/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/test/easy6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 20:46:27,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 20:46:27,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 20:46:27,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 20:46:27,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-06 20:46:27,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-06 20:46:27,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-06 20:46:27,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-06 20:46:27,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-06 20:46:27,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-06 20:46:27,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-06 20:46:27,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-06 20:46:27,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-06 20:46:27,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-06 20:46:27,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-06 20:46:27,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-06 20:46:27,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-06 20:46:27,235 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 [2021-08-06 20:46:27,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 20:46:27,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 20:46:27,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 20:46:27,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 20:46:27,265 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 20:46:27,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 20:46:27,266 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 20:46:27,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 20:46:27,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 20:46:27,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 20:46:27,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 20:46:27,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 20:46:27,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 20:46:27,267 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 20:46:27,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 20:46:27,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 20:46:27,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 20:46:27,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 20:46:27,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 20:46:27,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 20:46:27,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 20:46:27,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 20:46:27,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 20:46:27,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 20:46:27,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 20:46:27,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 20:46:27,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 20:46:27,268 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 20:46:27,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 20:46:27,269 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 20:46:27,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 20:46:27,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 20:46:27,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 20:46:27,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 20:46:27,536 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-06 20:46:27,541 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-06 20:46:27,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl [2021-08-06 20:46:27,542 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl' [2021-08-06 20:46:27,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 20:46:27,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-06 20:46:27,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 20:46:27,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 20:46:27,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 20:46:27,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/1) ... [2021-08-06 20:46:27,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/1) ... [2021-08-06 20:46:27,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 20:46:27,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 20:46:27,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 20:46:27,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 20:46:27,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/1) ... [2021-08-06 20:46:27,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/1) ... [2021-08-06 20:46:27,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/1) ... [2021-08-06 20:46:27,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/1) ... [2021-08-06 20:46:27,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/1) ... [2021-08-06 20:46:27,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/1) ... [2021-08-06 20:46:27,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/1) ... [2021-08-06 20:46:27,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 20:46:27,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 20:46:27,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 20:46:27,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 20:46:27,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/1) ... [2021-08-06 20:46:27,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 20:46:27,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 20:46:27,630 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) [2021-08-06 20:46:27,651 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 [2021-08-06 20:46:27,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-06 20:46:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-06 20:46:27,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-06 20:46:27,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-06 20:46:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-06 20:46:27,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-06 20:46:27,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-06 20:46:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 20:46:27,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 20:46:27,669 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 20:46:27,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 20:46:27,860 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-06 20:46:27,861 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 08:46:27 BoogieIcfgContainer [2021-08-06 20:46:27,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 20:46:27,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 20:46:27,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 20:46:27,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 20:46:27,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 08:46:27" (1/2) ... [2021-08-06 20:46:27,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2794ce and model type easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 08:46:27, skipping insertion in model container [2021-08-06 20:46:27,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 08:46:27" (2/2) ... [2021-08-06 20:46:27,866 INFO L111 eAbstractionObserver]: Analyzing ICFG easy6.wvr.bpl [2021-08-06 20:46:27,869 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 20:46:27,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 20:46:27,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 20:46:27,870 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 20:46:27,894 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-06 20:46:27,927 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 20:46:27,933 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 [2021-08-06 20:46:27,933 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-06 20:46:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 130 states have (on average 1.6) internal successors, (208), 151 states have internal predecessors, (208), 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) [2021-08-06 20:46:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 20:46:28,097 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 20:46:28,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 20:46:28,098 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 20:46:28,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 20:46:28,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1625999289, now seen corresponding path program 1 times [2021-08-06 20:46:28,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 20:46:28,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95606563] [2021-08-06 20:46:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 20:46:28,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 20:46:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 20:46:28,324 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 8, result has 46.7 percent of original size [2021-08-06 20:46:28,326 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 8, result has 46.7 percent of original size [2021-08-06 20:46:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 20:46:28,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 20:46:28,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95606563] [2021-08-06 20:46:28,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95606563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 20:46:28,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 20:46:28,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 20:46:28,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188359432] [2021-08-06 20:46:28,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 20:46:28,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 20:46:28,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 20:46:28,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 20:46:28,367 INFO L87 Difference]: Start difference. First operand has 152 states, 130 states have (on average 1.6) internal successors, (208), 151 states have internal predecessors, (208), 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 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-08-06 20:46:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 20:46:28,497 INFO L93 Difference]: Finished difference Result 202 states and 264 transitions. [2021-08-06 20:46:28,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 20:46:28,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-08-06 20:46:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 20:46:28,504 INFO L225 Difference]: With dead ends: 202 [2021-08-06 20:46:28,504 INFO L226 Difference]: Without dead ends: 121 [2021-08-06 20:46:28,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-06 20:46:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-08-06 20:46:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 97. [2021-08-06 20:46:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.40625) internal successors, (135), 96 states have internal predecessors, (135), 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) [2021-08-06 20:46:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2021-08-06 20:46:28,530 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 31 [2021-08-06 20:46:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 20:46:28,530 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2021-08-06 20:46:28,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-08-06 20:46:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2021-08-06 20:46:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 20:46:28,531 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 20:46:28,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 20:46:28,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 20:46:28,532 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 20:46:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 20:46:28,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1853129453, now seen corresponding path program 2 times [2021-08-06 20:46:28,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 20:46:28,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009329839] [2021-08-06 20:46:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 20:46:28,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 20:46:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 20:46:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 20:46:28,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 20:46:28,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009329839] [2021-08-06 20:46:28,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009329839] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 20:46:28,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 20:46:28,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 20:46:28,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165568063] [2021-08-06 20:46:28,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 20:46:28,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 20:46:28,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 20:46:28,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-06 20:46:28,629 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2021-08-06 20:46:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 20:46:28,738 INFO L93 Difference]: Finished difference Result 191 states and 274 transitions. [2021-08-06 20:46:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 20:46:28,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 31 [2021-08-06 20:46:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 20:46:28,739 INFO L225 Difference]: With dead ends: 191 [2021-08-06 20:46:28,739 INFO L226 Difference]: Without dead ends: 161 [2021-08-06 20:46:28,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-08-06 20:46:28,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-08-06 20:46:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 87. [2021-08-06 20:46:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 86 states have internal predecessors, (120), 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) [2021-08-06 20:46:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 120 transitions. [2021-08-06 20:46:28,746 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 120 transitions. Word has length 31 [2021-08-06 20:46:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 20:46:28,746 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 120 transitions. [2021-08-06 20:46:28,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2021-08-06 20:46:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 120 transitions. [2021-08-06 20:46:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 20:46:28,747 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 20:46:28,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 20:46:28,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 20:46:28,748 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 20:46:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 20:46:28,748 INFO L82 PathProgramCache]: Analyzing trace with hash 999956021, now seen corresponding path program 3 times [2021-08-06 20:46:28,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 20:46:28,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086675709] [2021-08-06 20:46:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 20:46:28,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 20:46:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 20:46:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 20:46:28,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 20:46:28,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086675709] [2021-08-06 20:46:28,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086675709] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 20:46:28,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 20:46:28,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 20:46:28,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062344181] [2021-08-06 20:46:28,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 20:46:28,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 20:46:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 20:46:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 20:46:28,804 INFO L87 Difference]: Start difference. First operand 87 states and 120 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-08-06 20:46:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 20:46:28,824 INFO L93 Difference]: Finished difference Result 81 states and 108 transitions. [2021-08-06 20:46:28,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 20:46:28,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-08-06 20:46:28,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 20:46:28,825 INFO L225 Difference]: With dead ends: 81 [2021-08-06 20:46:28,825 INFO L226 Difference]: Without dead ends: 81 [2021-08-06 20:46:28,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 20:46:28,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-08-06 20:46:28,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-08-06 20:46:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.35) internal successors, (108), 80 states have internal predecessors, (108), 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) [2021-08-06 20:46:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 108 transitions. [2021-08-06 20:46:28,829 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 108 transitions. Word has length 31 [2021-08-06 20:46:28,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 20:46:28,830 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 108 transitions. [2021-08-06 20:46:28,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-08-06 20:46:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 108 transitions. [2021-08-06 20:46:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 20:46:28,830 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 20:46:28,831 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 20:46:28,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 20:46:28,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 20:46:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 20:46:28,831 INFO L82 PathProgramCache]: Analyzing trace with hash 644991713, now seen corresponding path program 4 times [2021-08-06 20:46:28,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 20:46:28,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962657376] [2021-08-06 20:46:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 20:46:28,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 20:46:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 20:46:28,937 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 8, result has 46.7 percent of original size [2021-08-06 20:46:28,938 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 8, result has 46.7 percent of original size [2021-08-06 20:46:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 20:46:28,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 20:46:28,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962657376] [2021-08-06 20:46:28,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962657376] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 20:46:28,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 20:46:28,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 20:46:28,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766831759] [2021-08-06 20:46:28,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 20:46:28,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 20:46:28,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 20:46:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 20:46:28,953 INFO L87 Difference]: Start difference. First operand 81 states and 108 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-08-06 20:46:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 20:46:29,006 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2021-08-06 20:46:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 20:46:29,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-08-06 20:46:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 20:46:29,007 INFO L225 Difference]: With dead ends: 103 [2021-08-06 20:46:29,007 INFO L226 Difference]: Without dead ends: 73 [2021-08-06 20:46:29,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.7ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-06 20:46:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-06 20:46:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2021-08-06 20:46:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 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) [2021-08-06 20:46:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2021-08-06 20:46:29,011 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 31 [2021-08-06 20:46:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 20:46:29,011 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2021-08-06 20:46:29,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-08-06 20:46:29,011 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2021-08-06 20:46:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 20:46:29,012 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 20:46:29,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 20:46:29,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 20:46:29,012 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 20:46:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 20:46:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1727212409, now seen corresponding path program 5 times [2021-08-06 20:46:29,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 20:46:29,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838853625] [2021-08-06 20:46:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 20:46:29,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 20:46:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 20:46:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 20:46:29,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 20:46:29,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838853625] [2021-08-06 20:46:29,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838853625] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 20:46:29,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 20:46:29,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 20:46:29,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561158206] [2021-08-06 20:46:29,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 20:46:29,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 20:46:29,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 20:46:29,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-06 20:46:29,121 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-08-06 20:46:29,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 20:46:29,230 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2021-08-06 20:46:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 20:46:29,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2021-08-06 20:46:29,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 20:46:29,231 INFO L225 Difference]: With dead ends: 128 [2021-08-06 20:46:29,232 INFO L226 Difference]: Without dead ends: 125 [2021-08-06 20:46:29,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-08-06 20:46:29,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-06 20:46:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 70. [2021-08-06 20:46:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 69 states have internal predecessors, (93), 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) [2021-08-06 20:46:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2021-08-06 20:46:29,236 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 31 [2021-08-06 20:46:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 20:46:29,237 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2021-08-06 20:46:29,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-08-06 20:46:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2021-08-06 20:46:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 20:46:29,237 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 20:46:29,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 20:46:29,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 20:46:29,238 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 20:46:29,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 20:46:29,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1115577001, now seen corresponding path program 6 times [2021-08-06 20:46:29,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 20:46:29,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746366443] [2021-08-06 20:46:29,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 20:46:29,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 20:46:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 20:46:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 20:46:29,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 20:46:29,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746366443] [2021-08-06 20:46:29,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746366443] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 20:46:29,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 20:46:29,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 20:46:29,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078830348] [2021-08-06 20:46:29,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 20:46:29,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 20:46:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 20:46:29,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-06 20:46:29,354 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-08-06 20:46:29,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 20:46:29,510 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2021-08-06 20:46:29,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 20:46:29,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2021-08-06 20:46:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 20:46:29,511 INFO L225 Difference]: With dead ends: 119 [2021-08-06 20:46:29,512 INFO L226 Difference]: Without dead ends: 105 [2021-08-06 20:46:29,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-08-06 20:46:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-08-06 20:46:29,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 60. [2021-08-06 20:46:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 59 states have internal predecessors, (78), 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) [2021-08-06 20:46:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2021-08-06 20:46:29,515 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 31 [2021-08-06 20:46:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 20:46:29,515 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2021-08-06 20:46:29,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-08-06 20:46:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2021-08-06 20:46:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 20:46:29,516 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 20:46:29,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 20:46:29,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 20:46:29,516 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 20:46:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 20:46:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1132841385, now seen corresponding path program 7 times [2021-08-06 20:46:29,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 20:46:29,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964605612] [2021-08-06 20:46:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 20:46:29,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 20:46:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 20:46:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 20:46:29,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 20:46:29,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964605612] [2021-08-06 20:46:29,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964605612] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 20:46:29,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 20:46:29,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 20:46:29,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693717253] [2021-08-06 20:46:29,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 20:46:29,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 20:46:29,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 20:46:29,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-06 20:46:29,618 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-08-06 20:46:29,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 20:46:29,738 INFO L93 Difference]: Finished difference Result 114 states and 149 transitions. [2021-08-06 20:46:29,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 20:46:29,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2021-08-06 20:46:29,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 20:46:29,739 INFO L225 Difference]: With dead ends: 114 [2021-08-06 20:46:29,739 INFO L226 Difference]: Without dead ends: 111 [2021-08-06 20:46:29,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-08-06 20:46:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-06 20:46:29,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 71. [2021-08-06 20:46:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 70 states have internal predecessors, (94), 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) [2021-08-06 20:46:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2021-08-06 20:46:29,743 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 31 [2021-08-06 20:46:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 20:46:29,743 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2021-08-06 20:46:29,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-08-06 20:46:29,743 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2021-08-06 20:46:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 20:46:29,744 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 20:46:29,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 20:46:29,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 20:46:29,744 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 20:46:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 20:46:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash 319336501, now seen corresponding path program 8 times [2021-08-06 20:46:29,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 20:46:29,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120921395] [2021-08-06 20:46:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 20:46:29,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 20:46:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 20:46:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 20:46:29,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 20:46:29,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120921395] [2021-08-06 20:46:29,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120921395] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 20:46:29,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 20:46:29,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 20:46:29,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633360965] [2021-08-06 20:46:29,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 20:46:29,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 20:46:29,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 20:46:29,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-06 20:46:29,843 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-08-06 20:46:29,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 20:46:29,960 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2021-08-06 20:46:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 20:46:29,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2021-08-06 20:46:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 20:46:29,963 INFO L225 Difference]: With dead ends: 105 [2021-08-06 20:46:29,963 INFO L226 Difference]: Without dead ends: 93 [2021-08-06 20:46:29,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-08-06 20:46:29,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-06 20:46:29,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-08-06 20:46:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 62 states have internal predecessors, (81), 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) [2021-08-06 20:46:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2021-08-06 20:46:29,968 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 31 [2021-08-06 20:46:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 20:46:29,969 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2021-08-06 20:46:29,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2021-08-06 20:46:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2021-08-06 20:46:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 20:46:29,971 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 20:46:29,972 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 20:46:29,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 20:46:29,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 20:46:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 20:46:29,972 INFO L82 PathProgramCache]: Analyzing trace with hash -582648967, now seen corresponding path program 9 times [2021-08-06 20:46:29,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 20:46:29,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792549277] [2021-08-06 20:46:29,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 20:46:29,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 20:46:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 20:46:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 20:46:30,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 20:46:30,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792549277] [2021-08-06 20:46:30,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792549277] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 20:46:30,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 20:46:30,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 20:46:30,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653113091] [2021-08-06 20:46:30,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 20:46:30,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 20:46:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 20:46:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 20:46:30,007 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-08-06 20:46:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 20:46:30,010 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2021-08-06 20:46:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 20:46:30,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-08-06 20:46:30,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 20:46:30,010 INFO L225 Difference]: With dead ends: 62 [2021-08-06 20:46:30,010 INFO L226 Difference]: Without dead ends: 54 [2021-08-06 20:46:30,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 20:46:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-06 20:46:30,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-08-06 20:46:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 53 states have internal predecessors, (68), 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) [2021-08-06 20:46:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2021-08-06 20:46:30,012 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 31 [2021-08-06 20:46:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 20:46:30,012 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2021-08-06 20:46:30,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-08-06 20:46:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2021-08-06 20:46:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-06 20:46:30,013 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 20:46:30,013 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 20:46:30,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 20:46:30,013 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 20:46:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 20:46:30,014 INFO L82 PathProgramCache]: Analyzing trace with hash -144501845, now seen corresponding path program 10 times [2021-08-06 20:46:30,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 20:46:30,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959486578] [2021-08-06 20:46:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 20:46:30,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 20:46:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 20:46:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 20:46:30,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 20:46:30,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959486578] [2021-08-06 20:46:30,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959486578] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 20:46:30,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 20:46:30,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 20:46:30,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357054386] [2021-08-06 20:46:30,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 20:46:30,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 20:46:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 20:46:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-06 20:46:30,077 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2021-08-06 20:46:30,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 20:46:30,110 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-08-06 20:46:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 20:46:30,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 31 [2021-08-06 20:46:30,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 20:46:30,110 INFO L225 Difference]: With dead ends: 31 [2021-08-06 20:46:30,111 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 20:46:30,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-08-06 20:46:30,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 20:46:30,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 20:46:30,111 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) [2021-08-06 20:46:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 20:46:30,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-08-06 20:46:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 20:46:30,111 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 20:46:30,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2021-08-06 20:46:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 20:46:30,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 20:46:30,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-06 20:46:30,137 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 20:46:30,137 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 20:46:30,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 20:46:30,141 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 20:46:30,141 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 20:46:30,142 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 08:46:30 BasicIcfg [2021-08-06 20:46:30,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 20:46:30,143 INFO L168 Benchmark]: Toolchain (without parser) took 2579.11 ms. Allocated memory was 197.1 MB in the beginning and 239.1 MB in the end (delta: 41.9 MB). Free memory was 177.4 MB in the beginning and 105.1 MB in the end (delta: 72.3 MB). Peak memory consumption was 114.2 MB. Max. memory is 8.0 GB. [2021-08-06 20:46:30,143 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.39 ms. Allocated memory is still 197.1 MB. Free memory is still 178.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 20:46:30,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.15 ms. Allocated memory is still 197.1 MB. Free memory was 177.3 MB in the beginning and 175.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 20:46:30,143 INFO L168 Benchmark]: Boogie Preprocessor took 12.44 ms. Allocated memory is still 197.1 MB. Free memory was 175.8 MB in the beginning and 174.9 MB in the end (delta: 872.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 20:46:30,143 INFO L168 Benchmark]: RCFGBuilder took 259.31 ms. Allocated memory is still 197.1 MB. Free memory was 174.8 MB in the beginning and 163.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-06 20:46:30,144 INFO L168 Benchmark]: TraceAbstraction took 2280.27 ms. Allocated memory was 197.1 MB in the beginning and 239.1 MB in the end (delta: 41.9 MB). Free memory was 162.6 MB in the beginning and 105.1 MB in the end (delta: 57.5 MB). Peak memory consumption was 99.5 MB. Max. memory is 8.0 GB. [2021-08-06 20:46:30,144 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 0.39 ms. Allocated memory is still 197.1 MB. Free memory is still 178.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.15 ms. Allocated memory is still 197.1 MB. Free memory was 177.3 MB in the beginning and 175.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.44 ms. Allocated memory is still 197.1 MB. Free memory was 175.8 MB in the beginning and 174.9 MB in the end (delta: 872.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 259.31 ms. Allocated memory is still 197.1 MB. Free memory was 174.8 MB in the beginning and 163.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2280.27 ms. Allocated memory was 197.1 MB in the beginning and 239.1 MB in the end (delta: 41.9 MB). Free memory was 162.6 MB in the beginning and 105.1 MB in the end (delta: 57.5 MB). Peak memory consumption was 99.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 120, positive: 108, positive conditional: 108, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 120, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 120, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 120, positive: 105, positive conditional: 0, positive unconditional: 105, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 57, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 120, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 120, unknown conditional: 0, unknown unconditional: 120] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Independence queries for same thread: 0 - 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: 60]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 60 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2214.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 15.0ms, AutomataDifference: 895.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 155.9ms, PartialOrderReductionTime: 139.6ms, HoareTripleCheckerStatistics: 368 SDtfs, 742 SDslu, 1167 SDs, 0 SdLazy, 388 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 268.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 725.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 46.6ms AutomataMinimizationTime, 10 MinimizatonAttempts, 279 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.2ms SsaConstructionTime, 59.2ms SatisfiabilityAnalysisTime, 879.4ms InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 1120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-06 20:46:30,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...