/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/popl20-more/min-le-max.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 22:11:17,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 22:11:17,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 22:11:17,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 22:11:17,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 22:11:17,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 22:11:17,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 22:11:17,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 22:11:17,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 22:11:17,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 22:11:17,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 22:11:17,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-15 22:11:17,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 22:11:17,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 22:11:17,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 22:11:17,969 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 22:11:17,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 22:11:17,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 22:11:17,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 22:11:17,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 22:11:17,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 22:11:17,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 22:11:17,991 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 22:11:17,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 22:11:17,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 22:11:17,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 22:11:17,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 22:11:17,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 22:11:17,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 22:11:17,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 22:11:17,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 22:11:17,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 22:11:17,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 22:11:17,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 22:11:17,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 22:11:17,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 22:11:17,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 22:11:17,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 22:11:17,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 22:11:17,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 22:11:17,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 22:11:17,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 22:11:17,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 22:11:17,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 22:11:17,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 22:11:17,994 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 22:11:17,994 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 22:11:17,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 22:11:17,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 22:11:18,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 22:11:18,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 22:11:18,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 22:11:18,155 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 22:11:18,158 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 22:11:18,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-le-max.wvr.bpl [2022-03-15 22:11:18,159 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-le-max.wvr.bpl' [2022-03-15 22:11:18,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 22:11:18,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 22:11:18,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 22:11:18,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 22:11:18,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 22:11:18,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/1) ... [2022-03-15 22:11:18,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/1) ... [2022-03-15 22:11:18,198 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 22:11:18,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 22:11:18,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 22:11:18,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 22:11:18,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 22:11:18,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/1) ... [2022-03-15 22:11:18,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/1) ... [2022-03-15 22:11:18,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/1) ... [2022-03-15 22:11:18,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/1) ... [2022-03-15 22:11:18,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/1) ... [2022-03-15 22:11:18,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/1) ... [2022-03-15 22:11:18,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/1) ... [2022-03-15 22:11:18,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 22:11:18,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 22:11:18,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 22:11:18,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 22:11:18,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/1) ... [2022-03-15 22:11:18,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 22:11:18,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:11:18,233 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 22:11:18,254 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 22:11:18,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 22:11:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 22:11:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 22:11:18,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 22:11:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 22:11:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 22:11:18,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 22:11:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 22:11:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 22:11:18,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-15 22:11:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 22:11:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 22:11:18,266 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 22:11:18,298 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 22:11:18,299 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 22:11:18,367 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 22:11:18,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 22:11:18,371 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 22:11:18,372 INFO L202 PluginConnector]: Adding new model min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 10:11:18 BoogieIcfgContainer [2022-03-15 22:11:18,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 22:11:18,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 22:11:18,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 22:11:18,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 22:11:18,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:11:18" (1/2) ... [2022-03-15 22:11:18,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c6df97 and model type min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 10:11:18, skipping insertion in model container [2022-03-15 22:11:18,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 10:11:18" (2/2) ... [2022-03-15 22:11:18,379 INFO L111 eAbstractionObserver]: Analyzing ICFG min-le-max.wvr.bpl [2022-03-15 22:11:18,382 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 22:11:18,382 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 22:11:18,382 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 22:11:18,382 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 22:11:18,405 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 22:11:18,432 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 22:11:18,437 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 22:11:18,438 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 22:11:18,444 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 22:11:18,451 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 26 transitions, 76 flow [2022-03-15 22:11:18,453 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 26 transitions, 76 flow [2022-03-15 22:11:18,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 26 transitions, 76 flow [2022-03-15 22:11:18,469 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2022-03-15 22:11:18,469 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-03-15 22:11:18,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 2/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2022-03-15 22:11:18,480 INFO L116 LiptonReduction]: Number of co-enabled transitions 138 [2022-03-15 22:11:18,675 INFO L131 LiptonReduction]: Checked pairs total: 147 [2022-03-15 22:11:18,675 INFO L133 LiptonReduction]: Total number of compositions: 10 [2022-03-15 22:11:18,682 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 17 transitions, 58 flow [2022-03-15 22:11:18,697 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 22:11:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 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 22:11:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 22:11:18,710 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:11:18,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:11:18,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 22:11:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:11:18,714 INFO L85 PathProgramCache]: Analyzing trace with hash -621838780, now seen corresponding path program 1 times [2022-03-15 22:11:18,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:11:18,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320182321] [2022-03-15 22:11:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:11:18,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:11:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:11:18,840 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 22:11:18,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:11:18,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320182321] [2022-03-15 22:11:18,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320182321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 22:11:18,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 22:11:18,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 22:11:18,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [146662889] [2022-03-15 22:11:18,842 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:11:18,845 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:11:18,877 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2022-03-15 22:11:18,877 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:11:19,029 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 22:11:19,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 22:11:19,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:11:19,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 22:11:19,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 22:11:19,051 INFO L87 Difference]: Start difference. First operand has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 22:11:19,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:11:19,112 INFO L93 Difference]: Finished difference Result 53 states and 117 transitions. [2022-03-15 22:11:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 22:11:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 11 [2022-03-15 22:11:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:11:19,123 INFO L225 Difference]: With dead ends: 53 [2022-03-15 22:11:19,124 INFO L226 Difference]: Without dead ends: 33 [2022-03-15 22:11:19,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 22:11:19,131 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 22:11:19,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 22:11:19,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-15 22:11:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-15 22:11:19,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 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 22:11:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 74 transitions. [2022-03-15 22:11:19,159 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 74 transitions. Word has length 11 [2022-03-15 22:11:19,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:11:19,160 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 74 transitions. [2022-03-15 22:11:19,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 22:11:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 74 transitions. [2022-03-15 22:11:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 22:11:19,162 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:11:19,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:11:19,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 22:11:19,162 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 22:11:19,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:11:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1638755486, now seen corresponding path program 1 times [2022-03-15 22:11:19,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:11:19,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952667887] [2022-03-15 22:11:19,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:11:19,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:11:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:11:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:11:19,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:11:19,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952667887] [2022-03-15 22:11:19,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952667887] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:11:19,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165202238] [2022-03-15 22:11:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:11:19,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:11:19,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:11:19,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 22:11:19,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 22:11:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:11:19,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 22:11:19,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:11:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:11:19,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:11:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:11:19,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165202238] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:11:19,310 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:11:19,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-03-15 22:11:19,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [372438657] [2022-03-15 22:11:19,310 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:11:19,311 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:11:19,313 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 48 transitions. [2022-03-15 22:11:19,313 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:11:19,498 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [281#(< i N), 282#(or (<= N i) (< (+ i 1) N)), 283#(or (<= (+ j 1) N) (<= N i)), 284#(or (<= (+ j 1) N) (< i N))] [2022-03-15 22:11:19,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 22:11:19,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:11:19,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 22:11:19,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-15 22:11:19,500 INFO L87 Difference]: Start difference. First operand 33 states and 74 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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 22:11:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:11:19,657 INFO L93 Difference]: Finished difference Result 95 states and 194 transitions. [2022-03-15 22:11:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 22:11:19,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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 12 [2022-03-15 22:11:19,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:11:19,658 INFO L225 Difference]: With dead ends: 95 [2022-03-15 22:11:19,658 INFO L226 Difference]: Without dead ends: 95 [2022-03-15 22:11:19,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-03-15 22:11:19,660 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 54 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 22:11:19,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 22:11:19,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-03-15 22:11:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 47. [2022-03-15 22:11:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 2.4130434782608696) internal successors, (111), 46 states have internal predecessors, (111), 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 22:11:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 111 transitions. [2022-03-15 22:11:19,667 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 111 transitions. Word has length 12 [2022-03-15 22:11:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:11:19,667 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 111 transitions. [2022-03-15 22:11:19,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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 22:11:19,667 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 111 transitions. [2022-03-15 22:11:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 22:11:19,668 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:11:19,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:11:19,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-15 22:11:19,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:11:19,885 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 22:11:19,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:11:19,885 INFO L85 PathProgramCache]: Analyzing trace with hash 314741569, now seen corresponding path program 1 times [2022-03-15 22:11:19,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:11:19,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907160425] [2022-03-15 22:11:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:11:19,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:11:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:11:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:11:19,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:11:19,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907160425] [2022-03-15 22:11:19,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907160425] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:11:19,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034205170] [2022-03-15 22:11:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:11:19,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:11:19,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:11:19,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 22:11:19,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 22:11:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:11:20,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 22:11:20,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:11:20,078 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 22:11:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:11:20,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:11:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:11:20,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034205170] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 22:11:20,252 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 22:11:20,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-03-15 22:11:20,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [950723672] [2022-03-15 22:11:20,253 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:11:20,254 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:11:20,256 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 63 transitions. [2022-03-15 22:11:20,256 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:11:20,766 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [568#(and (or (<= min max) (<= (select A i) min)) (or (<= (select A i) max) (< min (select A i))))] [2022-03-15 22:11:20,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 22:11:20,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:11:20,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 22:11:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-03-15 22:11:20,767 INFO L87 Difference]: Start difference. First operand 47 states and 111 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 22:11:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:11:20,796 INFO L93 Difference]: Finished difference Result 46 states and 110 transitions. [2022-03-15 22:11:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 22:11:20,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 13 [2022-03-15 22:11:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:11:20,797 INFO L225 Difference]: With dead ends: 46 [2022-03-15 22:11:20,797 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 22:11:20,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-03-15 22:11:20,799 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 22:11:20,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 22:11:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 22:11:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 22:11:20,805 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 22:11:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 22:11:20,805 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-03-15 22:11:20,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:11:20,805 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 22:11:20,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 22:11:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 22:11:20,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 22:11:20,807 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-15 22:11:20,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-15 22:11:20,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-15 22:11:20,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-15 22:11:20,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 22:11:21,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-15 22:11:21,027 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-15 22:11:21,029 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 22:11:21,029 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 22:11:21,030 INFO L202 PluginConnector]: Adding new model min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 10:11:21 BasicIcfg [2022-03-15 22:11:21,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 22:11:21,032 INFO L158 Benchmark]: Toolchain (without parser) took 2855.26ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 167.6MB in the beginning and 163.6MB in the end (delta: 3.9MB). Peak memory consumption was 46.9MB. Max. memory is 8.0GB. [2022-03-15 22:11:21,032 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 202.4MB. Free memory was 168.7MB in the beginning and 168.5MB in the end (delta: 147.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 22:11:21,032 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.01ms. Allocated memory is still 202.4MB. Free memory was 167.4MB in the beginning and 166.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 22:11:21,032 INFO L158 Benchmark]: Boogie Preprocessor took 9.86ms. Allocated memory is still 202.4MB. Free memory was 165.8MB in the beginning and 165.0MB in the end (delta: 815.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 22:11:21,033 INFO L158 Benchmark]: RCFGBuilder took 161.90ms. Allocated memory is still 202.4MB. Free memory was 164.9MB in the beginning and 155.9MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-15 22:11:21,033 INFO L158 Benchmark]: TraceAbstraction took 2657.52ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 155.5MB in the beginning and 163.6MB in the end (delta: -8.1MB). Peak memory consumption was 34.3MB. Max. memory is 8.0GB. [2022-03-15 22:11:21,034 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 202.4MB. Free memory was 168.7MB in the beginning and 168.5MB in the end (delta: 147.1kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.01ms. Allocated memory is still 202.4MB. Free memory was 167.4MB in the beginning and 166.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.86ms. Allocated memory is still 202.4MB. Free memory was 165.8MB in the beginning and 165.0MB in the end (delta: 815.6kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 161.90ms. Allocated memory is still 202.4MB. Free memory was 164.9MB in the beginning and 155.9MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2657.52ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 155.5MB in the beginning and 163.6MB in the end (delta: -8.1MB). Peak memory consumption was 34.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 34 PlacesBefore, 25 PlacesAfterwards, 26 TransitionsBefore, 17 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 147 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 131, positive: 126, positive conditional: 0, positive unconditional: 126, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 77, positive: 73, positive conditional: 0, positive unconditional: 73, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 131, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 77, unknown conditional: 0, unknown unconditional: 77] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - 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: 52]: 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, 41 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 108 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 248 IncrementalHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 3 mSDtfsCounter, 248 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 72 SyntacticMatches, 15 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=2, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 48 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 527 SizeOfPredicates, 4 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 2/9 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 22:11:21,055 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...