/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 21:13:42,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 21:13:42,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 21:13:42,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 21:13:42,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 21:13:42,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 21:13:42,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 21:13:42,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 21:13:42,705 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 21:13:42,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 21:13:42,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 21:13:42,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 21:13:42,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 21:13:42,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 21:13:42,706 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 21:13:42,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 21:13:42,706 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 21:13:42,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 21:13:42,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 21:13:42,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 21:13:42,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 21:13:42,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 21:13:42,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 21:13:42,707 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 21:13:42,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 21:13:42,707 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 21:13:42,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 21:13:42,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 21:13:42,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 21:13:42,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 21:13:42,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 21:13:42,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:13:42,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 21:13:42,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 21:13:42,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 21:13:42,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 21:13:42,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 21:13:42,709 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 21:13:42,709 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 21:13:42,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 21:13:42,709 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 21:13:42,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 21:13:42,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 21:13:42,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 21:13:42,884 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 21:13:42,887 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 21:13:42,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl [2022-03-15 21:13:42,888 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl' [2022-03-15 21:13:42,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 21:13:42,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 21:13:42,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 21:13:42,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 21:13:42,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 21:13:42,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/1) ... [2022-03-15 21:13:42,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/1) ... [2022-03-15 21:13:42,924 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 21:13:42,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 21:13:42,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 21:13:42,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 21:13:42,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 21:13:42,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/1) ... [2022-03-15 21:13:42,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/1) ... [2022-03-15 21:13:42,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/1) ... [2022-03-15 21:13:42,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/1) ... [2022-03-15 21:13:42,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/1) ... [2022-03-15 21:13:42,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/1) ... [2022-03-15 21:13:42,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/1) ... [2022-03-15 21:13:42,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 21:13:42,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 21:13:42,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 21:13:42,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 21:13:42,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/1) ... [2022-03-15 21:13:42,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:13:42,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:13:42,962 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 21:13:42,983 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 21:13:42,990 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 21:13:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 21:13:42,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 21:13:42,991 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 21:13:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 21:13:42,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 21:13:42,991 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 21:13:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 21:13:42,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 21:13:42,992 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 21:13:43,026 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 21:13:43,027 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 21:13:43,145 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 21:13:43,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 21:13:43,150 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 21:13:43,151 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:13:43 BoogieIcfgContainer [2022-03-15 21:13:43,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 21:13:43,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 21:13:43,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 21:13:43,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 21:13:43,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:13:42" (1/2) ... [2022-03-15 21:13:43,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d86e816 and model type bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 09:13:43, skipping insertion in model container [2022-03-15 21:13:43,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:13:43" (2/2) ... [2022-03-15 21:13:43,179 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.bpl [2022-03-15 21:13:43,182 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 21:13:43,182 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 21:13:43,183 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 21:13:43,183 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 21:13:43,218 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 21:13:43,259 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 21:13:43,265 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 21:13:43,265 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 21:13:43,272 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 21:13:43,278 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 31 transitions, 78 flow [2022-03-15 21:13:43,280 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 31 transitions, 78 flow [2022-03-15 21:13:43,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 78 flow [2022-03-15 21:13:43,309 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2022-03-15 21:13:43,311 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 21:13:43,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 0/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-03-15 21:13:43,313 INFO L116 LiptonReduction]: Number of co-enabled transitions 240 [2022-03-15 21:13:43,357 INFO L131 LiptonReduction]: Checked pairs total: 1083 [2022-03-15 21:13:43,357 INFO L133 LiptonReduction]: Total number of compositions: 5 [2022-03-15 21:13:43,362 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 27 transitions, 70 flow [2022-03-15 21:13:43,380 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 124 states, 123 states have (on average 1.8048780487804879) internal successors, (222), 123 states have internal predecessors, (222), 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 21:13:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 123 states have (on average 1.8048780487804879) internal successors, (222), 123 states have internal predecessors, (222), 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 21:13:43,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 21:13:43,387 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:13:43,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:13:43,387 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:13:43,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:13:43,391 INFO L85 PathProgramCache]: Analyzing trace with hash -951609534, now seen corresponding path program 1 times [2022-03-15 21:13:43,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:13:43,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429023098] [2022-03-15 21:13:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:13:43,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:13:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:13:43,586 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 21:13:43,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:13:43,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429023098] [2022-03-15 21:13:43,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429023098] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:13:43,587 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:13:43,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 21:13:43,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [313407903] [2022-03-15 21:13:43,588 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:13:43,592 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:13:43,658 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 52 transitions. [2022-03-15 21:13:43,658 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:13:43,902 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:13:43,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 21:13:43,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:13:43,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 21:13:43,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-15 21:13:43,919 INFO L87 Difference]: Start difference. First operand has 124 states, 123 states have (on average 1.8048780487804879) internal successors, (222), 123 states have internal predecessors, (222), 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, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 21:13:44,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:13:44,054 INFO L93 Difference]: Finished difference Result 152 states and 256 transitions. [2022-03-15 21:13:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 21:13:44,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 24 [2022-03-15 21:13:44,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:13:44,064 INFO L225 Difference]: With dead ends: 152 [2022-03-15 21:13:44,064 INFO L226 Difference]: Without dead ends: 129 [2022-03-15 21:13:44,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-15 21:13:44,069 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 31 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:13:44,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 120 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:13:44,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-03-15 21:13:44,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2022-03-15 21:13:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.7798165137614679) internal successors, (194), 109 states have internal predecessors, (194), 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 21:13:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 194 transitions. [2022-03-15 21:13:44,102 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 194 transitions. Word has length 24 [2022-03-15 21:13:44,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:13:44,103 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 194 transitions. [2022-03-15 21:13:44,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 21:13:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 194 transitions. [2022-03-15 21:13:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 21:13:44,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:13:44,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:13:44,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 21:13:44,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:13:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:13:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash -784182846, now seen corresponding path program 2 times [2022-03-15 21:13:44,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:13:44,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353354920] [2022-03-15 21:13:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:13:44,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:13:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:13:44,196 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 21:13:44,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:13:44,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353354920] [2022-03-15 21:13:44,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353354920] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:13:44,200 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:13:44,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 21:13:44,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1523025127] [2022-03-15 21:13:44,201 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:13:44,202 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:13:44,205 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 50 transitions. [2022-03-15 21:13:44,205 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:13:44,325 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [682#(and (or (<= (+ n1 1) n2) (= n2 n1)) (or (<= (+ n1 1) n2) (not (= n1 0))))] [2022-03-15 21:13:44,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 21:13:44,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:13:44,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 21:13:44,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-15 21:13:44,326 INFO L87 Difference]: Start difference. First operand 110 states and 194 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 21:13:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:13:44,412 INFO L93 Difference]: Finished difference Result 194 states and 335 transitions. [2022-03-15 21:13:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 21:13:44,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 24 [2022-03-15 21:13:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:13:44,414 INFO L225 Difference]: With dead ends: 194 [2022-03-15 21:13:44,414 INFO L226 Difference]: Without dead ends: 164 [2022-03-15 21:13:44,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-15 21:13:44,415 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 53 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:13:44,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 113 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:13:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-03-15 21:13:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 100. [2022-03-15 21:13:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.7575757575757576) internal successors, (174), 99 states have internal predecessors, (174), 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 21:13:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 174 transitions. [2022-03-15 21:13:44,422 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 174 transitions. Word has length 24 [2022-03-15 21:13:44,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:13:44,422 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 174 transitions. [2022-03-15 21:13:44,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 21:13:44,422 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 174 transitions. [2022-03-15 21:13:44,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 21:13:44,423 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:13:44,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:13:44,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 21:13:44,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:13:44,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:13:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash 334301408, now seen corresponding path program 3 times [2022-03-15 21:13:44,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:13:44,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920433211] [2022-03-15 21:13:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:13:44,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:13:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:13:44,439 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 21:13:44,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:13:44,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920433211] [2022-03-15 21:13:44,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920433211] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:13:44,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:13:44,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:13:44,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [316353022] [2022-03-15 21:13:44,439 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:13:44,441 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:13:44,443 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 50 transitions. [2022-03-15 21:13:44,443 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:13:44,477 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:13:44,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 21:13:44,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:13:44,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 21:13:44,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:13:44,478 INFO L87 Difference]: Start difference. First operand 100 states and 174 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 21:13:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:13:44,487 INFO L93 Difference]: Finished difference Result 94 states and 162 transitions. [2022-03-15 21:13:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 21:13:44,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 24 [2022-03-15 21:13:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:13:44,488 INFO L225 Difference]: With dead ends: 94 [2022-03-15 21:13:44,488 INFO L226 Difference]: Without dead ends: 94 [2022-03-15 21:13:44,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:13:44,489 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:13:44,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:13:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-03-15 21:13:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-03-15 21:13:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.7419354838709677) internal successors, (162), 93 states have internal predecessors, (162), 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 21:13:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 162 transitions. [2022-03-15 21:13:44,493 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 162 transitions. Word has length 24 [2022-03-15 21:13:44,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:13:44,493 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 162 transitions. [2022-03-15 21:13:44,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 21:13:44,493 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 162 transitions. [2022-03-15 21:13:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 21:13:44,494 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:13:44,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:13:44,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 21:13:44,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:13:44,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:13:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1574635262, now seen corresponding path program 4 times [2022-03-15 21:13:44,497 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:13:44,497 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389745772] [2022-03-15 21:13:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:13:44,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:13:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:13:44,578 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 21:13:44,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:13:44,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389745772] [2022-03-15 21:13:44,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389745772] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:13:44,579 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:13:44,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 21:13:44,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [442368240] [2022-03-15 21:13:44,579 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:13:44,580 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:13:44,583 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 66 transitions. [2022-03-15 21:13:44,583 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:13:44,832 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [1372#(and (or (<= 1 n2) (< n1 n2) (= n2 n1)) (not (= n1 0))), 1373#(and (<= (+ n2 1) n1) (<= 0 n2)), 1374#(and (<= 0 n1) (<= n2 n1)), 1371#(and (not (= n1 0)) (or (< n1 n2) (= n2 n1)))] [2022-03-15 21:13:44,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 21:13:44,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:13:44,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 21:13:44,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-03-15 21:13:44,834 INFO L87 Difference]: Start difference. First operand 94 states and 162 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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 21:13:44,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:13:44,906 INFO L93 Difference]: Finished difference Result 126 states and 215 transitions. [2022-03-15 21:13:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 21:13:44,906 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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 24 [2022-03-15 21:13:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:13:44,907 INFO L225 Difference]: With dead ends: 126 [2022-03-15 21:13:44,907 INFO L226 Difference]: Without dead ends: 122 [2022-03-15 21:13:44,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-03-15 21:13:44,912 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 78 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:13:44,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 109 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:13:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-03-15 21:13:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 105. [2022-03-15 21:13:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.7403846153846154) internal successors, (181), 104 states have internal predecessors, (181), 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 21:13:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 181 transitions. [2022-03-15 21:13:44,934 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 181 transitions. Word has length 24 [2022-03-15 21:13:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:13:44,934 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 181 transitions. [2022-03-15 21:13:44,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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 21:13:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 181 transitions. [2022-03-15 21:13:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 21:13:44,935 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:13:44,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:13:44,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 21:13:44,936 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:13:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:13:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1957781630, now seen corresponding path program 5 times [2022-03-15 21:13:44,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:13:44,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749875906] [2022-03-15 21:13:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:13:44,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:13:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:13:45,001 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 21:13:45,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:13:45,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749875906] [2022-03-15 21:13:45,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749875906] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:13:45,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:13:45,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 21:13:45,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1932291588] [2022-03-15 21:13:45,002 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:13:45,003 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:13:45,006 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 58 transitions. [2022-03-15 21:13:45,006 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:13:45,137 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:13:45,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 21:13:45,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:13:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 21:13:45,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-15 21:13:45,138 INFO L87 Difference]: Start difference. First operand 105 states and 181 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 21:13:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:13:45,214 INFO L93 Difference]: Finished difference Result 123 states and 203 transitions. [2022-03-15 21:13:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 21:13:45,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 24 [2022-03-15 21:13:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:13:45,215 INFO L225 Difference]: With dead ends: 123 [2022-03-15 21:13:45,215 INFO L226 Difference]: Without dead ends: 50 [2022-03-15 21:13:45,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-15 21:13:45,216 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 44 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:13:45,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 112 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:13:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-03-15 21:13:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2022-03-15 21:13:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 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 21:13:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 58 transitions. [2022-03-15 21:13:45,218 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 58 transitions. Word has length 24 [2022-03-15 21:13:45,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:13:45,218 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 58 transitions. [2022-03-15 21:13:45,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 21:13:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 58 transitions. [2022-03-15 21:13:45,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 21:13:45,219 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:13:45,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:13:45,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 21:13:45,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:13:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:13:45,219 INFO L85 PathProgramCache]: Analyzing trace with hash -109879924, now seen corresponding path program 6 times [2022-03-15 21:13:45,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:13:45,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80653991] [2022-03-15 21:13:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:13:45,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:13:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:13:45,234 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 21:13:45,234 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:13:45,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80653991] [2022-03-15 21:13:45,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80653991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:13:45,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:13:45,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:13:45,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2071576422] [2022-03-15 21:13:45,235 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:13:45,236 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:13:45,238 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 50 transitions. [2022-03-15 21:13:45,238 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:13:45,264 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:13:45,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 21:13:45,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:13:45,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 21:13:45,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:13:45,264 INFO L87 Difference]: Start difference. First operand 42 states and 58 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:13:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:13:45,267 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2022-03-15 21:13:45,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 21:13:45,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 21:13:45,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:13:45,268 INFO L225 Difference]: With dead ends: 16 [2022-03-15 21:13:45,268 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 21:13:45,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:13:45,268 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:13:45,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:13:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 21:13:45,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 21:13:45,270 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 21:13:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 21:13:45,270 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-03-15 21:13:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:13:45,270 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 21:13:45,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:13:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 21:13:45,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 21:13:45,273 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-15 21:13:45,273 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 21:13:45,273 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 21:13:45,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 21:13:45,275 INFO L732 BasicCegarLoop]: Path program histogram: [6] [2022-03-15 21:13:45,278 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 21:13:45,278 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 21:13:45,281 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 09:13:45 BasicIcfg [2022-03-15 21:13:45,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 21:13:45,282 INFO L158 Benchmark]: Toolchain (without parser) took 2375.16ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 165.5MB in the beginning and 151.1MB in the end (delta: 14.4MB). Peak memory consumption was 56.9MB. Max. memory is 8.0GB. [2022-03-15 21:13:45,282 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 166.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 21:13:45,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.59ms. Allocated memory is still 201.3MB. Free memory was 165.4MB in the beginning and 163.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 21:13:45,282 INFO L158 Benchmark]: Boogie Preprocessor took 8.60ms. Allocated memory is still 201.3MB. Free memory was 163.8MB in the beginning and 163.0MB in the end (delta: 864.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 21:13:45,282 INFO L158 Benchmark]: RCFGBuilder took 216.29ms. Allocated memory is still 201.3MB. Free memory was 163.0MB in the beginning and 154.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 21:13:45,283 INFO L158 Benchmark]: TraceAbstraction took 2129.38ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 153.5MB in the beginning and 151.1MB in the end (delta: 2.4MB). Peak memory consumption was 44.3MB. Max. memory is 8.0GB. [2022-03-15 21:13:45,284 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 201.3MB. Free memory is still 166.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.59ms. Allocated memory is still 201.3MB. Free memory was 165.4MB in the beginning and 163.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 8.60ms. Allocated memory is still 201.3MB. Free memory was 163.8MB in the beginning and 163.0MB in the end (delta: 864.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 216.29ms. Allocated memory is still 201.3MB. Free memory was 163.0MB in the beginning and 154.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2129.38ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 153.5MB in the beginning and 151.1MB in the end (delta: 2.4MB). Peak memory consumption was 44.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 38 PlacesBefore, 34 PlacesAfterwards, 31 TransitionsBefore, 27 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 1083 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 551, positive: 451, positive conditional: 0, positive unconditional: 451, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 97, positive: 81, positive conditional: 0, positive unconditional: 81, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 551, positive: 370, positive conditional: 0, positive unconditional: 370, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 97, unknown conditional: 0, unknown unconditional: 97] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - 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: 54]: 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 5 procedures, 56 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 207 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 207 mSDsluCounter, 495 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 513 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 442 IncrementalHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 135 mSDtfsCounter, 442 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 38, 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, 108 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 656 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 21:13:45,314 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...