/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-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 13:45:41,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 13:45:41,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 13:45:41,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-16 13:45:41,289 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-MCRwithDepranks-BasicCegarLoop.epf [2022-02-16 13:45:41,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 13:45:41,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 13:45:41,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 13:45:41,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 13:45:41,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 13:45:41,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 13:45:41,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 13:45:41,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 13:45:41,307 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 13:45:41,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 13:45:41,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 13:45:41,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 13:45:41,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 13:45:41,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 13:45:41,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 13:45:41,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 13:45:41,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 13:45:41,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 13:45:41,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 13:45:41,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 13:45:41,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 13:45:41,309 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 13:45:41,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 13:45:41,310 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-16 13:45:41,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 13:45:41,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 13:45:41,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 13:45:41,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 13:45:41,521 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-16 13:45:41,522 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-16 13:45:41,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-trans.wvr.bpl [2022-02-16 13:45:41,523 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-trans.wvr.bpl' [2022-02-16 13:45:41,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 13:45:41,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-16 13:45:41,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 13:45:41,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 13:45:41,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 13:45:41,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/1) ... [2022-02-16 13:45:41,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/1) ... [2022-02-16 13:45:41,571 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-16 13:45:41,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 13:45:41,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 13:45:41,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 13:45:41,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 13:45:41,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/1) ... [2022-02-16 13:45:41,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/1) ... [2022-02-16 13:45:41,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/1) ... [2022-02-16 13:45:41,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/1) ... [2022-02-16 13:45:41,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/1) ... [2022-02-16 13:45:41,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/1) ... [2022-02-16 13:45:41,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/1) ... [2022-02-16 13:45:41,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 13:45:41,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 13:45:41,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 13:45:41,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 13:45:41,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/1) ... [2022-02-16 13:45:41,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 13:45:41,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:45:41,617 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) [2022-02-16 13:45:41,625 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 [2022-02-16 13:45:41,645 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-16 13:45:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-16 13:45:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-16 13:45:41,646 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-16 13:45:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-16 13:45:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-16 13:45:41,646 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-16 13:45:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 13:45:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 13:45:41,646 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-16 13:45:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-16 13:45:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-16 13:45:41,647 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 13:45:41,682 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 13:45:41,683 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 13:45:41,788 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 13:45:41,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 13:45:41,793 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-16 13:45:41,794 INFO L202 PluginConnector]: Adding new model file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:45:41 BoogieIcfgContainer [2022-02-16 13:45:41,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 13:45:41,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 13:45:41,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 13:45:41,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 13:45:41,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 01:45:41" (1/2) ... [2022-02-16 13:45:41,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa42bcb and model type file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:45:41, skipping insertion in model container [2022-02-16 13:45:41,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:45:41" (2/2) ... [2022-02-16 13:45:41,800 INFO L111 eAbstractionObserver]: Analyzing ICFG file-item-trans.wvr.bpl [2022-02-16 13:45:41,803 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 13:45:41,804 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 13:45:41,804 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 13:45:41,804 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 13:45:41,826 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-16 13:45:41,858 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 13:45:41,865 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 13:45:41,865 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-16 13:45:41,874 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 62 flow [2022-02-16 13:45:41,896 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 55 states, 54 states have (on average 2.037037037037037) internal successors, (110), 54 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:41,988 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 284 transitions and produced 161 states. [2022-02-16 13:45:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 103 states have (on average 1.5533980582524272) internal successors, (160), 160 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-16 13:45:42,007 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:45:42,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:45:42,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 13:45:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:45:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash -244673510, now seen corresponding path program 1 times [2022-02-16 13:45:42,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:45:42,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571122560] [2022-02-16 13:45:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:45:42,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:45:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:45:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:45:42,357 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:45:42,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571122560] [2022-02-16 13:45:42,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571122560] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:45:42,357 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:45:42,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-16 13:45:42,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632488189] [2022-02-16 13:45:42,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:45:42,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 13:45:42,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:45:42,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 13:45:42,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-16 13:45:42,409 INFO L87 Difference]: Start difference. First operand has 161 states, 103 states have (on average 1.5533980582524272) internal successors, (160), 160 states have internal predecessors, (160), 0 states have call successors, (0), 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 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:45:42,574 INFO L93 Difference]: Finished difference Result 159 states and 158 transitions. [2022-02-16 13:45:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-16 13:45:42,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-16 13:45:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:45:42,581 INFO L225 Difference]: With dead ends: 159 [2022-02-16 13:45:42,581 INFO L226 Difference]: Without dead ends: 57 [2022-02-16 13:45:42,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-16 13:45:42,585 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:45:42,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 25 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:45:42,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-16 13:45:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 26. [2022-02-16 13:45:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 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) [2022-02-16 13:45:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-02-16 13:45:42,607 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2022-02-16 13:45:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:45:42,607 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-02-16 13:45:42,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:42,608 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-02-16 13:45:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-16 13:45:42,608 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:45:42,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:45:42,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 13:45:42,609 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 13:45:42,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:45:42,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2100038140, now seen corresponding path program 2 times [2022-02-16 13:45:42,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:45:42,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132102621] [2022-02-16 13:45:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:45:42,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:45:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:45:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:45:42,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:45:42,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132102621] [2022-02-16 13:45:42,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132102621] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:45:42,767 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:45:42,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-16 13:45:42,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393005731] [2022-02-16 13:45:42,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:45:42,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 13:45:42,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:45:42,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 13:45:42,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-16 13:45:42,769 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:42,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:45:42,877 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2022-02-16 13:45:42,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-16 13:45:42,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-16 13:45:42,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:45:42,879 INFO L225 Difference]: With dead ends: 40 [2022-02-16 13:45:42,879 INFO L226 Difference]: Without dead ends: 31 [2022-02-16 13:45:42,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-16 13:45:42,881 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 32 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:45:42,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 20 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:45:42,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-16 13:45:42,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2022-02-16 13:45:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-02-16 13:45:42,890 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2022-02-16 13:45:42,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:45:42,890 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-02-16 13:45:42,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:42,891 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-02-16 13:45:42,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-16 13:45:42,892 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:45:42,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:45:42,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 13:45:42,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 13:45:42,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:45:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1834608260, now seen corresponding path program 3 times [2022-02-16 13:45:42,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:45:42,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544339359] [2022-02-16 13:45:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:45:42,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:45:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:45:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:45:43,029 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:45:43,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544339359] [2022-02-16 13:45:43,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544339359] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:45:43,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:45:43,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-16 13:45:43,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260437824] [2022-02-16 13:45:43,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:45:43,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 13:45:43,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:45:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 13:45:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-16 13:45:43,042 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:45:43,165 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2022-02-16 13:45:43,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-16 13:45:43,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-16 13:45:43,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:45:43,166 INFO L225 Difference]: With dead ends: 37 [2022-02-16 13:45:43,166 INFO L226 Difference]: Without dead ends: 29 [2022-02-16 13:45:43,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-16 13:45:43,167 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:45:43,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 17 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:45:43,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-16 13:45:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2022-02-16 13:45:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-02-16 13:45:43,169 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2022-02-16 13:45:43,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:45:43,169 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-02-16 13:45:43,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-02-16 13:45:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-16 13:45:43,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:45:43,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:45:43,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-16 13:45:43,170 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 13:45:43,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:45:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1442414972, now seen corresponding path program 4 times [2022-02-16 13:45:43,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:45:43,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289489951] [2022-02-16 13:45:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:45:43,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:45:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:45:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:45:43,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:45:43,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289489951] [2022-02-16 13:45:43,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289489951] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:45:43,300 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:45:43,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-16 13:45:43,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630423546] [2022-02-16 13:45:43,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:45:43,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 13:45:43,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:45:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 13:45:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-16 13:45:43,303 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:45:43,407 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-02-16 13:45:43,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-16 13:45:43,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-16 13:45:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:45:43,408 INFO L225 Difference]: With dead ends: 26 [2022-02-16 13:45:43,408 INFO L226 Difference]: Without dead ends: 17 [2022-02-16 13:45:43,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-16 13:45:43,409 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:45:43,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 20 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:45:43,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-02-16 13:45:43,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-02-16 13:45:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-02-16 13:45:43,410 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2022-02-16 13:45:43,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:45:43,411 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-02-16 13:45:43,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,411 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-02-16 13:45:43,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-16 13:45:43,415 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:45:43,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:45:43,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-16 13:45:43,417 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 13:45:43,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:45:43,417 INFO L85 PathProgramCache]: Analyzing trace with hash 531109598, now seen corresponding path program 5 times [2022-02-16 13:45:43,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:45:43,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310014065] [2022-02-16 13:45:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:45:43,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:45:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:45:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:45:43,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:45:43,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310014065] [2022-02-16 13:45:43,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310014065] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:45:43,525 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:45:43,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-16 13:45:43,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939967100] [2022-02-16 13:45:43,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:45:43,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 13:45:43,526 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:45:43,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 13:45:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-16 13:45:43,527 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:45:43,620 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2022-02-16 13:45:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-16 13:45:43,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-16 13:45:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:45:43,620 INFO L225 Difference]: With dead ends: 23 [2022-02-16 13:45:43,620 INFO L226 Difference]: Without dead ends: 15 [2022-02-16 13:45:43,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-16 13:45:43,621 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 28 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:45:43,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 9 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:45:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-02-16 13:45:43,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-02-16 13:45:43,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2022-02-16 13:45:43,623 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2022-02-16 13:45:43,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:45:43,623 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2022-02-16 13:45:43,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,623 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2022-02-16 13:45:43,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-16 13:45:43,623 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:45:43,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:45:43,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-16 13:45:43,624 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 13:45:43,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:45:43,624 INFO L85 PathProgramCache]: Analyzing trace with hash 202726716, now seen corresponding path program 6 times [2022-02-16 13:45:43,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:45:43,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151675892] [2022-02-16 13:45:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:45:43,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:45:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:45:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:45:43,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:45:43,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151675892] [2022-02-16 13:45:43,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151675892] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:45:43,706 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:45:43,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-16 13:45:43,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479418102] [2022-02-16 13:45:43,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:45:43,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 13:45:43,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:45:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 13:45:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-16 13:45:43,708 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:45:43,773 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-02-16 13:45:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-16 13:45:43,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-16 13:45:43,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:45:43,774 INFO L225 Difference]: With dead ends: 13 [2022-02-16 13:45:43,774 INFO L226 Difference]: Without dead ends: 0 [2022-02-16 13:45:43,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-16 13:45:43,776 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:45:43,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:45:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-16 13:45:43,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-16 13:45:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-16 13:45:43,777 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-02-16 13:45:43,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:45:43,777 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-16 13:45:43,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:45:43,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-16 13:45:43,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-16 13:45:43,779 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-16 13:45:43,779 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-16 13:45:43,779 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-16 13:45:43,779 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-16 13:45:43,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-16 13:45:43,782 INFO L732 BasicCegarLoop]: Path program histogram: [6] [2022-02-16 13:45:43,784 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-16 13:45:43,784 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-16 13:45:43,788 INFO L202 PluginConnector]: Adding new model file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 01:45:43 BasicIcfg [2022-02-16 13:45:43,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-16 13:45:43,788 INFO L158 Benchmark]: Toolchain (without parser) took 2237.25ms. Allocated memory was 178.3MB in the beginning and 259.0MB in the end (delta: 80.7MB). Free memory was 137.8MB in the beginning and 126.4MB in the end (delta: 11.4MB). Peak memory consumption was 93.6MB. Max. memory is 8.0GB. [2022-02-16 13:45:43,789 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-16 13:45:43,789 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.12ms. Allocated memory is still 178.3MB. Free memory was 137.7MB in the beginning and 136.2MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-16 13:45:43,789 INFO L158 Benchmark]: Boogie Preprocessor took 19.18ms. Allocated memory is still 178.3MB. Free memory was 136.2MB in the beginning and 135.3MB in the end (delta: 894.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-16 13:45:43,789 INFO L158 Benchmark]: RCFGBuilder took 201.29ms. Allocated memory is still 178.3MB. Free memory was 135.3MB in the beginning and 126.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-16 13:45:43,789 INFO L158 Benchmark]: TraceAbstraction took 1992.81ms. Allocated memory was 178.3MB in the beginning and 259.0MB in the end (delta: 80.7MB). Free memory was 126.2MB in the beginning and 126.4MB in the end (delta: -188.4kB). Peak memory consumption was 81.0MB. Max. memory is 8.0GB. [2022-02-16 13:45:43,790 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 0.12ms. Allocated memory is still 178.3MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.12ms. Allocated memory is still 178.3MB. Free memory was 137.7MB in the beginning and 136.2MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.18ms. Allocated memory is still 178.3MB. Free memory was 136.2MB in the beginning and 135.3MB in the end (delta: 894.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 201.29ms. Allocated memory is still 178.3MB. Free memory was 135.3MB in the beginning and 126.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1992.81ms. Allocated memory was 178.3MB in the beginning and 259.0MB in the end (delta: 80.7MB). Free memory was 126.2MB in the beginning and 126.4MB in the end (delta: -188.4kB). Peak memory consumption was 81.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149 mSDsluCounter, 95 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 202 IncrementalHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 44 mSDtfsCounter, 202 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 1325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-16 13:45:43,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...