/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/simpl-str-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 02:50:17,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 02:50:17,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 02:50:17,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 02:50:17,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-09 02:50:17,666 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 02:50:17,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 02:50:17,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 02:50:17,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 02:50:17,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 02:50:17,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 02:50:17,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 02:50:17,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 02:50:17,667 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 02:50:17,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 02:50:17,667 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 02:50:17,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 02:50:17,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 02:50:17,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 02:50:17,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 02:50:17,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 02:50:17,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 02:50:17,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 02:50:17,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 02:50:17,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 02:50:17,669 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 02:50:17,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 02:50:17,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 02:50:17,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 02:50:17,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 02:50:17,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 02:50:17,874 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 02:50:17,877 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 02:50:17,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/simpl-str-trans.wvr.bpl [2022-02-09 02:50:17,878 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/simpl-str-trans.wvr.bpl' [2022-02-09 02:50:17,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 02:50:17,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 02:50:17,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 02:50:17,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 02:50:17,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 02:50:17,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/1) ... [2022-02-09 02:50:17,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/1) ... [2022-02-09 02:50:17,917 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 02:50:17,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 02:50:17,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 02:50:17,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 02:50:17,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 02:50:17,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/1) ... [2022-02-09 02:50:17,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/1) ... [2022-02-09 02:50:17,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/1) ... [2022-02-09 02:50:17,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/1) ... [2022-02-09 02:50:17,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/1) ... [2022-02-09 02:50:17,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/1) ... [2022-02-09 02:50:17,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/1) ... [2022-02-09 02:50:17,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 02:50:17,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 02:50:17,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 02:50:17,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 02:50:17,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/1) ... [2022-02-09 02:50:17,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 02:50:17,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 02:50:17,956 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) [2022-02-09 02:50:17,963 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 [2022-02-09 02:50:17,986 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-09 02:50:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-09 02:50:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-09 02:50:17,987 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-09 02:50:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-09 02:50:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-09 02:50:17,987 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-09 02:50:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 02:50:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 02:50:17,987 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-09 02:50:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-09 02:50:17,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-09 02:50:17,988 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 02:50:18,020 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 02:50:18,021 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 02:50:18,097 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 02:50:18,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 02:50:18,103 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 02:50:18,106 INFO L202 PluginConnector]: Adding new model simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:50:18 BoogieIcfgContainer [2022-02-09 02:50:18,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 02:50:18,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 02:50:18,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 02:50:18,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 02:50:18,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:50:17" (1/2) ... [2022-02-09 02:50:18,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469a07e3 and model type simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 02:50:18, skipping insertion in model container [2022-02-09 02:50:18,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:50:18" (2/2) ... [2022-02-09 02:50:18,112 INFO L111 eAbstractionObserver]: Analyzing ICFG simpl-str-trans.wvr.bpl [2022-02-09 02:50:18,127 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 02:50:18,127 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 02:50:18,127 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 02:50:18,127 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 02:50:18,172 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-09 02:50:18,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 02:50:18,216 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 [2022-02-09 02:50:18,216 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-09 02:50:18,224 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 62 flow [2022-02-09 02:50:18,246 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) [2022-02-09 02:50:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 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) [2022-02-09 02:50:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-09 02:50:18,253 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:50:18,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:50:18,254 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:50:18,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:50:18,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1166046105, now seen corresponding path program 1 times [2022-02-09 02:50:18,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:50:18,265 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032413121] [2022-02-09 02:50:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:50:18,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:50:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:50:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:50:18,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:50:18,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032413121] [2022-02-09 02:50:18,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032413121] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:50:18,649 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:50:18,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-09 02:50:18,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034994334] [2022-02-09 02:50:18,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:50:18,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-09 02:50:18,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:50:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-09 02:50:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-09 02:50:18,686 INFO L87 Difference]: Start difference. First operand 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) 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) [2022-02-09 02:50:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:50:18,890 INFO L93 Difference]: Finished difference Result 98 states and 183 transitions. [2022-02-09 02:50:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 02:50:18,892 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 [2022-02-09 02:50:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:50:18,899 INFO L225 Difference]: With dead ends: 98 [2022-02-09 02:50:18,899 INFO L226 Difference]: Without dead ends: 72 [2022-02-09 02:50:18,902 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 [2022-02-09 02:50:18,907 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 02:50:18,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 29 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 02:50:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-09 02:50:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2022-02-09 02:50:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.9444444444444444) internal successors, (105), 54 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:50:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 105 transitions. [2022-02-09 02:50:18,943 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 105 transitions. Word has length 14 [2022-02-09 02:50:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:50:18,943 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 105 transitions. [2022-02-09 02:50:18,944 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) [2022-02-09 02:50:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 105 transitions. [2022-02-09 02:50:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-09 02:50:18,944 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:50:18,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:50:18,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 02:50:18,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:50:18,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:50:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1802957415, now seen corresponding path program 2 times [2022-02-09 02:50:18,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:50:18,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278880149] [2022-02-09 02:50:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:50:18,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:50:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:50:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:50:19,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:50:19,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278880149] [2022-02-09 02:50:19,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278880149] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:50:19,063 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:50:19,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-09 02:50:19,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315697499] [2022-02-09 02:50:19,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:50:19,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-09 02:50:19,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:50:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-09 02:50:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-09 02:50:19,066 INFO L87 Difference]: Start difference. First operand 55 states and 105 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) [2022-02-09 02:50:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:50:19,198 INFO L93 Difference]: Finished difference Result 93 states and 168 transitions. [2022-02-09 02:50:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 02:50:19,199 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 [2022-02-09 02:50:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:50:19,200 INFO L225 Difference]: With dead ends: 93 [2022-02-09 02:50:19,200 INFO L226 Difference]: Without dead ends: 65 [2022-02-09 02:50:19,200 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 [2022-02-09 02:50:19,201 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:50:19,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 29 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:50:19,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-09 02:50:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2022-02-09 02:50:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:50:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 91 transitions. [2022-02-09 02:50:19,213 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 91 transitions. Word has length 14 [2022-02-09 02:50:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:50:19,213 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 91 transitions. [2022-02-09 02:50:19,213 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) [2022-02-09 02:50:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 91 transitions. [2022-02-09 02:50:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-09 02:50:19,214 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:50:19,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:50:19,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 02:50:19,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:50:19,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:50:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2138675609, now seen corresponding path program 3 times [2022-02-09 02:50:19,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:50:19,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25520267] [2022-02-09 02:50:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:50:19,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:50:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:50:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:50:19,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:50:19,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25520267] [2022-02-09 02:50:19,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25520267] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:50:19,348 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:50:19,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-09 02:50:19,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480769642] [2022-02-09 02:50:19,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:50:19,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-09 02:50:19,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:50:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-09 02:50:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-09 02:50:19,356 INFO L87 Difference]: Start difference. First operand 48 states and 91 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) [2022-02-09 02:50:19,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:50:19,498 INFO L93 Difference]: Finished difference Result 80 states and 141 transitions. [2022-02-09 02:50:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 02:50:19,498 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 [2022-02-09 02:50:19,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:50:19,499 INFO L225 Difference]: With dead ends: 80 [2022-02-09 02:50:19,499 INFO L226 Difference]: Without dead ends: 54 [2022-02-09 02:50:19,499 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 [2022-02-09 02:50:19,500 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:50:19,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 26 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:50:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-09 02:50:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2022-02-09 02:50:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:50:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 64 transitions. [2022-02-09 02:50:19,504 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 64 transitions. Word has length 14 [2022-02-09 02:50:19,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:50:19,504 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 64 transitions. [2022-02-09 02:50:19,504 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) [2022-02-09 02:50:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 64 transitions. [2022-02-09 02:50:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-09 02:50:19,505 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:50:19,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:50:19,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-09 02:50:19,505 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:50:19,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:50:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1206578363, now seen corresponding path program 4 times [2022-02-09 02:50:19,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:50:19,506 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103489581] [2022-02-09 02:50:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:50:19,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:50:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:50:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:50:19,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:50:19,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103489581] [2022-02-09 02:50:19,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103489581] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:50:19,622 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:50:19,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-09 02:50:19,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576622708] [2022-02-09 02:50:19,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:50:19,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-09 02:50:19,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:50:19,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-09 02:50:19,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-09 02:50:19,624 INFO L87 Difference]: Start difference. First operand 37 states and 64 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) [2022-02-09 02:50:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:50:19,703 INFO L93 Difference]: Finished difference Result 56 states and 96 transitions. [2022-02-09 02:50:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 02:50:19,703 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 [2022-02-09 02:50:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:50:19,704 INFO L225 Difference]: With dead ends: 56 [2022-02-09 02:50:19,704 INFO L226 Difference]: Without dead ends: 33 [2022-02-09 02:50:19,704 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 [2022-02-09 02:50:19,705 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:50:19,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 27 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:50:19,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-09 02:50:19,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-09 02:50:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:50:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 56 transitions. [2022-02-09 02:50:19,708 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 56 transitions. Word has length 14 [2022-02-09 02:50:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:50:19,708 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 56 transitions. [2022-02-09 02:50:19,708 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) [2022-02-09 02:50:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2022-02-09 02:50:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-09 02:50:19,709 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:50:19,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:50:19,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-09 02:50:19,709 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:50:19,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:50:19,710 INFO L85 PathProgramCache]: Analyzing trace with hash 531109563, now seen corresponding path program 5 times [2022-02-09 02:50:19,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:50:19,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769162950] [2022-02-09 02:50:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:50:19,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:50:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:50:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:50:19,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:50:19,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769162950] [2022-02-09 02:50:19,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769162950] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:50:19,792 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:50:19,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-09 02:50:19,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163593794] [2022-02-09 02:50:19,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:50:19,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-09 02:50:19,793 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:50:19,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-09 02:50:19,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-09 02:50:19,795 INFO L87 Difference]: Start difference. First operand 33 states and 56 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) [2022-02-09 02:50:19,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:50:19,860 INFO L93 Difference]: Finished difference Result 48 states and 80 transitions. [2022-02-09 02:50:19,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 02:50:19,860 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 [2022-02-09 02:50:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:50:19,861 INFO L225 Difference]: With dead ends: 48 [2022-02-09 02:50:19,862 INFO L226 Difference]: Without dead ends: 27 [2022-02-09 02:50:19,862 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 [2022-02-09 02:50:19,872 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:50:19,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 17 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:50:19,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-09 02:50:19,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-09 02:50:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:50:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2022-02-09 02:50:19,878 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 41 transitions. Word has length 14 [2022-02-09 02:50:19,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:50:19,878 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 41 transitions. [2022-02-09 02:50:19,878 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) [2022-02-09 02:50:19,878 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2022-02-09 02:50:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-09 02:50:19,879 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:50:19,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:50:19,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-09 02:50:19,879 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 02:50:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:50:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash 202726681, now seen corresponding path program 6 times [2022-02-09 02:50:19,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:50:19,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056876294] [2022-02-09 02:50:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:50:19,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:50:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:50:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:50:19,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:50:19,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056876294] [2022-02-09 02:50:19,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056876294] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:50:19,996 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:50:19,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-09 02:50:19,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523464450] [2022-02-09 02:50:19,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:50:19,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-09 02:50:19,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:50:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-09 02:50:19,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-09 02:50:19,997 INFO L87 Difference]: Start difference. First operand 27 states and 41 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) [2022-02-09 02:50:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:50:20,074 INFO L93 Difference]: Finished difference Result 25 states and 39 transitions. [2022-02-09 02:50:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 02:50:20,075 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 [2022-02-09 02:50:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:50:20,075 INFO L225 Difference]: With dead ends: 25 [2022-02-09 02:50:20,075 INFO L226 Difference]: Without dead ends: 0 [2022-02-09 02:50:20,075 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 [2022-02-09 02:50:20,077 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11 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 [2022-02-09 02:50:20,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 11 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:50:20,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-09 02:50:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-09 02:50:20,078 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) [2022-02-09 02:50:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-09 02:50:20,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-02-09 02:50:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:50:20,078 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-09 02:50:20,079 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) [2022-02-09 02:50:20,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-09 02:50:20,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-09 02:50:20,081 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-09 02:50:20,081 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-09 02:50:20,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-09 02:50:20,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-09 02:50:20,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-09 02:50:20,085 INFO L732 BasicCegarLoop]: Path program histogram: [6] [2022-02-09 02:50:20,086 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 02:50:20,086 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 02:50:20,090 INFO L202 PluginConnector]: Adding new model simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 02:50:20 BasicIcfg [2022-02-09 02:50:20,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 02:50:20,090 INFO L158 Benchmark]: Toolchain (without parser) took 2190.85ms. Allocated memory was 208.7MB in the beginning and 272.6MB in the end (delta: 64.0MB). Free memory was 174.5MB in the beginning and 151.4MB in the end (delta: 23.0MB). Peak memory consumption was 86.4MB. Max. memory is 8.0GB. [2022-02-09 02:50:20,091 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 208.7MB. Free memory was 175.6MB in the beginning and 175.4MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 02:50:20,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.82ms. Allocated memory is still 208.7MB. Free memory was 174.3MB in the beginning and 172.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 02:50:20,091 INFO L158 Benchmark]: Boogie Preprocessor took 11.05ms. Allocated memory is still 208.7MB. Free memory was 172.9MB in the beginning and 171.9MB in the end (delta: 959.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 02:50:20,091 INFO L158 Benchmark]: RCFGBuilder took 175.61ms. Allocated memory is still 208.7MB. Free memory was 171.9MB in the beginning and 163.3MB in the end (delta: 8.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-09 02:50:20,091 INFO L158 Benchmark]: TraceAbstraction took 1982.72ms. Allocated memory was 208.7MB in the beginning and 272.6MB in the end (delta: 64.0MB). Free memory was 162.7MB in the beginning and 151.4MB in the end (delta: 11.3MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. [2022-02-09 02:50:20,093 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 208.7MB. Free memory was 175.6MB in the beginning and 175.4MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.82ms. Allocated memory is still 208.7MB. Free memory was 174.3MB in the beginning and 172.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.05ms. Allocated memory is still 208.7MB. Free memory was 172.9MB in the beginning and 171.9MB in the end (delta: 959.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 175.61ms. Allocated memory is still 208.7MB. Free memory was 171.9MB in the beginning and 163.3MB in the end (delta: 8.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1982.72ms. Allocated memory was 208.7MB in the beginning and 272.6MB in the end (delta: 64.0MB). Free memory was 162.7MB in the beginning and 151.4MB in the end (delta: 11.3MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 47]: 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: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 147 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 139 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 177 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 237 IncrementalHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 65 mSDtfsCounter, 237 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, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 51 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, 1539 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! [2022-02-09 02:50:20,130 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...