/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/popl20-more/vector-add.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 03:57:38,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 03:57:38,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 03:57:38,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 03:57:38,981 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 [2022-02-10 03:57:39,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 03:57:39,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 03:57:39,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 03:57:39,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 03:57:39,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 03:57:39,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 03:57:39,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 03:57:39,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 03:57:39,007 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 03:57:39,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 03:57:39,008 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 03:57:39,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 03:57:39,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 03:57:39,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 03:57:39,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 03:57:39,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 03:57:39,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 03:57:39,008 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 03:57:39,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 03:57:39,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 03:57:39,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 03:57:39,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 03:57:39,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 03:57:39,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 03:57:39,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 03:57:39,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 03:57:39,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 03:57:39,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 03:57:39,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 03:57:39,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 03:57:39,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 03:57:39,011 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 03:57:39,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 03:57:39,011 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 03:57:39,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 03:57:39,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 03:57:39,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 03:57:39,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 03:57:39,233 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 03:57:39,234 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 03:57:39,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/vector-add.wvr.bpl [2022-02-10 03:57:39,235 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/vector-add.wvr.bpl' [2022-02-10 03:57:39,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 03:57:39,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 03:57:39,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 03:57:39,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 03:57:39,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 03:57:39,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/1) ... [2022-02-10 03:57:39,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/1) ... [2022-02-10 03:57:39,291 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 03:57:39,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 03:57:39,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 03:57:39,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 03:57:39,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 03:57:39,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/1) ... [2022-02-10 03:57:39,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/1) ... [2022-02-10 03:57:39,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/1) ... [2022-02-10 03:57:39,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/1) ... [2022-02-10 03:57:39,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/1) ... [2022-02-10 03:57:39,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/1) ... [2022-02-10 03:57:39,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/1) ... [2022-02-10 03:57:39,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 03:57:39,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 03:57:39,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 03:57:39,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 03:57:39,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/1) ... [2022-02-10 03:57:39,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 03:57:39,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:39,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 03:57:39,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 03:57:39,387 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-10 03:57:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 03:57:39,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 03:57:39,388 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-10 03:57:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 03:57:39,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 03:57:39,388 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 03:57:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 03:57:39,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 03:57:39,388 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-10 03:57:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-10 03:57:39,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-10 03:57:39,389 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 03:57:39,440 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 03:57:39,441 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 03:57:39,521 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 03:57:39,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 03:57:39,532 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 03:57:39,533 INFO L202 PluginConnector]: Adding new model vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 03:57:39 BoogieIcfgContainer [2022-02-10 03:57:39,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 03:57:39,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 03:57:39,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 03:57:39,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 03:57:39,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:57:39" (1/2) ... [2022-02-10 03:57:39,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acda3b8 and model type vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 03:57:39, skipping insertion in model container [2022-02-10 03:57:39,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 03:57:39" (2/2) ... [2022-02-10 03:57:39,538 INFO L111 eAbstractionObserver]: Analyzing ICFG vector-add.wvr.bpl [2022-02-10 03:57:39,541 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 03:57:39,541 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 03:57:39,542 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 03:57:39,542 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 03:57:39,564 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-10 03:57:39,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 03:57:39,596 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 [2022-02-10 03:57:39,596 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-10 03:57:39,606 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 30 transitions, 84 flow [2022-02-10 03:57:39,630 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 113 states, 112 states have (on average 2.794642857142857) internal successors, (313), 112 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:43,319 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 336660 transitions and produced 109149 states. [2022-02-10 03:57:43,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 109149 states, 72822 states have (on average 2.1431435555189364) internal successors, (156068), 109148 states have internal predecessors, (156068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 03:57:44,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:44,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:44,109 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:44,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash -230313036, now seen corresponding path program 1 times [2022-02-10 03:57:44,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:44,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681621268] [2022-02-10 03:57:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:44,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:44,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:44,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681621268] [2022-02-10 03:57:44,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681621268] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:57:44,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:57:44,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 03:57:44,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384562649] [2022-02-10 03:57:44,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:57:44,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 03:57:44,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 03:57:44,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 03:57:44,696 INFO L87 Difference]: Start difference. First operand has 109149 states, 72822 states have (on average 2.1431435555189364) internal successors, (156068), 109148 states have internal predecessors, (156068), 0 states have call successors, (0), 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), 3 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) [2022-02-10 03:57:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:47,086 INFO L93 Difference]: Finished difference Result 109145 states and 156064 transitions. [2022-02-10 03:57:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 03:57:47,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 [2022-02-10 03:57:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:47,271 INFO L225 Difference]: With dead ends: 109145 [2022-02-10 03:57:47,271 INFO L226 Difference]: Without dead ends: 30120 [2022-02-10 03:57:47,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 03:57:47,274 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:47,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:57:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30120 states. [2022-02-10 03:57:47,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30120 to 124. [2022-02-10 03:57:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.0) internal successors, (246), 123 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 246 transitions. [2022-02-10 03:57:47,638 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 246 transitions. Word has length 19 [2022-02-10 03:57:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:47,639 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 246 transitions. [2022-02-10 03:57:47,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2022-02-10 03:57:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 246 transitions. [2022-02-10 03:57:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 03:57:47,640 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:47,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:47,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 03:57:47,641 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2108490286, now seen corresponding path program 1 times [2022-02-10 03:57:47,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:47,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650766637] [2022-02-10 03:57:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:47,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:47,679 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:47,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650766637] [2022-02-10 03:57:47,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650766637] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:57:47,680 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:57:47,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:57:47,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804823347] [2022-02-10 03:57:47,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:57:47,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:57:47,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:47,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:57:47,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:57:47,682 INFO L87 Difference]: Start difference. First operand 124 states and 246 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:47,718 INFO L93 Difference]: Finished difference Result 132 states and 254 transitions. [2022-02-10 03:57:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 03:57:47,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 03:57:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:47,719 INFO L225 Difference]: With dead ends: 132 [2022-02-10 03:57:47,719 INFO L226 Difference]: Without dead ends: 132 [2022-02-10 03:57:47,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:57:47,720 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:47,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 16 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:57:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-02-10 03:57:47,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 123. [2022-02-10 03:57:47,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.9754098360655739) internal successors, (241), 122 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 241 transitions. [2022-02-10 03:57:47,725 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 241 transitions. Word has length 21 [2022-02-10 03:57:47,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:47,725 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 241 transitions. [2022-02-10 03:57:47,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 241 transitions. [2022-02-10 03:57:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 03:57:47,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:47,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:47,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 03:57:47,726 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:47,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:47,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1850667822, now seen corresponding path program 1 times [2022-02-10 03:57:47,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:47,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759024218] [2022-02-10 03:57:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:47,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:57:47,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:47,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759024218] [2022-02-10 03:57:47,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759024218] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:57:47,768 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:57:47,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:57:47,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628285605] [2022-02-10 03:57:47,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:57:47,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:57:47,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:47,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:57:47,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:57:47,769 INFO L87 Difference]: Start difference. First operand 123 states and 241 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:47,806 INFO L93 Difference]: Finished difference Result 174 states and 341 transitions. [2022-02-10 03:57:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:57:47,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 03:57:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:47,807 INFO L225 Difference]: With dead ends: 174 [2022-02-10 03:57:47,807 INFO L226 Difference]: Without dead ends: 174 [2022-02-10 03:57:47,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:57:47,808 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 63 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:47,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:57:47,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-02-10 03:57:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 144. [2022-02-10 03:57:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.965034965034965) internal successors, (281), 143 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 281 transitions. [2022-02-10 03:57:47,813 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 281 transitions. Word has length 21 [2022-02-10 03:57:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:47,813 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 281 transitions. [2022-02-10 03:57:47,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 281 transitions. [2022-02-10 03:57:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 03:57:47,814 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:47,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:47,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 03:57:47,814 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:47,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1402226544, now seen corresponding path program 1 times [2022-02-10 03:57:47,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:47,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263650347] [2022-02-10 03:57:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:47,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:48,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:48,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263650347] [2022-02-10 03:57:48,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263650347] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:48,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491170530] [2022-02-10 03:57:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:48,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:48,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:48,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:57:48,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 03:57:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:48,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 03:57:48,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:48,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-02-10 03:57:48,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-02-10 03:57:48,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-02-10 03:57:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:48,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:48,487 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:57:48,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-02-10 03:57:48,498 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:57:48,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-02-10 03:57:49,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-02-10 03:57:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:49,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491170530] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:49,859 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:49,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 03:57:49,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095203772] [2022-02-10 03:57:49,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:49,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 03:57:49,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:49,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 03:57:49,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:57:49,861 INFO L87 Difference]: Start difference. First operand 144 states and 281 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:50,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:50,198 INFO L93 Difference]: Finished difference Result 285 states and 540 transitions. [2022-02-10 03:57:50,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 03:57:50,198 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 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 23 [2022-02-10 03:57:50,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:50,199 INFO L225 Difference]: With dead ends: 285 [2022-02-10 03:57:50,199 INFO L226 Difference]: Without dead ends: 280 [2022-02-10 03:57:50,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:57:50,200 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 254 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:50,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 48 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 230 Invalid, 0 Unknown, 8 Unchecked, 0.2s Time] [2022-02-10 03:57:50,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-02-10 03:57:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 161. [2022-02-10 03:57:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.9375) internal successors, (310), 160 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 310 transitions. [2022-02-10 03:57:50,205 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 310 transitions. Word has length 23 [2022-02-10 03:57:50,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:50,206 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 310 transitions. [2022-02-10 03:57:50,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:50,206 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 310 transitions. [2022-02-10 03:57:50,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 03:57:50,207 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:57:50,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:57:50,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-10 03:57:50,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:50,437 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:57:50,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:57:50,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2011552308, now seen corresponding path program 2 times [2022-02-10 03:57:50,437 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:57:50,437 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503449361] [2022-02-10 03:57:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:57:50,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:57:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:57:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:50,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:57:50,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503449361] [2022-02-10 03:57:50,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503449361] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:57:50,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764891278] [2022-02-10 03:57:50,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:57:50,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:50,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:57:50,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:57:50,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 03:57:50,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:57:50,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:57:50,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 03:57:50,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:57:50,849 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:57:50,849 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2022-02-10 03:57:50,870 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:57:50,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-02-10 03:57:50,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-02-10 03:57:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:51,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:57:51,168 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:57:51,168 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-02-10 03:57:51,175 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:57:51,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-02-10 03:57:53,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-02-10 03:57:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:57:53,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764891278] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:57:53,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:57:53,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2022-02-10 03:57:53,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600533463] [2022-02-10 03:57:53,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:57:53,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 03:57:53,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:57:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 03:57:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=393, Unknown=1, NotChecked=0, Total=462 [2022-02-10 03:57:53,113 INFO L87 Difference]: Start difference. First operand 161 states and 310 transitions. Second operand has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:57:53,680 INFO L93 Difference]: Finished difference Result 337 states and 615 transitions. [2022-02-10 03:57:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 03:57:53,681 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-10 03:57:53,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:57:53,681 INFO L225 Difference]: With dead ends: 337 [2022-02-10 03:57:53,681 INFO L226 Difference]: Without dead ends: 0 [2022-02-10 03:57:53,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=247, Invalid=1084, Unknown=1, NotChecked=0, Total=1332 [2022-02-10 03:57:53,682 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 344 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:57:53,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 89 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 381 Invalid, 0 Unknown, 196 Unchecked, 0.2s Time] [2022-02-10 03:57:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-10 03:57:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-10 03:57:53,683 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) [2022-02-10 03:57:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-10 03:57:53,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2022-02-10 03:57:53,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:57:53,683 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-10 03:57:53,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:57:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-10 03:57:53,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-10 03:57:53,685 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-10 03:57:53,685 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-10 03:57:53,686 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-10 03:57:53,686 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-10 03:57:53,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 03:57:53,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:57:53,897 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-02-10 03:57:53,898 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 03:57:53,898 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 03:57:53,901 INFO L202 PluginConnector]: Adding new model vector-add.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 03:57:53 BasicIcfg [2022-02-10 03:57:53,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 03:57:53,901 INFO L158 Benchmark]: Toolchain (without parser) took 14635.13ms. Allocated memory was 216.0MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 180.1MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 522.2MB. Max. memory is 8.0GB. [2022-02-10 03:57:53,901 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 216.0MB. Free memory was 181.3MB in the beginning and 181.3MB in the end (delta: 72.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 03:57:53,902 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.06ms. Allocated memory is still 216.0MB. Free memory was 180.0MB in the beginning and 178.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 03:57:53,902 INFO L158 Benchmark]: Boogie Preprocessor took 18.32ms. Allocated memory is still 216.0MB. Free memory was 178.5MB in the beginning and 177.6MB in the end (delta: 936.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 03:57:53,902 INFO L158 Benchmark]: RCFGBuilder took 220.54ms. Allocated memory is still 216.0MB. Free memory was 177.5MB in the beginning and 168.1MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-10 03:57:53,902 INFO L158 Benchmark]: TraceAbstraction took 14366.31ms. Allocated memory was 216.0MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 167.6MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 509.6MB. Max. memory is 8.0GB. [2022-02-10 03:57:53,903 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 216.0MB. Free memory was 181.3MB in the beginning and 181.3MB in the end (delta: 72.5kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.06ms. Allocated memory is still 216.0MB. Free memory was 180.0MB in the beginning and 178.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.32ms. Allocated memory is still 216.0MB. Free memory was 178.5MB in the beginning and 177.6MB in the end (delta: 936.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 220.54ms. Allocated memory is still 216.0MB. Free memory was 177.5MB in the beginning and 168.1MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 14366.31ms. Allocated memory was 216.0MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 167.6MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 509.6MB. 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: 67]: 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, 43 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 14.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.8s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, PartialOrderReductionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 697 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 697 mSDsluCounter, 198 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 204 IncrementalHoareTripleChecker+Unchecked, 236 mSDsCounter, 110 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 686 IncrementalHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 110 mSolverCounterUnsat, 53 mSDtfsCounter, 686 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109149occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 30154 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 190 ConstructedInterpolants, 18 QuantifiedInterpolants, 2020 SizeOfPredicates, 26 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 2/14 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! [2022-02-10 03:57:53,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...