/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:56:33,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:56:33,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:56:33,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 17:56:33,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 17:56:33,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 17:56:33,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 17:56:33,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 17:56:33,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 17:56:33,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 17:56:33,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 17:56:33,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 17:56:33,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:56:33,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:56:33,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:56:33,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:56:33,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:56:33,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:56:33,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:56:33,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:56:33,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:56:33,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:56:33,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:56:33,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:56:33,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 17:56:33,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:56:34,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:56:34,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:56:34,001 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-Delay.epf [2021-08-21 17:56:34,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:56:34,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:56:34,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:56:34,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:56:34,022 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:56:34,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:56:34,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:56:34,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:56:34,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:56:34,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:56:34,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:56:34,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:56:34,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:56:34,024 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:56:34,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:56:34,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:56:34,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:56:34,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:56:34,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:56:34,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:56:34,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:56:34,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:56:34,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:56:34,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:56:34,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:56:34,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:56:34,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:56:34,027 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:56:34,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:56:34,028 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:56:34,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:56:34,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:56:34,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:56:34,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:56:34,334 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 17:56:34,335 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 17:56:34,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl [2021-08-21 17:56:34,340 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl' [2021-08-21 17:56:34,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:56:34,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 17:56:34,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:56:34,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:56:34,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:56:34,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/1) ... [2021-08-21 17:56:34,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/1) ... [2021-08-21 17:56:34,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:56:34,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:56:34,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:56:34,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:56:34,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/1) ... [2021-08-21 17:56:34,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/1) ... [2021-08-21 17:56:34,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/1) ... [2021-08-21 17:56:34,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/1) ... [2021-08-21 17:56:34,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/1) ... [2021-08-21 17:56:34,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/1) ... [2021-08-21 17:56:34,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/1) ... [2021-08-21 17:56:34,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:56:34,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:56:34,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:56:34,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:56:34,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/1) ... [2021-08-21 17:56:34,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:56:34,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:56:34,458 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) [2021-08-21 17:56:34,476 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 [2021-08-21 17:56:34,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-21 17:56:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-21 17:56:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-21 17:56:34,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-21 17:56:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-21 17:56:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-21 17:56:34,497 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 17:56:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:56:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:56:34,497 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-21 17:56:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-21 17:56:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-21 17:56:34,498 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 17:56:34,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:56:34,698 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-21 17:56:34,699 INFO L202 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:56:34 BoogieIcfgContainer [2021-08-21 17:56:34,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:56:34,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:56:34,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:56:34,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:56:34,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:56:34" (1/2) ... [2021-08-21 17:56:34,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63002fc2 and model type misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:56:34, skipping insertion in model container [2021-08-21 17:56:34,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:56:34" (2/2) ... [2021-08-21 17:56:34,706 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-4.wvr.bpl [2021-08-21 17:56:34,710 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:56:34,710 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:56:34,710 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:56:34,710 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:56:34,765 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-21 17:56:34,798 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:56:34,804 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 17:56:34,804 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 17:56:35,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 160 states have (on average 2.35) internal successors, (376), 230 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-21 17:56:35,042 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:56:35,043 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:56:35,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:56:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:56:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1492708754, now seen corresponding path program 1 times [2021-08-21 17:56:35,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:56:35,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891621491] [2021-08-21 17:56:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:35,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:56:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:35,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:56:35,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891621491] [2021-08-21 17:56:35,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891621491] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:56:35,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:56:35,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 17:56:35,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181867494] [2021-08-21 17:56:35,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-21 17:56:35,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:56:35,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-21 17:56:35,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 17:56:35,193 INFO L87 Difference]: Start difference. First operand has 231 states, 160 states have (on average 2.35) internal successors, (376), 230 states have internal predecessors, (376), 0 states have call successors, (0), 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 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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) [2021-08-21 17:56:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:56:35,252 INFO L93 Difference]: Finished difference Result 378 states and 625 transitions. [2021-08-21 17:56:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-21 17:56:35,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 [2021-08-21 17:56:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:56:35,262 INFO L225 Difference]: With dead ends: 378 [2021-08-21 17:56:35,263 INFO L226 Difference]: Without dead ends: 166 [2021-08-21 17:56:35,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-21 17:56:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-21 17:56:35,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 156. [2021-08-21 17:56:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.793548387096774) internal successors, (278), 155 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 278 transitions. [2021-08-21 17:56:35,303 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 278 transitions. Word has length 14 [2021-08-21 17:56:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:56:35,303 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 278 transitions. [2021-08-21 17:56:35,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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) [2021-08-21 17:56:35,304 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 278 transitions. [2021-08-21 17:56:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-21 17:56:35,306 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:56:35,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:56:35,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:56:35,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:56:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:56:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1603674390, now seen corresponding path program 1 times [2021-08-21 17:56:35,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:56:35,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723726716] [2021-08-21 17:56:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:35,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:56:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:35,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:56:35,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723726716] [2021-08-21 17:56:35,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723726716] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:56:35,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:56:35,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 17:56:35,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489429894] [2021-08-21 17:56:35,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 17:56:35,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:56:35,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 17:56:35,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:56:35,331 INFO L87 Difference]: Start difference. First operand 156 states and 278 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:56:35,340 INFO L93 Difference]: Finished difference Result 247 states and 435 transitions. [2021-08-21 17:56:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 17:56:35,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-21 17:56:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:56:35,343 INFO L225 Difference]: With dead ends: 247 [2021-08-21 17:56:35,343 INFO L226 Difference]: Without dead ends: 247 [2021-08-21 17:56:35,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:56:35,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-08-21 17:56:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 203. [2021-08-21 17:56:35,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.7871287128712872) internal successors, (361), 202 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 361 transitions. [2021-08-21 17:56:35,359 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 361 transitions. Word has length 18 [2021-08-21 17:56:35,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:56:35,359 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 361 transitions. [2021-08-21 17:56:35,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,359 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 361 transitions. [2021-08-21 17:56:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-21 17:56:35,361 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:56:35,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:56:35,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:56:35,361 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:56:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:56:35,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1221219094, now seen corresponding path program 1 times [2021-08-21 17:56:35,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:56:35,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360239515] [2021-08-21 17:56:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:35,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:56:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:35,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:56:35,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360239515] [2021-08-21 17:56:35,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360239515] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:56:35,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:56:35,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 17:56:35,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395234895] [2021-08-21 17:56:35,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 17:56:35,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:56:35,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 17:56:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:56:35,389 INFO L87 Difference]: Start difference. First operand 203 states and 361 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:56:35,397 INFO L93 Difference]: Finished difference Result 304 states and 538 transitions. [2021-08-21 17:56:35,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 17:56:35,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-21 17:56:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:56:35,400 INFO L225 Difference]: With dead ends: 304 [2021-08-21 17:56:35,400 INFO L226 Difference]: Without dead ends: 304 [2021-08-21 17:56:35,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:56:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-08-21 17:56:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 256. [2021-08-21 17:56:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.807843137254902) internal successors, (461), 255 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 461 transitions. [2021-08-21 17:56:35,422 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 461 transitions. Word has length 18 [2021-08-21 17:56:35,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:56:35,423 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 461 transitions. [2021-08-21 17:56:35,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,423 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 461 transitions. [2021-08-21 17:56:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-21 17:56:35,425 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:56:35,425 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:56:35,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:56:35,425 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:56:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:56:35,426 INFO L82 PathProgramCache]: Analyzing trace with hash 325693114, now seen corresponding path program 1 times [2021-08-21 17:56:35,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:56:35,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808794239] [2021-08-21 17:56:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:35,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:56:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:35,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:56:35,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808794239] [2021-08-21 17:56:35,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808794239] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 17:56:35,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192684917] [2021-08-21 17:56:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:35,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 17:56:35,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:56:35,521 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) [2021-08-21 17:56:35,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-21 17:56:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:35,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-21 17:56:35,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 17:56:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:35,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192684917] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 17:56:35,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 17:56:35,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-21 17:56:35,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027233880] [2021-08-21 17:56:35,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 17:56:35,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:56:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 17:56:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-21 17:56:35,771 INFO L87 Difference]: Start difference. First operand 256 states and 461 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:56:35,838 INFO L93 Difference]: Finished difference Result 484 states and 899 transitions. [2021-08-21 17:56:35,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 17:56:35,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-21 17:56:35,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:56:35,841 INFO L225 Difference]: With dead ends: 484 [2021-08-21 17:56:35,841 INFO L226 Difference]: Without dead ends: 409 [2021-08-21 17:56:35,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:56:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-08-21 17:56:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 282. [2021-08-21 17:56:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.8291814946619218) internal successors, (514), 281 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 514 transitions. [2021-08-21 17:56:35,854 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 514 transitions. Word has length 22 [2021-08-21 17:56:35,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:56:35,855 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 514 transitions. [2021-08-21 17:56:35,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 514 transitions. [2021-08-21 17:56:35,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-21 17:56:35,856 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:56:35,856 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:56:35,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-21 17:56:36,084 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 [2021-08-21 17:56:36,084 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:56:36,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:56:36,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1281989306, now seen corresponding path program 1 times [2021-08-21 17:56:36,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:56:36,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338182509] [2021-08-21 17:56:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:36,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:56:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:36,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:56:36,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338182509] [2021-08-21 17:56:36,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338182509] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 17:56:36,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950185681] [2021-08-21 17:56:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:36,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 17:56:36,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:56:36,133 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) [2021-08-21 17:56:36,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-21 17:56:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:36,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-21 17:56:36,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 17:56:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:36,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950185681] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 17:56:36,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 17:56:36,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-21 17:56:36,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284445131] [2021-08-21 17:56:36,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 17:56:36,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:56:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 17:56:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-21 17:56:36,292 INFO L87 Difference]: Start difference. First operand 282 states and 514 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:36,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:56:36,368 INFO L93 Difference]: Finished difference Result 617 states and 1126 transitions. [2021-08-21 17:56:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 17:56:36,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-21 17:56:36,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:56:36,372 INFO L225 Difference]: With dead ends: 617 [2021-08-21 17:56:36,373 INFO L226 Difference]: Without dead ends: 539 [2021-08-21 17:56:36,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:56:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-08-21 17:56:36,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 486. [2021-08-21 17:56:36,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 1.7608247422680412) internal successors, (854), 485 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 854 transitions. [2021-08-21 17:56:36,394 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 854 transitions. Word has length 22 [2021-08-21 17:56:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:56:36,394 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 854 transitions. [2021-08-21 17:56:36,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 854 transitions. [2021-08-21 17:56:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-21 17:56:36,396 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:56:36,396 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:56:36,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-21 17:56:36,620 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 [2021-08-21 17:56:36,621 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:56:36,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:56:36,621 INFO L82 PathProgramCache]: Analyzing trace with hash 66195006, now seen corresponding path program 2 times [2021-08-21 17:56:36,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:56:36,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463871695] [2021-08-21 17:56:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:36,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:56:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-21 17:56:36,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:56:36,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463871695] [2021-08-21 17:56:36,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463871695] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 17:56:36,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389802436] [2021-08-21 17:56:36,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 17:56:36,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 17:56:36,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:56:36,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 17:56:36,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-21 17:56:36,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 17:56:36,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 17:56:36,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-21 17:56:36,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 17:56:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-21 17:56:36,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389802436] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:56:36,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-21 17:56:36,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 4 [2021-08-21 17:56:36,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302908575] [2021-08-21 17:56:36,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-21 17:56:36,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:56:36,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-21 17:56:36,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 17:56:36,819 INFO L87 Difference]: Start difference. First operand 486 states and 854 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:56:36,832 INFO L93 Difference]: Finished difference Result 629 states and 1041 transitions. [2021-08-21 17:56:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-21 17:56:36,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 26 [2021-08-21 17:56:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:56:36,835 INFO L225 Difference]: With dead ends: 629 [2021-08-21 17:56:36,835 INFO L226 Difference]: Without dead ends: 629 [2021-08-21 17:56:36,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 17:56:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-08-21 17:56:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 512. [2021-08-21 17:56:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.649706457925636) internal successors, (843), 511 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 843 transitions. [2021-08-21 17:56:36,848 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 843 transitions. Word has length 26 [2021-08-21 17:56:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:56:36,848 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 843 transitions. [2021-08-21 17:56:36,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 843 transitions. [2021-08-21 17:56:36,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-21 17:56:36,850 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:56:36,850 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:56:36,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-21 17:56:37,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 17:56:37,073 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:56:37,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:56:37,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1940902850, now seen corresponding path program 2 times [2021-08-21 17:56:37,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:56:37,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496207689] [2021-08-21 17:56:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:37,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:56:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-21 17:56:37,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:56:37,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496207689] [2021-08-21 17:56:37,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496207689] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:56:37,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:56:37,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-21 17:56:37,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487476079] [2021-08-21 17:56:37,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-21 17:56:37,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:56:37,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-21 17:56:37,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 17:56:37,100 INFO L87 Difference]: Start difference. First operand 512 states and 843 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:56:37,113 INFO L93 Difference]: Finished difference Result 613 states and 921 transitions. [2021-08-21 17:56:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-21 17:56:37,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 26 [2021-08-21 17:56:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:56:37,116 INFO L225 Difference]: With dead ends: 613 [2021-08-21 17:56:37,116 INFO L226 Difference]: Without dead ends: 613 [2021-08-21 17:56:37,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 17:56:37,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-08-21 17:56:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 504. [2021-08-21 17:56:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.5347912524850895) internal successors, (772), 503 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 772 transitions. [2021-08-21 17:56:37,127 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 772 transitions. Word has length 26 [2021-08-21 17:56:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:56:37,128 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 772 transitions. [2021-08-21 17:56:37,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 772 transitions. [2021-08-21 17:56:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-21 17:56:37,129 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:56:37,129 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:56:37,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:56:37,130 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:56:37,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:56:37,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1497019362, now seen corresponding path program 1 times [2021-08-21 17:56:37,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:56:37,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851922746] [2021-08-21 17:56:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:37,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:56:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:37,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:56:37,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851922746] [2021-08-21 17:56:37,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851922746] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 17:56:37,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749842202] [2021-08-21 17:56:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:37,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 17:56:37,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:56:37,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 17:56:37,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-21 17:56:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:37,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-21 17:56:37,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 17:56:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:37,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749842202] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 17:56:37,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 17:56:37,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-21 17:56:37,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503746154] [2021-08-21 17:56:37,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:56:37,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:56:37,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:56:37,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:56:37,430 INFO L87 Difference]: Start difference. First operand 504 states and 772 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:56:37,524 INFO L93 Difference]: Finished difference Result 804 states and 1276 transitions. [2021-08-21 17:56:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 17:56:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-08-21 17:56:37,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:56:37,527 INFO L225 Difference]: With dead ends: 804 [2021-08-21 17:56:37,527 INFO L226 Difference]: Without dead ends: 720 [2021-08-21 17:56:37,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:56:37,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-08-21 17:56:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 359. [2021-08-21 17:56:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.5726256983240223) internal successors, (563), 358 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 563 transitions. [2021-08-21 17:56:37,536 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 563 transitions. Word has length 30 [2021-08-21 17:56:37,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:56:37,537 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 563 transitions. [2021-08-21 17:56:37,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 563 transitions. [2021-08-21 17:56:37,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-21 17:56:37,538 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:56:37,538 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:56:37,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-21 17:56:37,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 17:56:37,753 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:56:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:56:37,753 INFO L82 PathProgramCache]: Analyzing trace with hash 81179154, now seen corresponding path program 2 times [2021-08-21 17:56:37,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:56:37,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571608474] [2021-08-21 17:56:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:37,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:56:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:37,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:56:37,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571608474] [2021-08-21 17:56:37,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571608474] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 17:56:37,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204499866] [2021-08-21 17:56:37,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 17:56:37,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 17:56:37,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:56:37,809 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 17:56:37,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-21 17:56:37,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 17:56:37,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 17:56:37,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-21 17:56:37,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 17:56:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:38,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204499866] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 17:56:38,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 17:56:38,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-21 17:56:38,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116263071] [2021-08-21 17:56:38,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:56:38,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:56:38,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:56:38,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:56:38,003 INFO L87 Difference]: Start difference. First operand 359 states and 563 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:56:38,100 INFO L93 Difference]: Finished difference Result 354 states and 542 transitions. [2021-08-21 17:56:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 17:56:38,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-08-21 17:56:38,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:56:38,101 INFO L225 Difference]: With dead ends: 354 [2021-08-21 17:56:38,101 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:56:38,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:56:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:56:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:56:38,101 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) [2021-08-21 17:56:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:56:38,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-08-21 17:56:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:56:38,102 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:56:38,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:56:38,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:56:38,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:56:38,104 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 17:56:38,104 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:56:38,105 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:56:38,105 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:56:38,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-21 17:56:38,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 17:56:38,334 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:56:38,334 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:56:38,335 INFO L202 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:56:38 BasicIcfg [2021-08-21 17:56:38,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:56:38,336 INFO L168 Benchmark]: Toolchain (without parser) took 3965.37 ms. Allocated memory was 127.9 MB in the beginning and 231.7 MB in the end (delta: 103.8 MB). Free memory was 107.7 MB in the beginning and 205.0 MB in the end (delta: -97.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2021-08-21 17:56:38,337 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.53 ms. Allocated memory is still 127.9 MB. Free memory is still 108.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:56:38,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.33 ms. Allocated memory is still 127.9 MB. Free memory was 107.4 MB in the beginning and 106.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:56:38,337 INFO L168 Benchmark]: Boogie Preprocessor took 16.47 ms. Allocated memory is still 127.9 MB. Free memory was 106.0 MB in the beginning and 105.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:56:38,337 INFO L168 Benchmark]: RCFGBuilder took 272.92 ms. Allocated memory is still 127.9 MB. Free memory was 105.0 MB in the beginning and 94.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-08-21 17:56:38,338 INFO L168 Benchmark]: TraceAbstraction took 3634.48 ms. Allocated memory was 127.9 MB in the beginning and 231.7 MB in the end (delta: 103.8 MB). Free memory was 93.8 MB in the beginning and 205.0 MB in the end (delta: -111.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:56:38,338 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 0.53 ms. Allocated memory is still 127.9 MB. Free memory is still 108.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.33 ms. Allocated memory is still 127.9 MB. Free memory was 107.4 MB in the beginning and 106.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.47 ms. Allocated memory is still 127.9 MB. Free memory was 106.0 MB in the beginning and 105.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 272.92 ms. Allocated memory is still 127.9 MB. Free memory was 105.0 MB in the beginning and 94.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3634.48 ms. Allocated memory was 127.9 MB in the beginning and 231.7 MB in the end (delta: 103.8 MB). Free memory was 93.8 MB in the beginning and 205.0 MB in the end (delta: -111.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 590, positive: 472, positive conditional: 472, positive unconditional: 0, negative: 118, negative conditional: 118, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 528, positive: 472, positive conditional: 0, positive unconditional: 472, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 133, positive: 125, positive conditional: 0, positive unconditional: 125, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 133, positive: 121, positive conditional: 0, positive unconditional: 121, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 57, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 528, positive: 347, positive conditional: 0, positive unconditional: 347, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 133, unknown conditional: 0, unknown unconditional: 133] , Statistics on independence cache: Total cache size (in pairs): 133, Positive cache size: 125, Positive conditional cache size: 0, Positive unconditional cache size: 125, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Independence queries for same thread: 62 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 62]: 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, 48 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3536.4ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 23.6ms, AutomataDifference: 501.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 225.4ms, PartialOrderReductionTime: 212.5ms, HoareTripleCheckerStatistics: 248 SDtfs, 317 SDslu, 326 SDs, 0 SdLazy, 187 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 184.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 181.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=512occurred in iteration=6, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 130.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 869 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.1ms SsaConstructionTime, 128.6ms SatisfiabilityAnalysisTime, 925.9ms InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 322 ConstructedInterpolants, 0 QuantifiedInterpolants, 594 SizeOfPredicates, 4 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 74/101 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! [2021-08-21 17:56:38,369 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...