/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 16:07:26,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 16:07:26,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 16:07:26,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 16:07:26,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 16:07:26,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 16:07:26,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 16:07:26,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-15 16:07:26,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 16:07:26,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 16:07:26,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 16:07:26,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 16:07:26,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 16:07:26,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 16:07:26,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 16:07:26,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 16:07:26,439 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 16:07:26,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 16:07:26,439 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 16:07:26,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 16:07:26,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 16:07:26,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 16:07:26,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 16:07:26,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 16:07:26,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 16:07:26,440 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 16:07:26,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 16:07:26,440 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 16:07:26,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 16:07:26,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 16:07:26,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 16:07:26,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 16:07:26,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 16:07:26,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 16:07:26,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 16:07:26,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 16:07:26,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 16:07:26,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 16:07:26,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 16:07:26,441 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 16:07:26,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 16:07:26,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 16:07:26,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 16:07:26,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 16:07:26,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 16:07:26,650 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 16:07:26,650 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 16:07:26,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl [2022-03-15 16:07:26,651 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl' [2022-03-15 16:07:26,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 16:07:26,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 16:07:26,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 16:07:26,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 16:07:26,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 16:07:26,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/1) ... [2022-03-15 16:07:26,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/1) ... [2022-03-15 16:07:26,706 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 16:07:26,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 16:07:26,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 16:07:26,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 16:07:26,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 16:07:26,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/1) ... [2022-03-15 16:07:26,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/1) ... [2022-03-15 16:07:26,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/1) ... [2022-03-15 16:07:26,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/1) ... [2022-03-15 16:07:26,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/1) ... [2022-03-15 16:07:26,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/1) ... [2022-03-15 16:07:26,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/1) ... [2022-03-15 16:07:26,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 16:07:26,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 16:07:26,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 16:07:26,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 16:07:26,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/1) ... [2022-03-15 16:07:26,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 16:07:26,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:07:26,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 16:07:26,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 16:07:26,778 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 16:07:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 16:07:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 16:07:26,779 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 16:07:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 16:07:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 16:07:26,779 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 16:07:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 16:07:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 16:07:26,779 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-15 16:07:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 16:07:26,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 16:07:26,780 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 16:07:26,811 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 16:07:26,813 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 16:07:26,876 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 16:07:26,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 16:07:26,880 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 16:07:26,888 INFO L202 PluginConnector]: Adding new model simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 04:07:26 BoogieIcfgContainer [2022-03-15 16:07:26,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 16:07:26,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 16:07:26,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 16:07:26,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 16:07:26,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:07:26" (1/2) ... [2022-03-15 16:07:26,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f75098d and model type simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 04:07:26, skipping insertion in model container [2022-03-15 16:07:26,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 04:07:26" (2/2) ... [2022-03-15 16:07:26,900 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-equiv.wvr.bpl [2022-03-15 16:07:26,903 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 16:07:26,903 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 16:07:26,903 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 16:07:26,903 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 16:07:26,940 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 16:07:26,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 16:07:26,976 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 16:07:26,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 16:07:26,986 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 23 transitions, 70 flow [2022-03-15 16:07:27,016 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 95 states, 94 states have (on average 2.1702127659574466) internal successors, (204), 94 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:07:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 94 states have (on average 2.1702127659574466) internal successors, (204), 94 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:07:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 16:07:27,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:07:27,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:07:27,026 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:07:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:07:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash 840997656, now seen corresponding path program 1 times [2022-03-15 16:07:27,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:07:27,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598148207] [2022-03-15 16:07:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:07:27,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:07:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:07:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:07:27,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:07:27,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598148207] [2022-03-15 16:07:27,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598148207] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:07:27,243 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:07:27,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 16:07:27,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92299635] [2022-03-15 16:07:27,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:07:27,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 16:07:27,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:07:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 16:07:27,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-15 16:07:27,283 INFO L87 Difference]: Start difference. First operand has 95 states, 94 states have (on average 2.1702127659574466) internal successors, (204), 94 states have internal predecessors, (204), 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 2.5714285714285716) internal successors, (18), 6 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) [2022-03-15 16:07:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:07:27,544 INFO L93 Difference]: Finished difference Result 153 states and 327 transitions. [2022-03-15 16:07:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 16:07:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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 [2022-03-15 16:07:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:07:27,554 INFO L225 Difference]: With dead ends: 153 [2022-03-15 16:07:27,555 INFO L226 Difference]: Without dead ends: 106 [2022-03-15 16:07:27,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-15 16:07:27,558 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 16:07:27,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 76 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 16:07:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-03-15 16:07:27,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2022-03-15 16:07:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.021505376344086) internal successors, (188), 93 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:07:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 188 transitions. [2022-03-15 16:07:27,646 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 188 transitions. Word has length 18 [2022-03-15 16:07:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:07:27,647 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 188 transitions. [2022-03-15 16:07:27,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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) [2022-03-15 16:07:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 188 transitions. [2022-03-15 16:07:27,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 16:07:27,652 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:07:27,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:07:27,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 16:07:27,653 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:07:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:07:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1364341444, now seen corresponding path program 2 times [2022-03-15 16:07:27,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:07:27,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200204825] [2022-03-15 16:07:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:07:27,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:07:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:07:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:07:27,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:07:27,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200204825] [2022-03-15 16:07:27,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200204825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:07:27,762 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:07:27,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 16:07:27,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237992845] [2022-03-15 16:07:27,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:07:27,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 16:07:27,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:07:27,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 16:07:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-15 16:07:27,764 INFO L87 Difference]: Start difference. First operand 94 states and 188 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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) [2022-03-15 16:07:27,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:07:27,879 INFO L93 Difference]: Finished difference Result 160 states and 315 transitions. [2022-03-15 16:07:27,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 16:07:27,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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 [2022-03-15 16:07:27,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:07:27,881 INFO L225 Difference]: With dead ends: 160 [2022-03-15 16:07:27,881 INFO L226 Difference]: Without dead ends: 131 [2022-03-15 16:07:27,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-15 16:07:27,882 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:07:27,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 49 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 16:07:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-03-15 16:07:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 99. [2022-03-15 16:07:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.0) internal successors, (196), 98 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:07:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 196 transitions. [2022-03-15 16:07:27,889 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 196 transitions. Word has length 18 [2022-03-15 16:07:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:07:27,889 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 196 transitions. [2022-03-15 16:07:27,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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) [2022-03-15 16:07:27,889 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 196 transitions. [2022-03-15 16:07:27,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 16:07:27,890 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:07:27,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:07:27,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 16:07:27,890 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:07:27,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:07:27,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1226745766, now seen corresponding path program 3 times [2022-03-15 16:07:27,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:07:27,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584064284] [2022-03-15 16:07:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:07:27,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:07:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:07:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:07:27,961 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:07:27,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584064284] [2022-03-15 16:07:27,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584064284] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:07:27,962 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:07:27,962 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 16:07:27,962 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161235005] [2022-03-15 16:07:27,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:07:27,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 16:07:27,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:07:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 16:07:27,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-15 16:07:27,963 INFO L87 Difference]: Start difference. First operand 99 states and 196 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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) [2022-03-15 16:07:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:07:28,077 INFO L93 Difference]: Finished difference Result 150 states and 299 transitions. [2022-03-15 16:07:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 16:07:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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 [2022-03-15 16:07:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:07:28,078 INFO L225 Difference]: With dead ends: 150 [2022-03-15 16:07:28,078 INFO L226 Difference]: Without dead ends: 75 [2022-03-15 16:07:28,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-15 16:07:28,079 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:07:28,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 65 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 16:07:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-03-15 16:07:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2022-03-15 16:07:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.9402985074626866) internal successors, (130), 67 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:07:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 130 transitions. [2022-03-15 16:07:28,084 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 130 transitions. Word has length 18 [2022-03-15 16:07:28,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:07:28,084 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 130 transitions. [2022-03-15 16:07:28,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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) [2022-03-15 16:07:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 130 transitions. [2022-03-15 16:07:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 16:07:28,085 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:07:28,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:07:28,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 16:07:28,085 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:07:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:07:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1371916790, now seen corresponding path program 4 times [2022-03-15 16:07:28,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:07:28,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469730862] [2022-03-15 16:07:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:07:28,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:07:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:07:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:07:28,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:07:28,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469730862] [2022-03-15 16:07:28,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469730862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:07:28,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:07:28,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 16:07:28,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229620035] [2022-03-15 16:07:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:07:28,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 16:07:28,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:07:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 16:07:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-15 16:07:28,176 INFO L87 Difference]: Start difference. First operand 68 states and 130 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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) [2022-03-15 16:07:28,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:07:28,245 INFO L93 Difference]: Finished difference Result 90 states and 169 transitions. [2022-03-15 16:07:28,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 16:07:28,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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 [2022-03-15 16:07:28,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:07:28,247 INFO L225 Difference]: With dead ends: 90 [2022-03-15 16:07:28,247 INFO L226 Difference]: Without dead ends: 49 [2022-03-15 16:07:28,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-15 16:07:28,254 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:07:28,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 54 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:07:28,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-15 16:07:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-03-15 16:07:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.875) internal successors, (90), 48 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:07:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 90 transitions. [2022-03-15 16:07:28,259 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 90 transitions. Word has length 18 [2022-03-15 16:07:28,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:07:28,260 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 90 transitions. [2022-03-15 16:07:28,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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) [2022-03-15 16:07:28,260 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 90 transitions. [2022-03-15 16:07:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 16:07:28,260 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:07:28,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:07:28,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 16:07:28,261 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:07:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:07:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1598421622, now seen corresponding path program 5 times [2022-03-15 16:07:28,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:07:28,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132278227] [2022-03-15 16:07:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:07:28,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:07:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:07:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:07:28,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:07:28,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132278227] [2022-03-15 16:07:28,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132278227] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:07:28,323 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:07:28,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 16:07:28,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532986767] [2022-03-15 16:07:28,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:07:28,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 16:07:28,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:07:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 16:07:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-15 16:07:28,324 INFO L87 Difference]: Start difference. First operand 49 states and 90 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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) [2022-03-15 16:07:28,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:07:28,407 INFO L93 Difference]: Finished difference Result 74 states and 135 transitions. [2022-03-15 16:07:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 16:07:28,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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 [2022-03-15 16:07:28,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:07:28,408 INFO L225 Difference]: With dead ends: 74 [2022-03-15 16:07:28,408 INFO L226 Difference]: Without dead ends: 37 [2022-03-15 16:07:28,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-15 16:07:28,415 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:07:28,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 55 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 16:07:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-15 16:07:28,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-03-15 16:07:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:07:28,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 60 transitions. [2022-03-15 16:07:28,420 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 60 transitions. Word has length 18 [2022-03-15 16:07:28,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:07:28,421 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 60 transitions. [2022-03-15 16:07:28,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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) [2022-03-15 16:07:28,421 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2022-03-15 16:07:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 16:07:28,421 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:07:28,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:07:28,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 16:07:28,422 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:07:28,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:07:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1784118006, now seen corresponding path program 6 times [2022-03-15 16:07:28,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:07:28,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466223134] [2022-03-15 16:07:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:07:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:07:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:07:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:07:28,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:07:28,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466223134] [2022-03-15 16:07:28,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466223134] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:07:28,515 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:07:28,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 16:07:28,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120703260] [2022-03-15 16:07:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:07:28,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 16:07:28,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:07:28,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 16:07:28,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-15 16:07:28,516 INFO L87 Difference]: Start difference. First operand 37 states and 60 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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) [2022-03-15 16:07:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:07:28,567 INFO L93 Difference]: Finished difference Result 35 states and 58 transitions. [2022-03-15 16:07:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 16:07:28,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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 [2022-03-15 16:07:28,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:07:28,568 INFO L225 Difference]: With dead ends: 35 [2022-03-15 16:07:28,568 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 16:07:28,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-15 16:07:28,569 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:07:28,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:07:28,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 16:07:28,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 16:07:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:07:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 16:07:28,570 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-03-15 16:07:28,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:07:28,570 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 16:07:28,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 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) [2022-03-15 16:07:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 16:07:28,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 16:07:28,572 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-15 16:07:28,572 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-15 16:07:28,572 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-15 16:07:28,572 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-15 16:07:28,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 16:07:28,575 INFO L732 BasicCegarLoop]: Path program histogram: [6] [2022-03-15 16:07:28,576 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 16:07:28,576 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 16:07:28,578 INFO L202 PluginConnector]: Adding new model simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 04:07:28 BasicIcfg [2022-03-15 16:07:28,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 16:07:28,578 INFO L158 Benchmark]: Toolchain (without parser) took 1897.47ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 159.5MB in the beginning and 139.3MB in the end (delta: 20.2MB). Peak memory consumption was 60.0MB. Max. memory is 8.0GB. [2022-03-15 16:07:28,578 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 16:07:28,579 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.18ms. Allocated memory is still 195.0MB. Free memory was 159.4MB in the beginning and 158.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 16:07:28,579 INFO L158 Benchmark]: Boogie Preprocessor took 11.38ms. Allocated memory is still 195.0MB. Free memory was 157.8MB in the beginning and 157.1MB in the end (delta: 759.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 16:07:28,579 INFO L158 Benchmark]: RCFGBuilder took 167.61ms. Allocated memory is still 195.0MB. Free memory was 156.9MB in the beginning and 148.8MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 16:07:28,579 INFO L158 Benchmark]: TraceAbstraction took 1683.13ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 148.4MB in the beginning and 139.3MB in the end (delta: 9.0MB). Peak memory consumption was 48.4MB. Max. memory is 8.0GB. [2022-03-15 16:07:28,580 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 0.10ms. Allocated memory is still 195.0MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.18ms. Allocated memory is still 195.0MB. Free memory was 159.4MB in the beginning and 158.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.38ms. Allocated memory is still 195.0MB. Free memory was 157.8MB in the beginning and 157.1MB in the end (delta: 759.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 167.61ms. Allocated memory is still 195.0MB. Free memory was 156.9MB in the beginning and 148.8MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1683.13ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 148.4MB in the beginning and 139.3MB in the end (delta: 9.0MB). Peak memory consumption was 48.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: 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, 39 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 164 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 164 mSDsluCounter, 331 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 510 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 790 IncrementalHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 89 mSDtfsCounter, 790 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 10 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=2, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 662 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 16:07:28,605 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...