 00:17:04,444 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 19300 transitions. Word has length 24 [2022-02-11 00:17:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:04,445 INFO L470 AbstractCegarLoop]: Abstraction has 4827 states and 19300 transitions. [2022-02-11 00:17:04,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 19300 transitions. [2022-02-11 00:17:04,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 00:17:04,467 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:04,467 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, 1, 1, 1] [2022-02-11 00:17:04,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:04,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-11 00:17:04,692 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:04,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1076479876, now seen corresponding path program 1 times [2022-02-11 00:17:04,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:04,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036708663] [2022-02-11 00:17:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:04,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:04,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:04,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036708663] [2022-02-11 00:17:04,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036708663] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:17:04,759 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:17:04,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:17:04,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140926562] [2022-02-11 00:17:04,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:17:04,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 00:17:04,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:04,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 00:17:04,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:17:04,760 INFO L87 Difference]: Start difference. First operand 4827 states and 19300 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:05,018 INFO L93 Difference]: Finished difference Result 5633 states and 21970 transitions. [2022-02-11 00:17:05,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 00:17:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-11 00:17:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:05,089 INFO L225 Difference]: With dead ends: 5633 [2022-02-11 00:17:05,090 INFO L226 Difference]: Without dead ends: 5568 [2022-02-11 00:17:05,090 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:17:05,091 INFO L934 BasicCegarLoop]: 36 mSDtfsCounter, 46 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:05,091 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 63 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2022-02-11 00:17:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5161. [2022-02-11 00:17:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 3.9622093023255816) internal successors, (20445), 5160 states have internal predecessors, (20445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 20445 transitions. [2022-02-11 00:17:05,450 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 20445 transitions. Word has length 24 [2022-02-11 00:17:05,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:05,450 INFO L470 AbstractCegarLoop]: Abstraction has 5161 states and 20445 transitions. [2022-02-11 00:17:05,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:05,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 20445 transitions. [2022-02-11 00:17:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 00:17:05,467 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:05,467 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, 1, 1, 1] [2022-02-11 00:17:05,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-11 00:17:05,467 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:05,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:05,468 INFO L85 PathProgramCache]: Analyzing trace with hash 50378376, now seen corresponding path program 2 times [2022-02-11 00:17:05,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:05,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129201711] [2022-02-11 00:17:05,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:05,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:05,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:05,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129201711] [2022-02-11 00:17:05,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129201711] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:17:05,506 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:17:05,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-11 00:17:05,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548905675] [2022-02-11 00:17:05,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:17:05,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:17:05,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:05,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:17:05,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:17:05,507 INFO L87 Difference]: Start difference. First operand 5161 states and 20445 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:05,634 INFO L93 Difference]: Finished difference Result 6066 states and 23776 transitions. [2022-02-11 00:17:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:17:05,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-11 00:17:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:05,678 INFO L225 Difference]: With dead ends: 6066 [2022-02-11 00:17:05,678 INFO L226 Difference]: Without dead ends: 6066 [2022-02-11 00:17:05,679 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:17:05,679 INFO L934 BasicCegarLoop]: 35 mSDtfsCounter, 63 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:05,679 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 89 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2022-02-11 00:17:06,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 5526. [2022-02-11 00:17:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5525 states have (on average 3.9632579185520362) internal successors, (21897), 5525 states have internal predecessors, (21897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 21897 transitions. [2022-02-11 00:17:06,148 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 21897 transitions. Word has length 24 [2022-02-11 00:17:06,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:06,148 INFO L470 AbstractCegarLoop]: Abstraction has 5526 states and 21897 transitions. [2022-02-11 00:17:06,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:06,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 21897 transitions. [2022-02-11 00:17:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 00:17:06,186 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:06,186 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, 1, 1, 1] [2022-02-11 00:17:06,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-11 00:17:06,186 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash -19268542, now seen corresponding path program 2 times [2022-02-11 00:17:06,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:06,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481027933] [2022-02-11 00:17:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:06,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:06,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:06,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481027933] [2022-02-11 00:17:06,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481027933] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:17:06,257 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:17:06,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-11 00:17:06,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112217005] [2022-02-11 00:17:06,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:17:06,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:17:06,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:17:06,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:17:06,259 INFO L87 Difference]: Start difference. First operand 5526 states and 21897 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:06,512 INFO L93 Difference]: Finished difference Result 6785 states and 26493 transitions. [2022-02-11 00:17:06,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:17:06,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-11 00:17:06,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:06,561 INFO L225 Difference]: With dead ends: 6785 [2022-02-11 00:17:06,562 INFO L226 Difference]: Without dead ends: 6785 [2022-02-11 00:17:06,562 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:17:06,563 INFO L934 BasicCegarLoop]: 37 mSDtfsCounter, 85 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:06,563 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 82 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:06,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6785 states. [2022-02-11 00:17:06,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6785 to 6067. [2022-02-11 00:17:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6067 states, 6066 states have (on average 3.9658753709198815) internal successors, (24057), 6066 states have internal predecessors, (24057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6067 states to 6067 states and 24057 transitions. [2022-02-11 00:17:06,860 INFO L78 Accepts]: Start accepts. Automaton has 6067 states and 24057 transitions. Word has length 24 [2022-02-11 00:17:06,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:06,860 INFO L470 AbstractCegarLoop]: Abstraction has 6067 states and 24057 transitions. [2022-02-11 00:17:06,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 6067 states and 24057 transitions. [2022-02-11 00:17:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:06,883 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:06,883 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:06,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-11 00:17:06,883 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1048604648, now seen corresponding path program 1 times [2022-02-11 00:17:06,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:06,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922457646] [2022-02-11 00:17:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:07,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:07,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922457646] [2022-02-11 00:17:07,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922457646] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:07,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215823620] [2022-02-11 00:17:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:07,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:07,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:07,085 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) [2022-02-11 00:17:07,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-11 00:17:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:07,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-11 00:17:07,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:08,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:08,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215823620] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:08,254 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:08,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 10 [2022-02-11 00:17:08,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263720397] [2022-02-11 00:17:08,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:08,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:08,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:08,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:08,255 INFO L87 Difference]: Start difference. First operand 6067 states and 24057 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2022-02-11 00:17:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:09,200 INFO L93 Difference]: Finished difference Result 8499 states and 32997 transitions. [2022-02-11 00:17:09,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:17:09,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-02-11 00:17:09,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:09,238 INFO L225 Difference]: With dead ends: 8499 [2022-02-11 00:17:09,239 INFO L226 Difference]: Without dead ends: 8363 [2022-02-11 00:17:09,239 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:09,240 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 124 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:09,240 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 242 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:17:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2022-02-11 00:17:09,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 6744. [2022-02-11 00:17:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6743 states have (on average 3.9549162094023433) internal successors, (26668), 6743 states have internal predecessors, (26668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 26668 transitions. [2022-02-11 00:17:09,486 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 26668 transitions. Word has length 29 [2022-02-11 00:17:09,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:09,487 INFO L470 AbstractCegarLoop]: Abstraction has 6744 states and 26668 transitions. [2022-02-11 00:17:09,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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) [2022-02-11 00:17:09,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 26668 transitions. [2022-02-11 00:17:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:09,576 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:09,576 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:09,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:09,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:09,796 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:09,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:09,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1458786176, now seen corresponding path program 2 times [2022-02-11 00:17:09,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:09,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647209649] [2022-02-11 00:17:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:09,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:09,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:09,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647209649] [2022-02-11 00:17:09,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647209649] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:09,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216731814] [2022-02-11 00:17:09,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:17:09,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:09,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:09,933 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) [2022-02-11 00:17:09,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-11 00:17:09,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:17:09,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:09,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-11 00:17:09,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:11,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:11,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216731814] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:11,164 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:11,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 11 [2022-02-11 00:17:11,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777628067] [2022-02-11 00:17:11,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:11,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:17:11,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:17:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:17:11,165 INFO L87 Difference]: Start difference. First operand 6744 states and 26668 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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) [2022-02-11 00:17:12,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:12,775 INFO L93 Difference]: Finished difference Result 10094 states and 39061 transitions. [2022-02-11 00:17:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 00:17:12,776 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-02-11 00:17:12,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:12,824 INFO L225 Difference]: With dead ends: 10094 [2022-02-11 00:17:12,824 INFO L226 Difference]: Without dead ends: 9890 [2022-02-11 00:17:12,825 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 13 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:17:12,825 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 144 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:12,825 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 279 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-11 00:17:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9890 states. [2022-02-11 00:17:13,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9890 to 7521. [2022-02-11 00:17:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7521 states, 7520 states have (on average 3.9558510638297872) internal successors, (29748), 7520 states have internal predecessors, (29748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7521 states to 7521 states and 29748 transitions. [2022-02-11 00:17:13,142 INFO L78 Accepts]: Start accepts. Automaton has 7521 states and 29748 transitions. Word has length 29 [2022-02-11 00:17:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:13,142 INFO L470 AbstractCegarLoop]: Abstraction has 7521 states and 29748 transitions. [2022-02-11 00:17:13,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 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) [2022-02-11 00:17:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 7521 states and 29748 transitions. [2022-02-11 00:17:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:13,169 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:13,169 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:13,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:13,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:13,392 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:13,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1515297138, now seen corresponding path program 3 times [2022-02-11 00:17:13,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:13,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967784084] [2022-02-11 00:17:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:13,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:13,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:13,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967784084] [2022-02-11 00:17:13,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967784084] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:13,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757524322] [2022-02-11 00:17:13,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:17:13,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:13,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:13,533 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) [2022-02-11 00:17:13,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-11 00:17:13,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:17:13,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:13,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-11 00:17:13,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:14,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:14,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:14,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757524322] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:14,801 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:14,801 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 12 [2022-02-11 00:17:14,802 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451677601] [2022-02-11 00:17:14,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:14,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-11 00:17:14,802 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-11 00:17:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:17:14,803 INFO L87 Difference]: Start difference. First operand 7521 states and 29748 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) 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) [2022-02-11 00:17:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:16,780 INFO L93 Difference]: Finished difference Result 11487 states and 44565 transitions. [2022-02-11 00:17:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:17:16,781 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) 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 29 [2022-02-11 00:17:16,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:16,833 INFO L225 Difference]: With dead ends: 11487 [2022-02-11 00:17:16,833 INFO L226 Difference]: Without dead ends: 11283 [2022-02-11 00:17:16,834 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 12 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:17:16,836 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 167 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:16,837 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 297 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-11 00:17:16,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11283 states. [2022-02-11 00:17:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11283 to 8545. [2022-02-11 00:17:17,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 8544 states have (on average 3.958918539325843) internal successors, (33825), 8544 states have internal predecessors, (33825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 33825 transitions. [2022-02-11 00:17:17,562 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 33825 transitions. Word has length 29 [2022-02-11 00:17:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:17,562 INFO L470 AbstractCegarLoop]: Abstraction has 8545 states and 33825 transitions. [2022-02-11 00:17:17,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) 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) [2022-02-11 00:17:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 33825 transitions. [2022-02-11 00:17:17,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:17,628 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:17,628 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:17,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:17,847 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,SelfDestructingSolverStorable9 [2022-02-11 00:17:17,848 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1805295454, now seen corresponding path program 4 times [2022-02-11 00:17:17,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:17,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627300248] [2022-02-11 00:17:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:17,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:18,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:18,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627300248] [2022-02-11 00:17:18,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627300248] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:18,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674942882] [2022-02-11 00:17:18,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:17:18,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:18,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:18,038 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) [2022-02-11 00:17:18,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-11 00:17:18,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:17:18,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:18,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-11 00:17:18,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:20,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:20,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674942882] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:20,208 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:20,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 13 [2022-02-11 00:17:20,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605723475] [2022-02-11 00:17:20,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:20,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-11 00:17:20,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-11 00:17:20,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:17:20,211 INFO L87 Difference]: Start difference. First operand 8545 states and 33825 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) 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 00:17:23,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:23,198 INFO L93 Difference]: Finished difference Result 11493 states and 44847 transitions. [2022-02-11 00:17:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:17:23,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) 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 29 [2022-02-11 00:17:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:23,244 INFO L225 Difference]: With dead ends: 11493 [2022-02-11 00:17:23,245 INFO L226 Difference]: Without dead ends: 11357 [2022-02-11 00:17:23,245 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:17:23,245 INFO L934 BasicCegarLoop]: 47 mSDtfsCounter, 165 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:23,246 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 342 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-11 00:17:23,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11357 states. [2022-02-11 00:17:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11357 to 9738. [2022-02-11 00:17:23,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9738 states, 9737 states have (on average 3.96333572969087) internal successors, (38591), 9737 states have internal predecessors, (38591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 38591 transitions. [2022-02-11 00:17:23,550 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 38591 transitions. Word has length 29 [2022-02-11 00:17:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:23,550 INFO L470 AbstractCegarLoop]: Abstraction has 9738 states and 38591 transitions. [2022-02-11 00:17:23,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) 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 00:17:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 38591 transitions. [2022-02-11 00:17:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:23,579 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:23,580 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:23,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:23,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:23,796 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1672319534, now seen corresponding path program 5 times [2022-02-11 00:17:23,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:23,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359679935] [2022-02-11 00:17:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:17:23,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:23,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359679935] [2022-02-11 00:17:23,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359679935] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:17:23,898 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:17:23,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-11 00:17:23,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818990845] [2022-02-11 00:17:23,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:17:23,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:17:23,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:23,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:17:23,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:17:23,899 INFO L87 Difference]: Start difference. First operand 9738 states and 38591 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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) [2022-02-11 00:17:24,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:24,295 INFO L93 Difference]: Finished difference Result 12122 states and 47539 transitions. [2022-02-11 00:17:24,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:17:24,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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 29 [2022-02-11 00:17:24,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:24,344 INFO L225 Difference]: With dead ends: 12122 [2022-02-11 00:17:24,345 INFO L226 Difference]: Without dead ends: 12054 [2022-02-11 00:17:24,345 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:17:24,345 INFO L934 BasicCegarLoop]: 33 mSDtfsCounter, 71 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:24,346 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 126 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:17:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12054 states. [2022-02-11 00:17:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12054 to 11043. [2022-02-11 00:17:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11043 states, 11042 states have (on average 3.967034957435247) internal successors, (43804), 11042 states have internal predecessors, (43804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11043 states to 11043 states and 43804 transitions. [2022-02-11 00:17:24,674 INFO L78 Accepts]: Start accepts. Automaton has 11043 states and 43804 transitions. Word has length 29 [2022-02-11 00:17:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:24,675 INFO L470 AbstractCegarLoop]: Abstraction has 11043 states and 43804 transitions. [2022-02-11 00:17:24,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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) [2022-02-11 00:17:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 11043 states and 43804 transitions. [2022-02-11 00:17:24,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:24,708 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:24,708 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:24,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-11 00:17:24,708 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:24,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:24,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1478967768, now seen corresponding path program 1 times [2022-02-11 00:17:24,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:24,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831944144] [2022-02-11 00:17:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:24,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:24,811 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:24,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831944144] [2022-02-11 00:17:24,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831944144] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:24,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709398361] [2022-02-11 00:17:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:24,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:24,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:24,813 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) [2022-02-11 00:17:24,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-11 00:17:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:24,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-11 00:17:24,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:25,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:25,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709398361] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:25,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:25,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 10 [2022-02-11 00:17:25,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688498427] [2022-02-11 00:17:25,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:25,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:25,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:25,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:25,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:25,504 INFO L87 Difference]: Start difference. First operand 11043 states and 43804 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 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) [2022-02-11 00:17:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:26,416 INFO L93 Difference]: Finished difference Result 13109 states and 51239 transitions. [2022-02-11 00:17:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:17:26,417 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 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 29 [2022-02-11 00:17:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:26,473 INFO L225 Difference]: With dead ends: 13109 [2022-02-11 00:17:26,473 INFO L226 Difference]: Without dead ends: 13007 [2022-02-11 00:17:26,473 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:26,474 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 124 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:26,474 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 244 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:17:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13007 states. [2022-02-11 00:17:26,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13007 to 11738. [2022-02-11 00:17:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11738 states, 11737 states have (on average 3.9537360483939676) internal successors, (46405), 11737 states have internal predecessors, (46405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11738 states to 11738 states and 46405 transitions. [2022-02-11 00:17:26,818 INFO L78 Accepts]: Start accepts. Automaton has 11738 states and 46405 transitions. Word has length 29 [2022-02-11 00:17:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:26,818 INFO L470 AbstractCegarLoop]: Abstraction has 11738 states and 46405 transitions. [2022-02-11 00:17:26,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 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) [2022-02-11 00:17:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 11738 states and 46405 transitions. [2022-02-11 00:17:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:26,850 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:26,850 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:26,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-02-11 00:17:27,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:27,072 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:27,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:27,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1794307392, now seen corresponding path program 2 times [2022-02-11 00:17:27,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:27,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761464897] [2022-02-11 00:17:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:27,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:27,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:27,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761464897] [2022-02-11 00:17:27,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761464897] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:27,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325700090] [2022-02-11 00:17:27,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:17:27,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:27,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:27,180 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) [2022-02-11 00:17:27,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-11 00:17:27,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:17:27,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:27,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-11 00:17:27,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:28,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:28,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325700090] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:28,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:28,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 11 [2022-02-11 00:17:28,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420317374] [2022-02-11 00:17:28,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:28,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:17:28,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:17:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:17:28,430 INFO L87 Difference]: Start difference. First operand 11738 states and 46405 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 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) [2022-02-11 00:17:29,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:29,402 INFO L93 Difference]: Finished difference Result 14654 states and 56991 transitions. [2022-02-11 00:17:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 00:17:29,403 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 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 29 [2022-02-11 00:17:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:29,452 INFO L225 Difference]: With dead ends: 14654 [2022-02-11 00:17:29,452 INFO L226 Difference]: Without dead ends: 14501 [2022-02-11 00:17:29,453 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 13 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:17:29,454 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 144 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:29,454 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 275 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:17:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14501 states. [2022-02-11 00:17:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14501 to 12515. [2022-02-11 00:17:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12515 states, 12514 states have (on average 3.949656384848969) internal successors, (49426), 12514 states have internal predecessors, (49426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12515 states to 12515 states and 49426 transitions. [2022-02-11 00:17:29,769 INFO L78 Accepts]: Start accepts. Automaton has 12515 states and 49426 transitions. Word has length 29 [2022-02-11 00:17:29,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:29,769 INFO L470 AbstractCegarLoop]: Abstraction has 12515 states and 49426 transitions. [2022-02-11 00:17:29,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 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) [2022-02-11 00:17:29,770 INFO L276 IsEmpty]: Start isEmpty. Operand 12515 states and 49426 transitions. [2022-02-11 00:17:29,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:29,803 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:29,803 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:29,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:30,019 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,SelfDestructingSolverStorable13 [2022-02-11 00:17:30,019 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:30,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1574438962, now seen corresponding path program 3 times [2022-02-11 00:17:30,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:30,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331209595] [2022-02-11 00:17:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:30,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:30,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:30,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331209595] [2022-02-11 00:17:30,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331209595] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:30,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622658725] [2022-02-11 00:17:30,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:17:30,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:30,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:30,117 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) [2022-02-11 00:17:30,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-11 00:17:30,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:17:30,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:30,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-11 00:17:30,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:30,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:30,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622658725] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:30,964 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:30,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 12 [2022-02-11 00:17:30,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705908599] [2022-02-11 00:17:30,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:30,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-11 00:17:30,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-11 00:17:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:17:30,966 INFO L87 Difference]: Start difference. First operand 12515 states and 49426 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 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) [2022-02-11 00:17:32,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:32,090 INFO L93 Difference]: Finished difference Result 16013 states and 62264 transitions. [2022-02-11 00:17:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:17:32,091 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-02-11 00:17:32,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:32,161 INFO L225 Difference]: With dead ends: 16013 [2022-02-11 00:17:32,161 INFO L226 Difference]: Without dead ends: 15860 [2022-02-11 00:17:32,162 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 12 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:17:32,162 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 167 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:32,162 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 268 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 00:17:32,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15860 states. [2022-02-11 00:17:32,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15860 to 13539. [2022-02-11 00:17:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13539 states, 13538 states have (on average 3.9462993056581475) internal successors, (53425), 13538 states have internal predecessors, (53425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 53425 transitions. [2022-02-11 00:17:32,593 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 53425 transitions. Word has length 29 [2022-02-11 00:17:32,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:32,593 INFO L470 AbstractCegarLoop]: Abstraction has 13539 states and 53425 transitions. [2022-02-11 00:17:32,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 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) [2022-02-11 00:17:32,593 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 53425 transitions. [2022-02-11 00:17:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:32,634 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:32,634 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:32,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:32,847 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,SelfDestructingSolverStorable14 [2022-02-11 00:17:32,848 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash -969860962, now seen corresponding path program 4 times [2022-02-11 00:17:32,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:32,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544623217] [2022-02-11 00:17:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:32,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:32,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544623217] [2022-02-11 00:17:32,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544623217] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:32,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050496122] [2022-02-11 00:17:32,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:17:32,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:32,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:32,955 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) [2022-02-11 00:17:32,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-11 00:17:32,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:17:32,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:32,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-11 00:17:32,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-02-11 00:31:41,501 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 00:31:41,501 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 00:31:41,962 WARN L244 SmtUtils]: Removed 1 from assertion stack [2022-02-11 00:31:41,964 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2022-02-11 00:31:41,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-11 00:31:42,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-11 00:31:42,179 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1087-1 term,while PolyPacSimplificationTermWalker was simplifying 1087 xjuncts wrt. a ATOM-1 context. [2022-02-11 00:31:42,181 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-02-11 00:31:42,181 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-02-11 00:31:42,181 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-02-11 00:31:42,181 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-02-11 00:31:42,184 INFO L733 BasicCegarLoop]: Path program histogram: [5, 4, 2, 2, 1, 1, 1] [2022-02-11 00:31:42,185 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-11 00:31:42,185 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-11 00:31:42,187 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 12:31:42 BasicIcfg [2022-02-11 00:31:42,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-11 00:31:42,187 INFO L158 Benchmark]: Toolchain (without parser) took 881622.74ms. Allocated memory was 159.4MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 116.2MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2022-02-11 00:31:42,187 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 159.4MB. Free memory is still 117.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 00:31:42,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.05ms. Allocated memory is still 159.4MB. Free memory was 116.2MB in the beginning and 114.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-11 00:31:42,188 INFO L158 Benchmark]: Boogie Preprocessor took 14.01ms. Allocated memory is still 159.4MB. Free memory was 114.6MB in the beginning and 113.6MB in the end (delta: 976.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-11 00:31:42,188 INFO L158 Benchmark]: RCFGBuilder took 221.15ms. Allocated memory is still 159.4MB. Free memory was 113.6MB in the beginning and 104.1MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-11 00:31:42,188 INFO L158 Benchmark]: TraceAbstraction took 881357.49ms. Allocated memory was 159.4MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 103.6MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2022-02-11 00:31:42,189 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 0.11ms. Allocated memory is still 159.4MB. Free memory is still 117.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.05ms. Allocated memory is still 159.4MB. Free memory was 116.2MB in the beginning and 114.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.01ms. Allocated memory is still 159.4MB. Free memory was 114.6MB in the beginning and 113.6MB in the end (delta: 976.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 221.15ms. Allocated memory is still 159.4MB. Free memory was 113.6MB in the beginning and 104.1MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 881357.49ms. Allocated memory was 159.4MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 103.6MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 2.4GB. 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: 72]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1087-1 term,while PolyPacSimplificationTermWalker was simplifying 1087 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1087-1 term,while PolyPacSimplificationTermWalker was simplifying 1087 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1087-1 term,while PolyPacSimplificationTermWalker was simplifying 1087 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1087-1 term,while PolyPacSimplificationTermWalker was simplifying 1087 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-1087-1 term,while PolyPacSimplificationTermWalker was simplifying 1087 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 74 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 881.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.5s, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1569 SdHoareTripleChecker+Valid, 10.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1569 mSDsluCounter, 2638 SdHoareTripleChecker+Invalid, 9.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4027 mSDsCounter, 460 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12262 IncrementalHoareTripleChecker+Invalid, 12722 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 460 mSolverCounterUnsat, 581 mSDtfsCounter, 12262 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 592 GetRequests, 404 SyntacticMatches, 90 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13539occurred in iteration=15, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 21961 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 646 NumberOfCodeBlocks, 646 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 864 ConstructedInterpolants, 0 QuantifiedInterpolants, 16244 SizeOfPredicates, 32 NumberOfNonLiveVariables, 666 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 33 InterpolantComputations, 6 PerfectInterpolantSequences, 21/54 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