/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/unroll-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:46:14,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:46:14,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:46:14,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 20:46:14,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:46:14,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:46:14,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:46:14,645 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 20:46:14,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:46:14,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:46:14,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:46:14,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:46:14,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:46:14,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:46:14,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:46:14,663 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:46:14,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:46:14,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:46:14,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:46:14,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:46:14,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:46:14,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:46:14,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:46:14,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:46:14,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:46:14,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:46:14,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:46:14,664 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:46:14,664 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:46:14,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:46:14,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:46:14,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:46:14,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:46:14,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:46:14,885 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 20:46:14,886 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 20:46:14,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-5.wvr.bpl [2022-03-15 20:46:14,890 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-5.wvr.bpl' [2022-03-15 20:46:14,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:46:14,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 20:46:14,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:46:14,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:46:14,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:46:14,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/1) ... [2022-03-15 20:46:14,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/1) ... [2022-03-15 20:46:14,936 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 20:46:14,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:46:14,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:46:14,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:46:14,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:46:14,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/1) ... [2022-03-15 20:46:14,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/1) ... [2022-03-15 20:46:14,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/1) ... [2022-03-15 20:46:14,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/1) ... [2022-03-15 20:46:14,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/1) ... [2022-03-15 20:46:14,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/1) ... [2022-03-15 20:46:14,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/1) ... [2022-03-15 20:46:14,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:46:14,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:46:14,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:46:14,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:46:14,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/1) ... [2022-03-15 20:46:14,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:46:14,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:46:14,982 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 20:46:14,997 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 20:46:15,023 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 20:46:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 20:46:15,024 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 20:46:15,024 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 20:46:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 20:46:15,024 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 20:46:15,024 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 20:46:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:46:15,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:46:15,025 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 20:46:15,055 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:46:15,056 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:46:15,164 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:46:15,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:46:15,205 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 20:46:15,206 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-03-15 20:46:15,206 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2022-03-15 20:46:15,211 INFO L202 PluginConnector]: Adding new model unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:46:15 BoogieIcfgContainer [2022-03-15 20:46:15,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:46:15,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:46:15,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:46:15,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:46:15,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:46:14" (1/2) ... [2022-03-15 20:46:15,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4704904c and model type unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:46:15, skipping insertion in model container [2022-03-15 20:46:15,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:46:15" (2/2) ... [2022-03-15 20:46:15,219 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.bpl [2022-03-15 20:46:15,222 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:46:15,223 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:46:15,223 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 20:46:15,223 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:46:15,267 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 20:46:15,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:46:15,340 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 20:46:15,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 20:46:15,346 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:46:15,355 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 15 transitions, 46 flow [2022-03-15 20:46:15,357 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 15 transitions, 46 flow [2022-03-15 20:46:15,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 46 flow [2022-03-15 20:46:15,385 INFO L129 PetriNetUnfolder]: 2/13 cut-off events. [2022-03-15 20:46:15,385 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 20:46:15,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 13 events. 2/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 8. Up to 2 conditions per place. [2022-03-15 20:46:15,387 INFO L116 LiptonReduction]: Number of co-enabled transitions 16 [2022-03-15 20:46:15,426 INFO L131 LiptonReduction]: Checked pairs total: 18 [2022-03-15 20:46:15,427 INFO L133 LiptonReduction]: Total number of compositions: 3 [2022-03-15 20:46:15,436 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 13 transitions, 42 flow [2022-03-15 20:46:15,447 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 20:46:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 20:46:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 20:46:15,455 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:15,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:15,456 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:15,462 INFO L85 PathProgramCache]: Analyzing trace with hash -223087929, now seen corresponding path program 1 times [2022-03-15 20:46:15,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:15,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579626975] [2022-03-15 20:46:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:15,561 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 20:46:15,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:15,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579626975] [2022-03-15 20:46:15,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579626975] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:46:15,562 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:46:15,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 20:46:15,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [711522304] [2022-03-15 20:46:15,563 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:46:15,565 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:46:15,593 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 14 transitions. [2022-03-15 20:46:15,593 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:46:15,697 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:46:15,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:46:15,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:46:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:46:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:46:15,734 INFO L87 Difference]: Start difference. First operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 20:46:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:46:15,774 INFO L93 Difference]: Finished difference Result 21 states and 37 transitions. [2022-03-15 20:46:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:46:15,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-03-15 20:46:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:46:15,794 INFO L225 Difference]: With dead ends: 21 [2022-03-15 20:46:15,795 INFO L226 Difference]: Without dead ends: 18 [2022-03-15 20:46:15,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 20:46:15,813 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:46:15,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:46:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-03-15 20:46:15,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-03-15 20:46:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 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 20:46:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 32 transitions. [2022-03-15 20:46:15,853 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 32 transitions. Word has length 8 [2022-03-15 20:46:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:46:15,854 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 32 transitions. [2022-03-15 20:46:15,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 20:46:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 32 transitions. [2022-03-15 20:46:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 20:46:15,854 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:15,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:15,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 20:46:15,855 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:15,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1674231866, now seen corresponding path program 1 times [2022-03-15 20:46:15,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:15,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331384940] [2022-03-15 20:46:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:15,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:15,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:15,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331384940] [2022-03-15 20:46:15,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331384940] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:46:15,914 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:46:15,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:46:15,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2042768796] [2022-03-15 20:46:15,915 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:46:15,916 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:46:15,918 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2022-03-15 20:46:15,918 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:46:15,975 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [111#(< i1 (* 5 n))] [2022-03-15 20:46:15,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 20:46:15,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:46:15,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 20:46:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 20:46:15,977 INFO L87 Difference]: Start difference. First operand 18 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:46:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:46:16,058 INFO L93 Difference]: Finished difference Result 20 states and 33 transitions. [2022-03-15 20:46:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 20:46:16,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-03-15 20:46:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:46:16,059 INFO L225 Difference]: With dead ends: 20 [2022-03-15 20:46:16,059 INFO L226 Difference]: Without dead ends: 16 [2022-03-15 20:46:16,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-15 20:46:16,060 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:46:16,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:46:16,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-15 20:46:16,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-15 20:46:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 20:46:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 28 transitions. [2022-03-15 20:46:16,063 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 28 transitions. Word has length 9 [2022-03-15 20:46:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:46:16,063 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 28 transitions. [2022-03-15 20:46:16,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:46:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 28 transitions. [2022-03-15 20:46:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 20:46:16,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:16,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:16,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 20:46:16,064 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:16,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:16,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1695621804, now seen corresponding path program 1 times [2022-03-15 20:46:16,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:16,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335655463] [2022-03-15 20:46:16,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:16,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:16,115 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 20:46:16,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:16,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335655463] [2022-03-15 20:46:16,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335655463] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:46:16,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420030495] [2022-03-15 20:46:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:16,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:16,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:46:16,132 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 20:46:16,155 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 20:46:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:16,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 20:46:16,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:46:16,210 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 20:46:16,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:46:16,242 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 20:46:16,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420030495] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:46:16,243 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:46:16,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-03-15 20:46:16,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [562127612] [2022-03-15 20:46:16,243 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:46:16,243 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:46:16,245 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2022-03-15 20:46:16,245 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:46:16,286 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [222#(< i1 (* 5 n)), 223#(or (< (+ i1 1) (* 5 n)) (<= (* 5 n) i1))] [2022-03-15 20:46:16,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 20:46:16,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:46:16,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 20:46:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 20:46:16,287 INFO L87 Difference]: Start difference. First operand 16 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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 20:46:16,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:46:16,386 INFO L93 Difference]: Finished difference Result 23 states and 42 transitions. [2022-03-15 20:46:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 20:46:16,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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 9 [2022-03-15 20:46:16,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:46:16,387 INFO L225 Difference]: With dead ends: 23 [2022-03-15 20:46:16,387 INFO L226 Difference]: Without dead ends: 23 [2022-03-15 20:46:16,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-15 20:46:16,388 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 17 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:46:16,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:46:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-15 20:46:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-15 20:46:16,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 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 20:46:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 42 transitions. [2022-03-15 20:46:16,391 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 42 transitions. Word has length 9 [2022-03-15 20:46:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:46:16,392 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 42 transitions. [2022-03-15 20:46:16,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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 20:46:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 42 transitions. [2022-03-15 20:46:16,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 20:46:16,392 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:16,392 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:16,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 20:46:16,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:16,604 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:16,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1931192422, now seen corresponding path program 1 times [2022-03-15 20:46:16,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:16,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624798952] [2022-03-15 20:46:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:16,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 20:46:16,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:16,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624798952] [2022-03-15 20:46:16,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624798952] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:46:16,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854861946] [2022-03-15 20:46:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:16,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:16,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:46:16,721 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 20:46:16,722 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 20:46:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:16,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 20:46:16,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:46:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 20:46:16,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:46:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 20:46:16,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854861946] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:46:16,881 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:46:16,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-03-15 20:46:16,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1252766213] [2022-03-15 20:46:16,881 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:46:16,882 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:46:16,886 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2022-03-15 20:46:16,887 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:46:17,082 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [370#(or (< (+ i1 1) (* 5 n)) (<= (* 5 n) i1)), 371#(or (<= (* 5 n) (+ i1 1)) (< (+ 2 i1) (* 5 n))), 355#(< i1 (* 5 n))] [2022-03-15 20:46:17,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 20:46:17,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:46:17,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 20:46:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-15 20:46:17,085 INFO L87 Difference]: Start difference. First operand 23 states and 42 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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 20:46:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:46:17,163 INFO L93 Difference]: Finished difference Result 35 states and 66 transitions. [2022-03-15 20:46:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 20:46:17,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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 20:46:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:46:17,164 INFO L225 Difference]: With dead ends: 35 [2022-03-15 20:46:17,164 INFO L226 Difference]: Without dead ends: 35 [2022-03-15 20:46:17,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-15 20:46:17,165 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 37 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:46:17,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 1 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:46:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-15 20:46:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-15 20:46:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 34 states have internal predecessors, (66), 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 20:46:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 66 transitions. [2022-03-15 20:46:17,169 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 66 transitions. Word has length 11 [2022-03-15 20:46:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:46:17,169 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 66 transitions. [2022-03-15 20:46:17,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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 20:46:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 66 transitions. [2022-03-15 20:46:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 20:46:17,170 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:17,170 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:17,186 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 20:46:17,373 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,SelfDestructingSolverStorable3 [2022-03-15 20:46:17,373 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:17,374 INFO L85 PathProgramCache]: Analyzing trace with hash 272862773, now seen corresponding path program 2 times [2022-03-15 20:46:17,377 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:17,377 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271083210] [2022-03-15 20:46:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:17,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:17,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:17,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271083210] [2022-03-15 20:46:17,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271083210] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:46:17,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067581588] [2022-03-15 20:46:17,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 20:46:17,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:17,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:46:17,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:46:17,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 20:46:17,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 20:46:17,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:46:17,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 20:46:17,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:46:17,652 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 20:46:17,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 27 treesize of output 99 [2022-03-15 20:46:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:17,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:46:18,302 INFO L353 Elim1Store]: treesize reduction 25, result has 93.1 percent of original size [2022-03-15 20:46:18,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 23 treesize of output 371 [2022-03-15 20:46:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:26,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067581588] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:46:26,926 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:46:26,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 16 [2022-03-15 20:46:26,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1050115285] [2022-03-15 20:46:26,927 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:46:26,928 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:46:26,930 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2022-03-15 20:46:26,930 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:46:27,108 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [579#(= (select f (select f (select f x1))) x2), 577#(= (select f x1) x2), 581#(= (select f (select f (select f (select f (select f x1))))) x2), 578#(= (select f (select f x1)) x2), 580#(= (select f (select f (select f (select f x1)))) x2)] [2022-03-15 20:46:27,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 20:46:27,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:46:27,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 20:46:27,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-03-15 20:46:27,109 INFO L87 Difference]: Start difference. First operand 35 states and 66 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 20:46:27,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:46:27,401 INFO L93 Difference]: Finished difference Result 137 states and 249 transitions. [2022-03-15 20:46:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 20:46:27,402 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 20:46:27,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:46:27,403 INFO L225 Difference]: With dead ends: 137 [2022-03-15 20:46:27,403 INFO L226 Difference]: Without dead ends: 134 [2022-03-15 20:46:27,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-03-15 20:46:27,404 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 43 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 20:46:27,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 1 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 20:46:27,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-03-15 20:46:27,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 64. [2022-03-15 20:46:27,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.3968253968253967) internal successors, (151), 63 states have internal predecessors, (151), 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 20:46:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2022-03-15 20:46:27,410 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 14 [2022-03-15 20:46:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:46:27,410 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2022-03-15 20:46:27,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 20:46:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2022-03-15 20:46:27,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 20:46:27,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:27,411 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:27,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-15 20:46:27,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:27,628 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:27,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:27,628 INFO L85 PathProgramCache]: Analyzing trace with hash -131165556, now seen corresponding path program 3 times [2022-03-15 20:46:27,630 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:27,630 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681211428] [2022-03-15 20:46:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:27,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:27,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681211428] [2022-03-15 20:46:27,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681211428] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:46:27,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548881208] [2022-03-15 20:46:27,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 20:46:27,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:27,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:46:27,704 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:46:27,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 20:46:27,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 20:46:27,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:46:27,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 20:46:27,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:46:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:27,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:46:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:27,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548881208] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:46:27,883 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:46:27,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-15 20:46:27,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [30441549] [2022-03-15 20:46:27,883 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:46:27,884 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:46:27,888 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 69 transitions. [2022-03-15 20:46:27,888 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:46:28,195 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 12 new interpolants: [951#(or (<= (* 5 n) (+ 2 i1)) (< (+ 3 i1) (* 5 n))), 955#(or (< (+ i1 1) (* 5 n)) (<= (* 5 n) i2) (<= (* 5 n) i1)), 956#(or (<= (* 5 n) (+ i1 1)) (< (+ 2 i1) (* 5 n)) (<= (* 5 n) i2)), 948#(< i1 (* 5 n)), 952#(or (<= (* 5 n) (+ 3 i1)) (< (+ i1 4) (* 5 n))), 958#(or (<= (* 5 n) (+ 3 i1)) (< (+ i1 4) (* 5 n)) (<= (* 5 n) i2)), 957#(or (<= (* 5 n) (+ 2 i1)) (< (+ 3 i1) (* 5 n)) (<= (* 5 n) i2)), 954#(or (< i1 (* 5 n)) (<= (* 5 n) i2)), 953#(or (<= (* 5 n) (+ i1 4)) (< (+ 5 i1) (* 5 n))), 949#(or (< (+ i1 1) (* 5 n)) (<= (* 5 n) i1)), 950#(or (<= (* 5 n) (+ i1 1)) (< (+ 2 i1) (* 5 n))), 959#(or (<= (* 5 n) (+ i1 4)) (< (+ 5 i1) (* 5 n)) (<= (* 5 n) i2))] [2022-03-15 20:46:28,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 20:46:28,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:46:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 20:46:28,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2022-03-15 20:46:28,196 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 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 20:46:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:46:30,050 INFO L93 Difference]: Finished difference Result 333 states and 870 transitions. [2022-03-15 20:46:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-15 20:46:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 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) Word has length 15 [2022-03-15 20:46:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:46:30,055 INFO L225 Difference]: With dead ends: 333 [2022-03-15 20:46:30,055 INFO L226 Difference]: Without dead ends: 318 [2022-03-15 20:46:30,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4617 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3135, Invalid=9075, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 20:46:30,059 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 200 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 20:46:30,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 20:46:30,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-03-15 20:46:30,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 202. [2022-03-15 20:46:30,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 3.1592039800995027) internal successors, (635), 201 states have internal predecessors, (635), 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 20:46:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 635 transitions. [2022-03-15 20:46:30,086 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 635 transitions. Word has length 15 [2022-03-15 20:46:30,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:46:30,086 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 635 transitions. [2022-03-15 20:46:30,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 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 20:46:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 635 transitions. [2022-03-15 20:46:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 20:46:30,088 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:30,088 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:30,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 20:46:30,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:30,289 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:30,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash 531922522, now seen corresponding path program 4 times [2022-03-15 20:46:30,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:30,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182249662] [2022-03-15 20:46:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:30,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:30,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:30,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182249662] [2022-03-15 20:46:30,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182249662] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:46:30,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559661428] [2022-03-15 20:46:30,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 20:46:30,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:30,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:46:30,364 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:46:30,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 20:46:30,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 20:46:30,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:46:30,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 20:46:30,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:46:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:30,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:46:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:30,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559661428] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:46:30,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:46:30,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-15 20:46:30,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [403950530] [2022-03-15 20:46:30,512 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:46:30,513 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:46:30,516 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 61 transitions. [2022-03-15 20:46:30,516 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:46:30,818 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 14 new interpolants: [1966#(or (<= (* 5 n) (+ 3 i1)) (< (+ i1 4) (* 5 n))), 1968#(or (< i1 (* 5 n)) (< i2 (* 5 n))), 1970#(or (<= (* 5 n) (+ i1 1)) (< (+ 2 i1) (* 5 n)) (< i2 (* 5 n))), 1967#(or (<= (* 5 n) (+ i1 4)) (< (+ 5 i1) (* 5 n))), 1969#(or (< (+ i1 1) (* 5 n)) (<= (* 5 n) i1) (< i2 (* 5 n))), 1974#(or (<= (* 5 n) (+ 5 i1)) (< (+ 6 i1) (* 5 n))), 1972#(or (<= (* 5 n) (+ 3 i1)) (< (+ i1 4) (* 5 n)) (< i2 (* 5 n))), 1964#(or (<= (* 5 n) (+ i1 1)) (< (+ 2 i1) (* 5 n))), 1965#(or (<= (* 5 n) (+ 2 i1)) (< (+ 3 i1) (* 5 n))), 1975#(or (<= (* 5 n) (+ 5 i1)) (< (+ 6 i1) (* 5 n)) (< i2 (* 5 n))), 1971#(or (<= (* 5 n) (+ 2 i1)) (< (+ 3 i1) (* 5 n)) (< i2 (* 5 n))), 1973#(or (<= (* 5 n) (+ i1 4)) (< (+ 5 i1) (* 5 n)) (< i2 (* 5 n))), 1962#(< i1 (* 5 n)), 1963#(or (< (+ i1 1) (* 5 n)) (<= (* 5 n) i1))] [2022-03-15 20:46:30,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 20:46:30,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:46:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 20:46:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2022-03-15 20:46:30,819 INFO L87 Difference]: Start difference. First operand 202 states and 635 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 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 20:46:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:46:32,415 INFO L93 Difference]: Finished difference Result 407 states and 1157 transitions. [2022-03-15 20:46:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-15 20:46:32,416 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 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 15 [2022-03-15 20:46:32,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:46:32,418 INFO L225 Difference]: With dead ends: 407 [2022-03-15 20:46:32,418 INFO L226 Difference]: Without dead ends: 407 [2022-03-15 20:46:32,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2493 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1468, Invalid=6904, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 20:46:32,420 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 294 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 20:46:32,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 20:46:32,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-03-15 20:46:32,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 239. [2022-03-15 20:46:32,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 3.130252100840336) internal successors, (745), 238 states have internal predecessors, (745), 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 20:46:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 745 transitions. [2022-03-15 20:46:32,435 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 745 transitions. Word has length 15 [2022-03-15 20:46:32,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:46:32,435 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 745 transitions. [2022-03-15 20:46:32,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 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 20:46:32,435 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 745 transitions. [2022-03-15 20:46:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 20:46:32,440 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:32,440 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:32,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 20:46:32,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:32,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:32,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash -592575927, now seen corresponding path program 5 times [2022-03-15 20:46:32,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:32,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649487279] [2022-03-15 20:46:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:32,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:32,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:32,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649487279] [2022-03-15 20:46:32,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649487279] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:46:32,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793210293] [2022-03-15 20:46:32,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 20:46:32,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:32,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:46:32,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:46:32,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 20:46:32,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-15 20:46:32,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:46:32,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 20:46:32,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:46:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:32,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:46:32,941 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:32,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793210293] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:46:32,941 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:46:32,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2022-03-15 20:46:32,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1197815057] [2022-03-15 20:46:32,942 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:46:32,943 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:46:32,947 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 68 transitions. [2022-03-15 20:46:32,948 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:46:33,376 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 15 new interpolants: [3102#(or (<= (* 5 n) (+ 3 i1)) (< (+ i1 4) (* 5 n))), 3096#(or (<= (* 5 n) i2) (<= (+ 3 i2) i1)), 3103#(or (<= (* 5 n) (+ i1 4)) (< (+ 5 i1) (* 5 n))), 3092#(or (<= (+ 7 i2) (* 5 n)) (<= (* 5 n) i2)), 3101#(or (<= (* 5 n) (+ 2 i1)) (< (+ 3 i1) (* 5 n))), 3097#(or (<= (* 5 n) i2) (<= (+ 2 i2) i1)), 3105#(or (< (+ 7 i1) (* 5 n)) (<= (* 5 n) (+ 6 i1))), 3104#(or (<= (* 5 n) (+ 5 i1)) (< (+ 6 i1) (* 5 n))), 3106#(or (<= (* 5 n) i2) (<= (+ i2 1) i1)), 3099#(or (< (+ i1 1) (* 5 n)) (<= (* 5 n) i1)), 3100#(or (<= (* 5 n) (+ i1 1)) (< (+ 2 i1) (* 5 n))), 3095#(or (<= (+ i2 4) i1) (<= (* 5 n) i2)), 3093#(or (<= (+ 6 i2) i1) (<= (* 5 n) i2)), 3094#(or (<= (+ 5 i2) i1) (<= (* 5 n) i2)), 3098#(< i1 (* 5 n))] [2022-03-15 20:46:33,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 20:46:33,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:46:33,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 20:46:33,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 20:46:33,377 INFO L87 Difference]: Start difference. First operand 239 states and 745 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 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 20:46:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:46:37,596 INFO L93 Difference]: Finished difference Result 680 states and 1583 transitions. [2022-03-15 20:46:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-03-15 20:46:37,596 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 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 16 [2022-03-15 20:46:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:46:37,599 INFO L225 Difference]: With dead ends: 680 [2022-03-15 20:46:37,599 INFO L226 Difference]: Without dead ends: 680 [2022-03-15 20:46:37,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8173 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4017, Invalid=19853, Unknown=0, NotChecked=0, Total=23870 [2022-03-15 20:46:37,604 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 378 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 20:46:37,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 1 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 20:46:37,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-03-15 20:46:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 281. [2022-03-15 20:46:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 2.882142857142857) internal successors, (807), 280 states have internal predecessors, (807), 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 20:46:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 807 transitions. [2022-03-15 20:46:37,613 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 807 transitions. Word has length 16 [2022-03-15 20:46:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:46:37,613 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 807 transitions. [2022-03-15 20:46:37,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 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 20:46:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 807 transitions. [2022-03-15 20:46:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 20:46:37,614 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:37,614 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:37,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 20:46:37,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:37,832 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:37,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:37,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1461283590, now seen corresponding path program 6 times [2022-03-15 20:46:37,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:37,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617085720] [2022-03-15 20:46:37,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:37,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:37,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:37,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617085720] [2022-03-15 20:46:37,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617085720] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:46:37,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347790281] [2022-03-15 20:46:37,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 20:46:37,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:37,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:46:37,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:46:37,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 20:46:37,975 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 20:46:37,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:46:37,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 20:46:37,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:46:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 20:46:38,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:46:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 20:46:38,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347790281] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:46:38,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:46:38,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 14 [2022-03-15 20:46:38,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1011353413] [2022-03-15 20:46:38,068 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:46:38,069 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:46:38,073 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 75 transitions. [2022-03-15 20:46:38,073 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:46:38,563 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 16 new interpolants: [4702#(< i2 (* 5 n)), 4706#(or (<= (* 5 n) (+ i1 1)) (< i2 (* 5 n))), 4708#(or (< (+ 5 i2) (* 5 n)) (<= (* 5 n) i2)), 4717#(or (<= (* 5 n) (+ i1 4)) (< (+ 5 i2) (* 5 n)) (<= (* 5 n) i2)), 4711#(or (< (+ 5 i2) (* 5 n)) (<= (* 5 n) i2) (<= (* 5 n) i1)), 4714#(or (<= (* 5 n) (+ 3 i1)) (< i2 (* 5 n))), 4707#(or (<= (* 5 n) (+ 2 i1)) (< i2 (* 5 n))), 4704#(or (<= (+ (* 5 n) 1) i1) (< i2 (* 5 n))), 4712#(or (<= (* 5 n) (+ i1 1)) (< (+ 5 i2) (* 5 n)) (<= (* 5 n) i2)), 4713#(or (< (+ 5 i2) (* 5 n)) (<= (* 5 n) (+ 2 i1)) (<= (* 5 n) i2)), 4705#(or (<= (* 5 n) i1) (< i2 (* 5 n))), 4710#(or (<= (+ (* 5 n) 1) i1) (< (+ 5 i2) (* 5 n)) (<= (* 5 n) i2)), 4716#(or (<= (* 5 n) (+ 3 i1)) (< (+ 5 i2) (* 5 n)) (<= (* 5 n) i2)), 4709#(or (< (+ 5 i2) (* 5 n)) (<= (+ 2 (* 5 n)) i1) (<= (* 5 n) i2)), 4715#(or (<= (* 5 n) (+ i1 4)) (< i2 (* 5 n))), 4703#(or (<= (+ 2 (* 5 n)) i1) (< i2 (* 5 n)))] [2022-03-15 20:46:38,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-15 20:46:38,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:46:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-15 20:46:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2022-03-15 20:46:38,564 INFO L87 Difference]: Start difference. First operand 281 states and 807 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 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 20:46:39,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:46:39,083 INFO L93 Difference]: Finished difference Result 354 states and 913 transitions. [2022-03-15 20:46:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 20:46:39,083 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 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 17 [2022-03-15 20:46:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:46:39,085 INFO L225 Difference]: With dead ends: 354 [2022-03-15 20:46:39,085 INFO L226 Difference]: Without dead ends: 318 [2022-03-15 20:46:39,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=811, Invalid=2381, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 20:46:39,087 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 95 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 20:46:39,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 20:46:39,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-03-15 20:46:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 281. [2022-03-15 20:46:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 2.807142857142857) internal successors, (786), 280 states have internal predecessors, (786), 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 20:46:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 786 transitions. [2022-03-15 20:46:39,096 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 786 transitions. Word has length 17 [2022-03-15 20:46:39,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:46:39,096 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 786 transitions. [2022-03-15 20:46:39,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 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 20:46:39,096 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 786 transitions. [2022-03-15 20:46:39,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 20:46:39,097 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:39,097 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:39,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-15 20:46:39,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:39,304 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:39,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1249180761, now seen corresponding path program 7 times [2022-03-15 20:46:39,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:39,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326760623] [2022-03-15 20:46:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:39,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 20:46:39,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:39,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326760623] [2022-03-15 20:46:39,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326760623] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:46:39,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848015106] [2022-03-15 20:46:39,461 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 20:46:39,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:39,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:46:39,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:46:39,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 20:46:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:39,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 20:46:39,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:46:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 20:46:39,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:46:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 20:46:39,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848015106] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 20:46:39,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 20:46:39,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2022-03-15 20:46:39,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1858794449] [2022-03-15 20:46:39,692 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:46:39,693 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:46:39,697 INFO L252 McrAutomatonBuilder]: Finished intersection with 58 states and 96 transitions. [2022-03-15 20:46:39,698 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:46:40,135 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [5821#(or (< (+ i1 8) (* 5 n)) (<= (* 5 n) (+ 7 i1))), 5776#(< i1 (* 5 n)), 5814#(or (< (+ i1 1) (* 5 n)) (<= (* 5 n) i1)), 5820#(or (< (+ 7 i1) (* 5 n)) (<= (* 5 n) (+ 6 i1))), 5817#(or (<= (* 5 n) (+ 3 i1)) (< (+ i1 4) (* 5 n))), 5819#(or (<= (* 5 n) (+ 5 i1)) (< (+ 6 i1) (* 5 n))), 5818#(or (<= (* 5 n) (+ i1 4)) (< (+ 5 i1) (* 5 n))), 5816#(or (<= (* 5 n) (+ 2 i1)) (< (+ 3 i1) (* 5 n))), 5815#(or (<= (* 5 n) (+ i1 1)) (< (+ 2 i1) (* 5 n)))] [2022-03-15 20:46:40,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 20:46:40,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:46:40,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 20:46:40,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 20:46:40,136 INFO L87 Difference]: Start difference. First operand 281 states and 786 transitions. Second operand has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 states have internal predecessors, (62), 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 20:46:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:46:40,424 INFO L93 Difference]: Finished difference Result 548 states and 1452 transitions. [2022-03-15 20:46:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 20:46:40,425 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 20:46:40,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:46:40,427 INFO L225 Difference]: With dead ends: 548 [2022-03-15 20:46:40,427 INFO L226 Difference]: Without dead ends: 548 [2022-03-15 20:46:40,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=1233, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 20:46:40,428 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 110 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:46:40,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:46:40,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-03-15 20:46:40,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 316. [2022-03-15 20:46:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 2.673015873015873) internal successors, (842), 315 states have internal predecessors, (842), 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 20:46:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 842 transitions. [2022-03-15 20:46:40,437 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 842 transitions. Word has length 18 [2022-03-15 20:46:40,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:46:40,437 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 842 transitions. [2022-03-15 20:46:40,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 states have internal predecessors, (62), 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 20:46:40,437 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 842 transitions. [2022-03-15 20:46:40,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 20:46:40,438 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:46:40,438 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:46:40,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 20:46:40,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-15 20:46:40,652 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 20:46:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:46:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1512720313, now seen corresponding path program 8 times [2022-03-15 20:46:40,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:46:40,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65395889] [2022-03-15 20:46:40,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:46:40,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:46:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:46:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:40,749 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:46:40,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65395889] [2022-03-15 20:46:40,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65395889] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 20:46:40,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543241907] [2022-03-15 20:46:40,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 20:46:40,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 20:46:40,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:46:40,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 20:46:40,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 20:46:40,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 20:46:40,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 20:46:40,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 20:46:40,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 20:46:41,123 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 20:46:41,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 19 new quantified variables, introduced 45 case distinctions, treesize of input 47 treesize of output 394 [2022-03-15 20:46:53,064 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:46:53,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 20:46:55,722 INFO L353 Elim1Store]: treesize reduction 50, result has 96.7 percent of original size [2022-03-15 20:46:55,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 38 new quantified variables, introduced 190 case distinctions, treesize of input 43 treesize of output 1546 Received shutdown request... [2022-03-15 21:00:40,497 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-03-15 21:00:40,499 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-15 21:00:40,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-15 21:00:40,536 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 21:00:40,536 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 21:00:40,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:00:40,706 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 8ms.. [2022-03-15 21:00:40,707 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 21:00:40,707 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 21:00:40,709 INFO L732 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-03-15 21:00:40,710 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 21:00:40,710 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 21:00:40,711 INFO L202 PluginConnector]: Adding new model unroll-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 09:00:40 BasicIcfg [2022-03-15 21:00:40,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 21:00:40,712 INFO L158 Benchmark]: Toolchain (without parser) took 865795.43ms. Allocated memory was 197.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 160.7MB in the beginning and 1.1GB in the end (delta: -951.7MB). Peak memory consumption was 792.7MB. Max. memory is 8.0GB. [2022-03-15 21:00:40,712 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.21ms. Allocated memory is still 197.1MB. Free memory is still 161.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 21:00:40,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.16ms. Allocated memory is still 197.1MB. Free memory was 160.6MB in the beginning and 159.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 21:00:40,712 INFO L158 Benchmark]: Boogie Preprocessor took 15.71ms. Allocated memory is still 197.1MB. Free memory was 159.1MB in the beginning and 158.2MB in the end (delta: 949.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 21:00:40,712 INFO L158 Benchmark]: RCFGBuilder took 254.01ms. Allocated memory is still 197.1MB. Free memory was 158.1MB in the beginning and 147.6MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-15 21:00:40,712 INFO L158 Benchmark]: TraceAbstraction took 865498.38ms. Allocated memory was 197.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 147.1MB in the beginning and 1.1GB in the end (delta: -965.3MB). Peak memory consumption was 779.1MB. Max. memory is 8.0GB. [2022-03-15 21:00:40,713 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 0.21ms. Allocated memory is still 197.1MB. Free memory is still 161.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.16ms. Allocated memory is still 197.1MB. Free memory was 160.6MB in the beginning and 159.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.71ms. Allocated memory is still 197.1MB. Free memory was 159.1MB in the beginning and 158.2MB in the end (delta: 949.7kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 254.01ms. Allocated memory is still 197.1MB. Free memory was 158.1MB in the beginning and 147.6MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 865498.38ms. Allocated memory was 197.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 147.1MB in the beginning and 1.1GB in the end (delta: -965.3MB). Peak memory consumption was 779.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 20 PlacesBefore, 18 PlacesAfterwards, 15 TransitionsBefore, 13 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 18, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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 - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 8ms.. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 8ms.. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 8ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 865.4s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1182 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1182 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1048 mSDsCounter, 814 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3156 IncrementalHoareTripleChecker+Invalid, 3970 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 814 mSolverCounterUnsat, 10 mSDtfsCounter, 3156 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 777 GetRequests, 270 SyntacticMatches, 16 SemanticMatches, 491 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16495 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=10, InterpolantAutomatonStates: 380, 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, 10 MinimizatonAttempts, 1022 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 247 NumberOfCodeBlocks, 247 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 336 ConstructedInterpolants, 0 QuantifiedInterpolants, 2128 SizeOfPredicates, 16 NumberOfNonLiveVariables, 455 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 234/499 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown