/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/chl/chromosome-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 21:01:14,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 21:01:14,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 21:01:14,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 21:01:14,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 21:01:14,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 21:01:14,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 21:01:14,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 21:01:14,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 21:01:14,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 21:01:14,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 21:01:14,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-15 21:01:14,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 21:01:14,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 21:01:14,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 21:01:14,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 21:01:14,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 21:01:14,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 21:01:14,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 21:01:14,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 21:01:14,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 21:01:14,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 21:01:14,417 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 21:01:14,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 21:01:14,418 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 21:01:14,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 21:01:14,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 21:01:14,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 21:01:14,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 21:01:14,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 21:01:14,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 21:01:14,419 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 21:01:14,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 21:01:14,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 21:01:14,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 21:01:14,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 21:01:14,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 21:01:14,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 21:01:14,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 21:01:14,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:01:14,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 21:01:14,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 21:01:14,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 21:01:14,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 21:01:14,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 21:01:14,421 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 21:01:14,421 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 21:01:14,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 21:01:14,421 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 21:01:14,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 21:01:14,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 21:01:14,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 21:01:14,660 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 21:01:14,662 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 21:01:14,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/chromosome-symm.wvr.bpl [2022-03-15 21:01:14,664 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/chromosome-symm.wvr.bpl' [2022-03-15 21:01:14,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 21:01:14,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 21:01:14,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 21:01:14,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 21:01:14,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 21:01:14,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/1) ... [2022-03-15 21:01:14,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/1) ... [2022-03-15 21:01:14,723 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 21:01:14,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 21:01:14,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 21:01:14,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 21:01:14,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 21:01:14,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/1) ... [2022-03-15 21:01:14,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/1) ... [2022-03-15 21:01:14,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/1) ... [2022-03-15 21:01:14,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/1) ... [2022-03-15 21:01:14,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/1) ... [2022-03-15 21:01:14,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/1) ... [2022-03-15 21:01:14,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/1) ... [2022-03-15 21:01:14,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 21:01:14,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 21:01:14,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 21:01:14,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 21:01:14,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/1) ... [2022-03-15 21:01:14,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:01:14,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:01:14,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 21:01:14,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 21:01:14,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 21:01:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 21:01:14,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 21:01:14,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 21:01:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 21:01:14,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 21:01:14,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 21:01:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 21:01:14,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 21:01:14,837 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 21:01:14,872 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 21:01:14,873 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 21:01:14,991 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 21:01:15,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 21:01:15,063 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 21:01:15,065 INFO L202 PluginConnector]: Adding new model chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:01:15 BoogieIcfgContainer [2022-03-15 21:01:15,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 21:01:15,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 21:01:15,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 21:01:15,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 21:01:15,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:01:14" (1/2) ... [2022-03-15 21:01:15,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281d5b54 and model type chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 09:01:15, skipping insertion in model container [2022-03-15 21:01:15,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:01:15" (2/2) ... [2022-03-15 21:01:15,074 INFO L111 eAbstractionObserver]: Analyzing ICFG chromosome-symm.wvr.bpl [2022-03-15 21:01:15,077 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 21:01:15,077 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 21:01:15,077 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 21:01:15,078 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 21:01:15,125 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 21:01:15,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 21:01:15,168 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 21:01:15,168 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 21:01:15,174 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 21:01:15,199 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 18 transitions, 52 flow [2022-03-15 21:01:15,201 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 18 transitions, 52 flow [2022-03-15 21:01:15,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 52 flow [2022-03-15 21:01:15,237 INFO L129 PetriNetUnfolder]: 2/16 cut-off events. [2022-03-15 21:01:15,238 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 21:01:15,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2022-03-15 21:01:15,240 INFO L116 LiptonReduction]: Number of co-enabled transitions 48 [2022-03-15 21:01:15,342 INFO L131 LiptonReduction]: Checked pairs total: 31 [2022-03-15 21:01:15,343 INFO L133 LiptonReduction]: Total number of compositions: 5 [2022-03-15 21:01:15,352 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 14 transitions, 44 flow [2022-03-15 21:01:15,360 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 21:01:15,364 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:15,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:15,364 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:15,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:15,372 INFO L85 PathProgramCache]: Analyzing trace with hash 99351698, now seen corresponding path program 1 times [2022-03-15 21:01:15,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:15,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6090390] [2022-03-15 21:01:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:15,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:15,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:15,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6090390] [2022-03-15 21:01:15,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6090390] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:01:15,501 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:01:15,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 21:01:15,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [608450745] [2022-03-15 21:01:15,505 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:15,510 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:15,528 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 25 transitions. [2022-03-15 21:01:15,529 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:15,750 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [67#(and (or isNull_1 (= i_9 0)) (or (not break_7) isNull_1)), 66#isNull_1] [2022-03-15 21:01:15,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 21:01:15,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 21:01:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-15 21:01:15,770 INFO L87 Difference]: Start difference. First operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:15,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:01:15,831 INFO L93 Difference]: Finished difference Result 23 states and 42 transitions. [2022-03-15 21:01:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 21:01:15,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-03-15 21:01:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:01:15,841 INFO L225 Difference]: With dead ends: 23 [2022-03-15 21:01:15,841 INFO L226 Difference]: Without dead ends: 22 [2022-03-15 21:01:15,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-03-15 21:01:15,844 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:01:15,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:01:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-15 21:01:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-03-15 21:01:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2022-03-15 21:01:15,876 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 9 [2022-03-15 21:01:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:01:15,876 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2022-03-15 21:01:15,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:15,877 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2022-03-15 21:01:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-15 21:01:15,877 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:15,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:15,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 21:01:15,878 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:15,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:15,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1215389511, now seen corresponding path program 1 times [2022-03-15 21:01:15,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:15,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013900626] [2022-03-15 21:01:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:15,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:01:15,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:15,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013900626] [2022-03-15 21:01:15,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013900626] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:01:15,936 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:01:15,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 21:01:15,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [761872495] [2022-03-15 21:01:15,936 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:15,937 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:15,938 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2022-03-15 21:01:15,939 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:16,135 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [141#(and (not (<= 5 i_6)) (not break_4)), 142#(not isNull_3)] [2022-03-15 21:01:16,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 21:01:16,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 21:01:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-15 21:01:16,137 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:01:16,195 INFO L93 Difference]: Finished difference Result 30 states and 55 transitions. [2022-03-15 21:01:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 21:01:16,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 10 [2022-03-15 21:01:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:01:16,196 INFO L225 Difference]: With dead ends: 30 [2022-03-15 21:01:16,196 INFO L226 Difference]: Without dead ends: 27 [2022-03-15 21:01:16,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-15 21:01:16,197 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:01:16,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:01:16,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-15 21:01:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-15 21:01:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 26 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 21:01:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 51 transitions. [2022-03-15 21:01:16,201 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 51 transitions. Word has length 10 [2022-03-15 21:01:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:01:16,201 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 51 transitions. [2022-03-15 21:01:16,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 51 transitions. [2022-03-15 21:01:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 21:01:16,202 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:16,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:16,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 21:01:16,202 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:16,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash 943418490, now seen corresponding path program 1 times [2022-03-15 21:01:16,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:16,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225836390] [2022-03-15 21:01:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:16,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:16,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:16,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225836390] [2022-03-15 21:01:16,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225836390] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:01:16,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999922884] [2022-03-15 21:01:16,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:16,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:01:16,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:01:16,423 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 21:01:16,434 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 21:01:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:16,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 21:01:16,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:01:16,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-03-15 21:01:16,552 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-03-15 21:01:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:16,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:01:17,000 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:01:17,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 37 [2022-03-15 21:01:17,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2022-03-15 21:01:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:17,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999922884] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:01:17,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:01:17,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-03-15 21:01:17,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1896090249] [2022-03-15 21:01:17,040 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:17,041 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:17,043 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2022-03-15 21:01:17,043 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:18,374 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [308#(and (or (<= (+ result_8 result_5) 0) (not break_4)) (or (<= i_9 1) (not break_4)) (or (<= 1 result_5) (not break_4) (<= 1 result_8)) (or break_4 (not (<= 5 i_6)))), 314#(and (or (<= i_9 1) (= (select o_2 0) (select o_0 0))) (or (= (select o_2 0) (select o_0 0)) (<= (+ result_8 (select o_0 0)) (select o_2 0))) (or (<= (+ (select o_2 0) 1) (select o_0 0)) (= (select o_2 0) (select o_0 0)) (<= 1 result_8))), 312#(and (or (not (< i_6 5)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (< i_6 5)) (<= (+ (select o_2 i_6) 1) (select o_0 i_6)) break_4) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (= i_9 0)) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (+ (select o_0 i_6) (select o_2 i_9)) (+ (select o_2 i_6) (select o_0 i_9))))), 311#(and (or (not (< i_6 5)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 4 i_6))) (or (<= i_9 1) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (+ (select o_2 i_6) 1) (select o_0 i_6)) break_4 (<= 1 result_8)) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ result_8 (select o_0 i_6)) (select o_2 i_6)) (not (< i_6 5)) break_4)), 310#(and (or (not (< i_6 5)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (+ (select o_2 i_6) 1) (select o_0 i_6)) break_4 (<= 1 result_8)) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ result_8 (select o_0 i_6)) (select o_2 i_6)) (not (< i_6 5)) break_4 (not (<= (+ (select o_0 i_6) 1) (+ (select o_2 i_6) result_8)))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (+ result_8 1) 0) break_4 (<= (+ (select o_0 i_6) 1) (+ (select o_2 i_6) result_8)))), 309#(and (or (not break_4) (= i_9 0)) (or (<= (+ result_5 (select o_2 i_9)) (select o_0 i_9)) (not break_4)) (or break_4 (not (<= 5 i_6))) (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (<= 1 result_5) (not break_4))), 315#(or (= (select o_2 0) (select o_0 0)) (= i_9 0)), 313#(and (or (<= (+ (select o_2 0) 1) (select o_0 0)) (= (select o_2 0) (select o_0 0)) (<= 1 result_8)) (or (<= (+ (select o_0 0) 1) (+ (select o_2 0) result_8)) (<= (+ result_8 1) 0) (= (select o_2 0) (select o_0 0))) (or (< (+ (select o_2 0) result_8) (+ (select o_0 0) 1)) (= (select o_2 0) (select o_0 0)) (<= (+ result_8 (select o_0 0)) (select o_2 0)))), 307#(and (or (<= (+ result_5 1) result_8) (<= (+ result_8 1) 0) (not break_4)) (or (not (<= (+ result_5 1) result_8)) (<= (+ result_8 result_5) 0) (not break_4)) (or (<= 1 result_5) (not break_4) (<= 1 result_8)) (or break_4 (not (<= 5 i_6))))] [2022-03-15 21:01:18,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:01:18,375 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:01:18,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-15 21:01:18,376 INFO L87 Difference]: Start difference. First operand 27 states and 51 transitions. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:01:19,969 INFO L93 Difference]: Finished difference Result 101 states and 169 transitions. [2022-03-15 21:01:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 21:01:19,970 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 17 states have internal predecessors, (35), 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 21:01:19,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:01:19,971 INFO L225 Difference]: With dead ends: 101 [2022-03-15 21:01:19,971 INFO L226 Difference]: Without dead ends: 95 [2022-03-15 21:01:19,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=234, Invalid=1572, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 21:01:19,972 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 21:01:19,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 21:01:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-03-15 21:01:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 40. [2022-03-15 21:01:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 39 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 79 transitions. [2022-03-15 21:01:19,977 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 79 transitions. Word has length 11 [2022-03-15 21:01:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:01:19,977 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 79 transitions. [2022-03-15 21:01:19,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:19,977 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 79 transitions. [2022-03-15 21:01:19,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 21:01:19,978 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:19,978 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:19,997 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 21:01:20,183 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 21:01:20,184 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:20,184 INFO L85 PathProgramCache]: Analyzing trace with hash -819122735, now seen corresponding path program 2 times [2022-03-15 21:01:20,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:20,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459556964] [2022-03-15 21:01:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:20,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:20,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:20,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459556964] [2022-03-15 21:01:20,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459556964] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:01:20,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249127716] [2022-03-15 21:01:20,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:01:20,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:01:20,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:01:20,294 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 21:01:20,296 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 21:01:20,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:01:20,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:01:20,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 21:01:20,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:01:20,383 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2022-03-15 21:01:20,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-03-15 21:01:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:20,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:01:20,459 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:01:20,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 43 [2022-03-15 21:01:20,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-03-15 21:01:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:20,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249127716] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:01:20,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:01:20,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-15 21:01:20,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [478917550] [2022-03-15 21:01:20,479 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:20,480 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:20,482 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 50 transitions. [2022-03-15 21:01:20,482 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:20,991 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [608#(and (or break_7 (not break_4)) (or break_7 (not (<= 5 i_6)))), 614#(or break_7 (= (select o_2 0) (select o_0 0))), 612#(and (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_7 break_4) (or (not (< i_6 5)) break_7 break_4 (not (<= 4 i_6)))), 610#(and (or (= (select o_2 i_6) (select o_0 i_6)) (not (< i_6 5)) break_4) (or (not (< i_6 5)) (< i_6 4) break_4)), 609#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (<= 5 i_6)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))) (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not break_4) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 611#(= (select o_2 0) (select o_0 0)), 613#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (< i_6 5)) break_4 (<= (+ (select o_2 i_9) 1) (select o_0 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (< i_6 5)) break_4 (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 615#(or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (= (select o_2 0) (select o_0 0)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))), 607#(and (not (<= 5 i_6)) (not break_4))] [2022-03-15 21:01:20,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 21:01:20,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:20,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 21:01:20,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-15 21:01:20,992 INFO L87 Difference]: Start difference. First operand 40 states and 79 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:01:21,464 INFO L93 Difference]: Finished difference Result 53 states and 99 transitions. [2022-03-15 21:01:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 21:01:21,465 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-03-15 21:01:21,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:01:21,465 INFO L225 Difference]: With dead ends: 53 [2022-03-15 21:01:21,465 INFO L226 Difference]: Without dead ends: 46 [2022-03-15 21:01:21,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2022-03-15 21:01:21,466 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:01:21,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 21:01:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-15 21:01:21,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2022-03-15 21:01:21,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 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 21:01:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 61 transitions. [2022-03-15 21:01:21,469 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 61 transitions. Word has length 12 [2022-03-15 21:01:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:01:21,469 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 61 transitions. [2022-03-15 21:01:21,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 61 transitions. [2022-03-15 21:01:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 21:01:21,469 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:21,470 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:21,486 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 21:01:21,679 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 21:01:21,679 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:21,680 INFO L85 PathProgramCache]: Analyzing trace with hash -853010215, now seen corresponding path program 3 times [2022-03-15 21:01:21,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:21,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582363555] [2022-03-15 21:01:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:21,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:21,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:21,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582363555] [2022-03-15 21:01:21,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582363555] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:01:21,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543342392] [2022-03-15 21:01:21,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:01:21,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:01:21,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:01:21,745 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 21:01:21,746 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 21:01:21,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 21:01:21,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:01:21,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 21:01:21,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:01:21,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2022-03-15 21:01:21,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-03-15 21:01:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:21,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:01:21,891 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:01:21,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2022-03-15 21:01:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:21,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543342392] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:01:21,895 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:01:21,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-15 21:01:21,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [613244017] [2022-03-15 21:01:21,895 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:21,896 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:21,897 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 50 transitions. [2022-03-15 21:01:21,898 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:23,142 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 12 new interpolants: [843#(or (not (= (select o_2 0) (select o_0 0))) (= (select o_2 1) (select o_0 1))), 835#(and (or (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 839#(and (or (<= i_9 1) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (not break_7) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (<= i_9 1) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (not break_7) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 841#(and (or (not (< i_6 5)) break_4 (<= (select o_2 i_9) (select o_0 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (= i_9 0)) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (select o_2 i_9) (select o_0 i_9))) (or (not (< i_6 5)) break_4 (not (<= 4 i_6)) (= i_9 0)) (or (not (< i_6 5)) break_4 (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (select o_0 i_9) (select o_2 i_9)))), 842#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (<= 4 i_6)) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (select o_2 i_9) (select o_0 i_9))) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (= i_9 0)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (select o_2 i_9) (select o_0 i_9))) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (= i_9 0))), 840#(and (or (not break_4) (= i_9 0)) (or (<= (select o_0 i_9) (select o_2 i_9)) (not break_4)) (or (<= (select o_2 i_9) (select o_0 i_9)) (not break_4)) (or (not (<= 5 i_6)) (= i_9 0)) (or (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 5 i_6))) (or (not (<= 5 i_6)) (<= (select o_2 i_9) (select o_0 i_9)))), 837#(and (or (<= i_9 1) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (not break_7) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (not break_7) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (<= i_9 1) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 844#(and (or (<= i_9 1) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 1) (select o_0 1))) (or (not break_7) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 1) (select o_0 1)))), 838#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 836#(and (or (<= i_9 1) (not break_4)) (or (not break_7) (not break_4)) (or (<= i_9 1) (not (<= 5 i_6))) (or (not break_7) (not (<= 5 i_6)))), 845#(or (not (= (select o_2 0) (select o_0 0))) (= i_9 0) (= (select o_2 1) (select o_0 1))), 834#(and (not (<= 5 i_6)) (not break_4))] [2022-03-15 21:01:23,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 21:01:23,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 21:01:23,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-03-15 21:01:23,143 INFO L87 Difference]: Start difference. First operand 32 states and 61 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 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 21:01:24,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:01:24,671 INFO L93 Difference]: Finished difference Result 61 states and 121 transitions. [2022-03-15 21:01:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 21:01:24,672 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 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) Word has length 12 [2022-03-15 21:01:24,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:01:24,673 INFO L225 Difference]: With dead ends: 61 [2022-03-15 21:01:24,673 INFO L226 Difference]: Without dead ends: 61 [2022-03-15 21:01:24,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=358, Invalid=1804, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 21:01:24,674 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 21:01:24,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 21:01:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-03-15 21:01:24,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2022-03-15 21:01:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 45 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 97 transitions. [2022-03-15 21:01:24,677 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 97 transitions. Word has length 12 [2022-03-15 21:01:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:01:24,677 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 97 transitions. [2022-03-15 21:01:24,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 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 21:01:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 97 transitions. [2022-03-15 21:01:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 21:01:24,678 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:24,678 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:24,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 21:01:24,903 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 21:01:24,904 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:24,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:24,904 INFO L85 PathProgramCache]: Analyzing trace with hash -673837742, now seen corresponding path program 4 times [2022-03-15 21:01:24,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:24,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137002610] [2022-03-15 21:01:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:25,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:25,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137002610] [2022-03-15 21:01:25,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137002610] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:01:25,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503240597] [2022-03-15 21:01:25,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:01:25,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:01:25,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:01:25,119 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 21:01:25,128 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 21:01:25,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:01:25,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:01:25,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 21:01:25,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:01:25,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:01:25,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-03-15 21:01:25,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:01:25,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-03-15 21:01:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:25,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:01:25,748 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:01:25,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 37 [2022-03-15 21:01:25,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2022-03-15 21:01:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:25,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503240597] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:01:25,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:01:25,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-15 21:01:25,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [511580006] [2022-03-15 21:01:25,779 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:25,780 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:25,782 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2022-03-15 21:01:25,783 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:28,297 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 16 new interpolants: [1144#(and (or (<= (+ result_8 result_5) 0) (not break_4)) (or (<= 0 result_5) (not break_4) (<= 1 result_8)) (or break_4 (not (<= 5 i_6))) (or (<= 1 result_5) (not break_4) (<= (+ result_5 1) 0))), 1149#(and (or (not (< i_6 5)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 4 i_6))) (or (<= i_9 1) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (+ (select o_0 i_6) (select o_2 i_9)) (+ (select o_2 i_6) (select o_0 i_9)))) (or (<= (+ (select o_2 i_6) (select o_0 i_9)) (+ (select o_0 i_6) (select o_2 i_9))) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 1151#(and (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= i_9 2) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= (select o_2 (+ i_6 1)) (+ (select o_0 (+ i_6 1)) result_8)) (not (<= result_8 0)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4)) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= (+ (select o_0 (+ i_6 1)) result_8) (select o_2 (+ i_6 1))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)))), 1154#(and (or (not (< i_6 5)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (= i_9 0)) (or (<= (+ (select o_2 i_6) (select o_0 1)) (+ (select o_2 1) (select o_0 i_6))) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (<= (+ (select o_2 1) (select o_0 i_6)) (+ (select o_2 i_6) (select o_0 1))) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 1145#(and (or (<= (+ result_8 result_5) 0) (not break_4)) (or (<= i_9 2) (not break_4)) (or break_4 (not (<= 5 i_6))) (or (<= 1 result_5) (not break_4) (<= (+ result_5 1) 0)) (or (not (<= result_8 0)) (<= 0 (+ result_8 result_5)) (not break_4))), 1153#(and (or (not break_4) (= i_9 0)) (or (<= (+ (select o_2 1) result_5) (select o_0 1)) (not break_4)) (or break_4 (not (<= 5 i_6))) (or (<= 1 result_5) (not break_4) (<= (+ result_5 1) 0)) (or (<= (select o_0 1) (+ (select o_2 1) result_5)) (not break_4))), 1147#(and (or (not (< i_6 5)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 4 i_6))) (or (not (<= result_8 0)) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (select o_2 i_6) (+ result_8 (select o_0 i_6))) break_4) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ result_8 (select o_0 i_6)) (select o_2 i_6)) (not (< i_6 5)) break_4) (or (<= i_9 2) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 1159#(or (not (= (select o_2 0) (select o_0 0))) (= i_9 0) (= (select o_2 1) (select o_0 1))), 1157#(and (or (< 0 result_8) (not (= (select o_2 0) (select o_0 0))) (<= (select o_2 1) (+ result_8 (select o_0 1))) (= (select o_2 1) (select o_0 1))) (or (not (= (select o_2 0) (select o_0 0))) (<= (+ result_8 (select o_0 1)) (select o_2 1)) (= (select o_2 1) (select o_0 1))) (or (<= i_9 2) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 1) (select o_0 1)))), 1150#(and (or (<= (+ (select o_0 (+ i_6 1)) result_8) (select o_2 (+ i_6 1))) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 4 i_6)) (or (<= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= 1 result_8))), 1146#(and (or (not (< i_6 5)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 4 i_6))) (or (<= 5 i_6) break_4 (<= (select o_2 i_6) (select o_0 i_6)) (<= 1 result_8)) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ result_8 (select o_0 i_6)) (select o_2 i_6)) (not (< i_6 5)) break_4)), 1155#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (+ (select o_2 1) (select o_0 (+ i_6 1))) (+ (select o_2 (+ i_6 1)) (select o_0 1)))) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (+ (select o_2 (+ i_6 1)) (select o_0 1)) (+ (select o_2 1) (select o_0 (+ i_6 1)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (= i_9 0))), 1148#(and (or (<= (select o_0 i_9) (+ result_5 (select o_2 i_9))) (not break_4)) (or (<= i_9 1) (not break_4)) (or (<= (+ result_5 (select o_2 i_9)) (select o_0 i_9)) (not break_4)) (or break_4 (not (<= 5 i_6))) (or (<= 1 result_5) (not break_4) (<= (+ result_5 1) 0))), 1158#(and (or (<= i_9 1) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 1) (select o_0 1))) (or (not (= (select o_2 0) (select o_0 0))) (<= (+ (select o_2 i_9) (select o_0 1)) (+ (select o_2 1) (select o_0 i_9))) (= (select o_2 1) (select o_0 1))) (or (<= (+ (select o_2 1) (select o_0 i_9)) (+ (select o_2 i_9) (select o_0 1))) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 1) (select o_0 1)))), 1156#(and (or (not (= (select o_2 0) (select o_0 0))) (<= (select o_2 1) (select o_0 1)) (<= 1 result_8)) (or (not (= (select o_2 0) (select o_0 0))) (<= (+ result_8 (select o_0 1)) (select o_2 1)) (= (select o_2 1) (select o_0 1)))), 1152#(and (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= i_9 1) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4)) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= (+ (select o_2 (+ i_6 1)) (select o_0 i_9)) (+ (select o_0 (+ i_6 1)) (select o_2 i_9))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= (+ (select o_0 (+ i_6 1)) (select o_2 i_9)) (+ (select o_2 (+ i_6 1)) (select o_0 i_9))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))))] [2022-03-15 21:01:28,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 21:01:28,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:28,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 21:01:28,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 21:01:28,307 INFO L87 Difference]: Start difference. First operand 46 states and 97 transitions. Second operand has 26 states, 25 states have (on average 2.12) internal successors, (53), 26 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 21:01:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:01:33,323 INFO L93 Difference]: Finished difference Result 182 states and 314 transitions. [2022-03-15 21:01:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 21:01:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.12) internal successors, (53), 26 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 13 [2022-03-15 21:01:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:01:33,325 INFO L225 Difference]: With dead ends: 182 [2022-03-15 21:01:33,325 INFO L226 Difference]: Without dead ends: 173 [2022-03-15 21:01:33,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=543, Invalid=4569, Unknown=0, NotChecked=0, Total=5112 [2022-03-15 21:01:33,326 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 186 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 21:01:33,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 0 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 21:01:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-03-15 21:01:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 59. [2022-03-15 21:01:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 2.2241379310344827) internal successors, (129), 58 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 129 transitions. [2022-03-15 21:01:33,335 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 129 transitions. Word has length 13 [2022-03-15 21:01:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:01:33,336 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 129 transitions. [2022-03-15 21:01:33,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.12) internal successors, (53), 26 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 21:01:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 129 transitions. [2022-03-15 21:01:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 21:01:33,336 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:33,337 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:33,355 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 21:01:33,537 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 21:01:33,537 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:33,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash -744139762, now seen corresponding path program 5 times [2022-03-15 21:01:33,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:33,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272086750] [2022-03-15 21:01:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:33,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:01:33,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:33,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272086750] [2022-03-15 21:01:33,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272086750] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:01:33,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831084167] [2022-03-15 21:01:33,612 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:01:33,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:01:33,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:01:33,613 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 21:01:33,613 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 21:01:33,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 21:01:33,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:01:33,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 21:01:33,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:01:33,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:01:33,763 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2022-03-15 21:01:33,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:01:33,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 2 [2022-03-15 21:01:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:01:33,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:01:33,831 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 21:01:33,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2022-03-15 21:01:33,846 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 21:01:33,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-03-15 21:01:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:01:33,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831084167] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:01:33,872 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:01:33,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-03-15 21:01:33,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [492922559] [2022-03-15 21:01:33,873 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:33,875 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:33,879 INFO L252 McrAutomatonBuilder]: Finished intersection with 37 states and 59 transitions. [2022-03-15 21:01:33,880 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:34,787 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 13 new interpolants: [1626#(and (<= i_9 0) (<= 0 i_9)), 1628#(and (or break_4 (<= (select o_2 0) (select o_0 0))) (or (<= (select o_0 0) (select o_2 0)) break_4)), 1616#(and (not (<= 5 i_6)) (not break_4)), 1620#(or (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1)))), 1627#(and (<= (select o_0 0) (select o_2 0)) (<= (select o_2 0) (select o_0 0))), 1625#(and (or (not break_7) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1)))) (or (<= i_9 1) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1))))), 1617#(and (or (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 1621#(and (or (<= i_9 1) (not break_4)) (or (not break_7) (not break_4)) (or (<= i_9 1) (not (<= 5 i_6))) (or (not break_7) (not (<= 5 i_6)))), 1622#(and (or (<= i_9 1) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (not break_7) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (not break_7) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (<= i_9 1) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 1623#(and (or (<= i_9 1) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (not break_7) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (<= i_9 1) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (not break_7) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 1618#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 1624#(and (or (<= i_9 1) (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= i_9 1) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (not break_7) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (not break_7) (< i_6 2) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 1619#(and (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))))] [2022-03-15 21:01:34,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 21:01:34,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:34,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 21:01:34,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-03-15 21:01:34,788 INFO L87 Difference]: Start difference. First operand 59 states and 129 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:36,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:01:36,988 INFO L93 Difference]: Finished difference Result 106 states and 220 transitions. [2022-03-15 21:01:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 21:01:36,989 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-15 21:01:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:01:36,989 INFO L225 Difference]: With dead ends: 106 [2022-03-15 21:01:36,989 INFO L226 Difference]: Without dead ends: 106 [2022-03-15 21:01:36,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=421, Invalid=2549, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 21:01:36,991 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 98 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 21:01:36,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 0 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 21:01:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-03-15 21:01:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 59. [2022-03-15 21:01:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 2.189655172413793) internal successors, (127), 58 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 127 transitions. [2022-03-15 21:01:36,994 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 127 transitions. Word has length 13 [2022-03-15 21:01:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:01:36,994 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 127 transitions. [2022-03-15 21:01:36,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:36,995 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 127 transitions. [2022-03-15 21:01:36,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 21:01:36,995 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:36,995 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:37,021 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 21:01:37,207 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 21:01:37,208 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 585541625, now seen corresponding path program 6 times [2022-03-15 21:01:37,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:37,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997334306] [2022-03-15 21:01:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:37,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:37,331 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:37,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997334306] [2022-03-15 21:01:37,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997334306] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:01:37,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627029656] [2022-03-15 21:01:37,332 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:01:37,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:01:37,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:01:37,333 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 21:01:37,334 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 21:01:37,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 21:01:37,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:01:37,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 21:01:37,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:01:37,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2022-03-15 21:01:37,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-03-15 21:01:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:37,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:01:37,498 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:01:37,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 43 [2022-03-15 21:01:37,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-03-15 21:01:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:37,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627029656] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:01:37,530 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:01:37,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 21:01:37,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1071920460] [2022-03-15 21:01:37,530 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:37,532 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:37,552 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 72 transitions. [2022-03-15 21:01:37,552 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:38,641 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 16 new interpolants: [2007#(and (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_7 break_4) (or (not (< i_6 5)) break_7 break_4 (not (<= 4 i_6)))), 2014#(and (or (not break_4) (= i_9 0)) (or (<= (+ (select o_0 1) 1) (select o_2 1)) (<= (+ (select o_2 1) 1) (select o_0 1)) (not (<= 5 i_6))) (or (not (<= 5 i_6)) (= i_9 0)) (or (<= (+ (select o_0 1) 1) (select o_2 1)) (<= (+ (select o_2 1) 1) (select o_0 1)) (not break_4))), 2008#(and (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_7 break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (< i_6 3) break_7 break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 2009#(or (not (= (select o_2 0) (select o_0 0))) break_7 (= (select o_2 1) (select o_0 1))), 2016#(and (or (<= (+ (select o_0 1) 1) (select o_2 1)) (<= (+ (select o_2 1) 1) (select o_0 1)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)) (= i_9 0)) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4)) (= i_9 0)) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= (+ (select o_0 1) 1) (select o_2 1)) (<= (+ (select o_2 1) 1) (select o_0 1)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)))), 2002#(and (not (<= 5 i_6)) (not break_4)), 2017#(or (not (= (select o_2 0) (select o_0 0))) (= i_9 0) (= (select o_2 1) (select o_0 1))), 2015#(and (or (<= (+ (select o_0 1) 1) (select o_2 1)) (<= (+ (select o_2 1) 1) (select o_0 1)) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (= i_9 0)) (or (not (< i_6 5)) break_4 (not (<= 4 i_6)) (= i_9 0)) (or (<= (+ (select o_0 1) 1) (select o_2 1)) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ (select o_2 1) 1) (select o_0 1)) (not (< i_6 5)) break_4)), 2012#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 2006#(and (or break_7 (not break_4)) (or break_7 (not (<= 5 i_6)))), 2003#(and (or (= (select o_2 i_6) (select o_0 i_6)) (not (< i_6 5)) break_4) (or (not (< i_6 5)) (< i_6 4) break_4)), 2010#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (<= 5 i_6)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))) (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not break_4) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 2011#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (< i_6 5)) break_4 (<= (+ (select o_2 i_9) 1) (select o_0 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (< i_6 5)) break_4 (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 2004#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 2013#(or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (select o_2 0) (select o_0 0))) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)) (= (select o_2 1) (select o_0 1))), 2005#(or (not (= (select o_2 0) (select o_0 0))) (= (select o_2 1) (select o_0 1)))] [2022-03-15 21:01:38,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 21:01:38,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 21:01:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-03-15 21:01:38,644 INFO L87 Difference]: Start difference. First operand 59 states and 127 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:40,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:01:40,215 INFO L93 Difference]: Finished difference Result 106 states and 207 transitions. [2022-03-15 21:01:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 21:01:40,216 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 21:01:40,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:01:40,216 INFO L225 Difference]: With dead ends: 106 [2022-03-15 21:01:40,216 INFO L226 Difference]: Without dead ends: 97 [2022-03-15 21:01:40,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=424, Invalid=2882, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 21:01:40,217 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 21:01:40,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 21:01:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-03-15 21:01:40,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 51. [2022-03-15 21:01:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 2.14) internal successors, (107), 50 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 107 transitions. [2022-03-15 21:01:40,220 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 107 transitions. Word has length 14 [2022-03-15 21:01:40,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:01:40,221 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 107 transitions. [2022-03-15 21:01:40,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:40,221 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 107 transitions. [2022-03-15 21:01:40,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 21:01:40,221 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:40,221 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:40,242 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 21:01:40,441 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 21:01:40,441 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:40,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash -464970255, now seen corresponding path program 7 times [2022-03-15 21:01:40,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:40,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051190682] [2022-03-15 21:01:40,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:40,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:40,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:40,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051190682] [2022-03-15 21:01:40,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051190682] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:01:40,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057566544] [2022-03-15 21:01:40,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:01:40,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:01:40,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:01:40,557 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 21:01:40,557 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 21:01:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:40,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 21:01:40,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:01:40,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2022-03-15 21:01:40,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-03-15 21:01:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:40,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:01:40,794 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:01:40,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2022-03-15 21:01:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:40,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057566544] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:01:40,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:01:40,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-03-15 21:01:40,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [619924990] [2022-03-15 21:01:40,805 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:40,806 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:40,828 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 72 transitions. [2022-03-15 21:01:40,828 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:43,581 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 20 new interpolants: [2384#(and (or (<= (select o_0 i_9) (select o_2 i_9)) (not break_4)) (or (<= (select o_2 i_9) (select o_0 i_9)) (not break_4)) (or (<= i_9 1) (not break_4)) (or (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 5 i_6))) (or (<= i_9 1) (not (<= 5 i_6))) (or (not (<= 5 i_6)) (<= (select o_2 i_9) (select o_0 i_9)))), 2390#(and (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (not (< i_6 3)) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (not (< i_6 3)))), 2397#(or (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1))) (= i_9 0)), 2378#(and (not (<= 5 i_6)) (not break_4)), 2393#(and (or (< i_6 2) (<= (select o_2 1) (select o_0 1)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= (select o_0 1) (select o_2 1)) (< i_6 2) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (< i_6 2) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= i_9 0)) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= i_9 0) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= (select o_2 1) (select o_0 1)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= (select o_0 1) (select o_2 1)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 2386#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (<= 4 i_6)) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (select o_2 i_9) (select o_0 i_9))) (or (<= i_9 1) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (<= i_9 1) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (select o_2 i_9) (select o_0 i_9)))), 2389#(and (or (<= (select o_0 1) (select o_2 1)) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (= i_9 0)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (select o_0 1) (select o_2 1)) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (< i_6 3) (<= (select o_2 1) (select o_0 1)) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (= i_9 0)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (select o_2 1) (select o_0 1)) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 2391#(and (or (not break_7) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (not (< i_6 3)) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= i_9 2) (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (not break_7) (< i_6 2) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (not (< i_6 3))) (or (<= i_9 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 2395#(and (or (not break_7) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1)))) (or (<= i_9 2) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1))))), 2382#(and (or (< i_6 3) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)))), 2388#(and (or (not (< i_6 5)) (<= (select o_2 1) (select o_0 1)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (= i_9 0)) (or (<= (select o_0 1) (select o_2 1)) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (not (< i_6 5)) break_4 (not (<= 4 i_6)) (= i_9 0)) (or (<= (select o_0 1) (select o_2 1)) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (select o_2 1) (select o_0 1)) break_4)), 2381#(and (or (not break_7) (= (select o_2 i_6) (select o_0 i_6)) (not (< i_6 5)) break_4) (or (<= i_9 2) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (not break_7) (not (< i_6 5)) (< i_6 4) break_4) (or (<= i_9 2) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 2383#(and (or (<= i_9 2) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (not break_7) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (<= i_9 2) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (not break_7) (< i_6 3) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)))), 2396#(and (or (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1))) (<= (select o_2 i_9) (select o_0 i_9))) (or (not (= (select o_2 0) (select o_0 0))) (<= (select o_0 i_9) (select o_2 i_9)) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1)))) (or (<= i_9 1) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1))))), 2379#(and (or (not break_7) (not break_4)) (or (<= i_9 2) (not (<= 5 i_6))) (or (<= i_9 2) (not break_4)) (or (not break_7) (not (<= 5 i_6)))), 2394#(or (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1)))), 2380#(and (or (= (select o_2 i_6) (select o_0 i_6)) (not (< i_6 5)) break_4) (or (not (< i_6 5)) (< i_6 4) break_4)), 2387#(and (or (not break_4) (= i_9 0)) (or (<= (select o_0 1) (select o_2 1)) (not break_4)) (or (not (<= 5 i_6)) (= i_9 0)) (or (<= (select o_0 1) (select o_2 1)) (not (<= 5 i_6))) (or (<= (select o_2 1) (select o_0 1)) (not (<= 5 i_6))) (or (<= (select o_2 1) (select o_0 1)) (not break_4))), 2392#(and (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (select o_2 i_9) (select o_0 i_9)) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= i_9 1) (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= i_9 1) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (select o_2 i_9) (select o_0 i_9)))), 2385#(and (or (<= i_9 1) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (not (< i_6 5)) break_4 (<= (select o_2 i_9) (select o_0 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (select o_2 i_9) (select o_0 i_9))) (or (<= i_9 1) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (not (< i_6 5)) break_4 (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (select o_0 i_9) (select o_2 i_9))))] [2022-03-15 21:01:43,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 21:01:43,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 21:01:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 21:01:43,584 INFO L87 Difference]: Start difference. First operand 51 states and 107 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 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 21:01:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:01:49,671 INFO L93 Difference]: Finished difference Result 138 states and 288 transitions. [2022-03-15 21:01:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 21:01:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 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 14 [2022-03-15 21:01:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:01:49,673 INFO L225 Difference]: With dead ends: 138 [2022-03-15 21:01:49,673 INFO L226 Difference]: Without dead ends: 138 [2022-03-15 21:01:49,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1171, Invalid=8929, Unknown=0, NotChecked=0, Total=10100 [2022-03-15 21:01:49,675 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 213 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 21:01:49,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 0 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 21:01:49,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-03-15 21:01:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 78. [2022-03-15 21:01:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.3896103896103895) internal successors, (184), 77 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 184 transitions. [2022-03-15 21:01:49,685 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 184 transitions. Word has length 14 [2022-03-15 21:01:49,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:01:49,685 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 184 transitions. [2022-03-15 21:01:49,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 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 21:01:49,685 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 184 transitions. [2022-03-15 21:01:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 21:01:49,686 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:49,686 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:49,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 21:01:49,893 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 21:01:49,893 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:49,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:49,894 INFO L85 PathProgramCache]: Analyzing trace with hash 714608787, now seen corresponding path program 8 times [2022-03-15 21:01:49,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:49,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074512455] [2022-03-15 21:01:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:49,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:01:50,006 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:50,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074512455] [2022-03-15 21:01:50,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074512455] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:01:50,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099795620] [2022-03-15 21:01:50,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:01:50,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:01:50,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:01:50,008 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 21:01:50,019 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 21:01:50,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:01:50,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:01:50,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 21:01:50,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:01:50,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:01:50,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-03-15 21:01:50,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:01:50,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-03-15 21:01:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:01:50,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:01:50,159 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 21:01:50,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2022-03-15 21:01:50,165 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 21:01:50,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-03-15 21:01:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:01:50,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099795620] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:01:50,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:01:50,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-03-15 21:01:50,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [496395843] [2022-03-15 21:01:50,195 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:50,195 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:50,197 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 68 transitions. [2022-03-15 21:01:50,197 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:50,757 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [2918#(and (not break_7) (not (<= 5 i_9))), 2921#(and (or (<= result_8 0) (<= (+ result_8 (select o_0 0)) (select o_2 0))) (or (<= (+ (select o_2 0) 1) (select o_0 0)) (< 0 result_8))), 2924#(and (or (not break_7) break_4) (or break_4 (not (<= 5 i_9)))), 2919#(and (or (not (< i_9 5)) (< i_9 4) break_7) (or (not (< i_9 5)) (= (select o_0 i_9) (select o_2 i_9)) break_7)), 2920#(= (select o_2 0) (select o_0 0)), 2922#(and (or (<= i_9 1) break_7) (or (not break_7) (<= (+ result_8 (select o_0 0)) (select o_2 0))) (or (not (<= result_8 0)) (not break_7) (<= (select o_2 0) (+ result_8 (select o_0 0)))) (or (not break_7) (<= (+ (select o_2 0) 1) (select o_0 0)) (< 0 result_8))), 2923#(and (<= i_9 0) (<= 0 i_9)), 2925#(and (or (not (< i_9 5)) break_7 break_4 (not (<= 4 i_9))) (or (not (< i_9 5)) (= 0 (+ (* (- 1) (select o_0 i_9)) (select o_2 i_9))) break_7 break_4)), 2926#(or break_4 (= (select o_2 0) (select o_0 0)))] [2022-03-15 21:01:50,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 21:01:50,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:50,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 21:01:50,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-03-15 21:01:50,758 INFO L87 Difference]: Start difference. First operand 78 states and 184 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:51,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:01:51,301 INFO L93 Difference]: Finished difference Result 97 states and 206 transitions. [2022-03-15 21:01:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 21:01:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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 21:01:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:01:51,302 INFO L225 Difference]: With dead ends: 97 [2022-03-15 21:01:51,302 INFO L226 Difference]: Without dead ends: 93 [2022-03-15 21:01:51,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 21:01:51,303 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:01:51,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 21:01:51,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-03-15 21:01:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 71. [2022-03-15 21:01:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.2285714285714286) internal successors, (156), 70 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 156 transitions. [2022-03-15 21:01:51,306 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 156 transitions. Word has length 14 [2022-03-15 21:01:51,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:01:51,306 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 156 transitions. [2022-03-15 21:01:51,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:01:51,306 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 156 transitions. [2022-03-15 21:01:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 21:01:51,306 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:01:51,306 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:01:51,325 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 21:01:51,514 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 21:01:51,515 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:01:51,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:01:51,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1529500870, now seen corresponding path program 9 times [2022-03-15 21:01:51,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:01:51,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707492547] [2022-03-15 21:01:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:01:51,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:01:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:01:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:51,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:01:51,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707492547] [2022-03-15 21:01:51,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707492547] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:01:51,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76544634] [2022-03-15 21:01:51,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:01:51,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:01:51,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:01:51,694 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 21:01:51,694 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 21:01:51,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 21:01:51,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:01:51,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-15 21:01:51,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:01:51,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:01:51,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2022-03-15 21:01:51,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:01:51,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 5 [2022-03-15 21:01:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:51,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:01:52,353 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:01:52,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 60 [2022-03-15 21:01:52,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2022-03-15 21:01:52,376 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:01:52,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76544634] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:01:52,376 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:01:52,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-15 21:01:52,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [945962964] [2022-03-15 21:01:52,376 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:01:52,377 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:01:52,390 INFO L252 McrAutomatonBuilder]: Finished intersection with 51 states and 85 transitions. [2022-03-15 21:01:52,390 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:01:54,759 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 25 new interpolants: [3315#(and (or (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (<= 3 i_6)) (not (< i_6 4))) (or (not (<= 3 i_6)) (not (< i_6 4)) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (<= (+ (select o_0 (+ i_9 1)) (select o_2 (+ i_6 1))) (+ (select o_0 (+ i_6 1)) (select o_2 (+ i_9 1)))) (not (< i_6 4))) (or (not (< i_6 4)) (<= (+ (select o_0 (+ i_6 1)) (select o_2 (+ i_9 1))) (+ (select o_0 (+ i_9 1)) (select o_2 (+ i_6 1))))) (or (<= i_9 1) (not (< i_6 4)))), 3306#(and (or (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 3 i_6)) (not (< i_6 4))) (or (<= i_9 2) (not (< i_6 4))) (or (<= (+ (select o_2 (+ i_6 1)) (select o_0 i_9)) (+ (select o_0 (+ i_6 1)) (select o_2 i_9))) (not (< i_6 4))) (or (<= (+ (select o_0 (+ i_6 1)) (select o_2 i_9)) (+ (select o_2 (+ i_6 1)) (select o_0 i_9))) (not (< i_6 4))) (or (not (<= 3 i_6)) (<= (select o_2 i_9) (select o_0 i_9)) (not (< i_6 4)))), 3308#(and (or (<= (select o_2 (+ 2 i_6)) (+ (select o_0 (+ 2 i_6)) result_8)) (not break_7) (<= 3 i_6)) (or (not break_7) (< i_6 2) (<= 3 i_6)) (or break_7 (<= i_9 3) (not (< i_6 3))) (or (not break_7) (<= (+ (select o_0 (+ 2 i_6)) result_8) (select o_2 (+ 2 i_6))) (<= 3 i_6)) (or (not break_7) (<= (+ result_8 1) 0) (not (< i_6 3)) (<= 1 result_8))), 3320#(and (or (<= (+ (select o_2 2) (select o_0 (+ i_6 1))) (+ (select o_2 (+ i_6 1)) (select o_0 2))) (not (< i_6 4))) (or (not (< i_6 4)) (<= (+ (select o_2 (+ i_6 1)) (select o_0 2)) (+ (select o_2 2) (select o_0 (+ i_6 1))))) (or (not (< i_6 4)) (= i_9 0)) (or (<= (select o_2 2) (select o_0 2)) (not (<= 3 i_6)) (not (< i_6 4))) (or (<= (select o_0 2) (select o_2 2)) (not (<= 3 i_6)) (not (< i_6 4)))), 3319#(and (or (not (< i_6 5)) (<= (select o_0 2) (select o_2 2)) (not (<= 4 i_6))) (or (not (< i_6 5)) (= i_9 0)) (or (not (< i_6 5)) (<= (+ (select o_2 i_6) (select o_0 2)) (+ (select o_2 2) (select o_0 i_6)))) (or (<= (select o_2 2) (select o_0 2)) (not (< i_6 5)) (not (<= 4 i_6))) (or (<= (+ (select o_2 2) (select o_0 i_6)) (+ (select o_2 i_6) (select o_0 2))) (not (< i_6 5)))), 3317#(and (<= i_9 2) (<= (+ (select o_2 2) (select o_0 i_9)) (+ (select o_0 2) (select o_2 i_9))) (<= (+ (select o_0 2) (select o_2 i_9)) (+ (select o_2 2) (select o_0 i_9)))), 3322#(= i_9 0), 3321#(and (or (<= (+ (select o_0 2) (select o_2 (+ 2 i_6))) (+ (select o_2 2) (select o_0 (+ 2 i_6)))) (not (< i_6 3))) (or (= i_9 0) (not (< i_6 3))) (or (not (<= 2 i_6)) (<= (select o_0 2) (select o_2 2)) (not (< i_6 3))) (or (not (<= 2 i_6)) (<= (select o_2 2) (select o_0 2)) (not (< i_6 3))) (or (<= (+ (select o_2 2) (select o_0 (+ 2 i_6))) (+ (select o_0 2) (select o_2 (+ 2 i_6)))) (not (< i_6 3)))), 3302#(and (or (not break_7) (<= (+ result_8 (select o_0 i_6)) (select o_2 i_6)) (not (< i_6 5))) (or (not (< i_6 5)) break_7 (<= i_9 3)) (or (not break_7) (not (< i_6 5)) (< i_6 4)) (or (not break_7) (not (< i_6 5)) (<= (+ result_8 1) 0) (<= 1 result_8)) (or (<= 5 i_6) (not break_7) (<= (select o_2 i_6) (+ result_8 (select o_0 i_6))))), 3305#(and (or break_7 (not (< i_6 4)) (<= i_9 3)) (or (not break_7) (< i_6 3) (not (< i_6 4))) (or (not break_7) (<= (+ result_8 1) 0) (not (< i_6 4)) (<= 1 result_8)) (or (<= (select o_2 (+ i_6 1)) (+ (select o_0 (+ i_6 1)) result_8)) (not break_7) (<= 4 i_6)) (or (<= (+ (select o_0 (+ i_6 1)) result_8) (select o_2 (+ i_6 1))) (not break_7) (<= 4 i_6))), 3304#(and (or (<= (+ (select o_0 (+ i_6 1)) result_8) (select o_2 (+ i_6 1))) (<= 4 i_6)) (or (<= (+ result_8 1) 0) (not (< i_6 4)) (<= 1 result_8)) (or (< i_6 3) (not (< i_6 4))) (or (<= (select o_2 (+ i_6 1)) (+ (select o_0 (+ i_6 1)) result_8)) (<= 4 i_6))), 3310#(and (or (not break_7) (<= (+ (select o_0 2) result_8) (select o_2 2))) (or break_7 (<= i_9 3)) (or (not break_7) (<= (select o_2 2) (+ (select o_0 2) result_8))) (or (not break_7) (<= (+ result_8 1) 0) (<= 1 result_8))), 3299#(and (or (not break_7) (< i_6 5)) (or (not break_7) (<= 0 (+ result_8 result_5))) (or break_7 (<= i_9 3)) (or (not break_7) (<= (+ result_8 result_5) 0)) (or (not break_7) (<= (+ result_8 1) 0) (<= 1 result_8))), 3311#(and (or (<= (+ (select o_0 (+ 2 i_6)) (select o_2 i_9)) (+ (select o_0 i_9) (select o_2 (+ 2 i_6)))) (not (< i_6 3))) (or (<= i_9 2) (not (< i_6 3))) (or (not (<= 2 i_6)) (<= (select o_0 i_9) (select o_2 i_9)) (not (< i_6 3))) (or (not (<= 2 i_6)) (<= (select o_2 i_9) (select o_0 i_9)) (not (< i_6 3))) (or (<= (+ (select o_0 i_9) (select o_2 (+ 2 i_6))) (+ (select o_0 (+ 2 i_6)) (select o_2 i_9))) (not (< i_6 3)))), 3300#(and (<= i_9 2) (<= (select o_0 i_9) (+ result_5 (select o_2 i_9))) (<= (+ result_5 (select o_2 i_9)) (select o_0 i_9)) (or (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 5 i_6))) (or (not (<= 5 i_6)) (<= (select o_2 i_9) (select o_0 i_9)))), 3307#(and (or (< i_6 2) (<= 3 i_6)) (or (<= (+ result_8 1) 0) (not (< i_6 3)) (<= 1 result_8)) (or (<= (select o_2 (+ 2 i_6)) (+ (select o_0 (+ 2 i_6)) result_8)) (<= 3 i_6)) (or (<= (+ (select o_0 (+ 2 i_6)) result_8) (select o_2 (+ 2 i_6))) (<= 3 i_6))), 3309#(and (<= (+ (select o_0 2) result_8) (select o_2 2)) (or (<= (+ result_8 1) 0) (<= 1 result_8)) (<= (select o_2 2) (+ (select o_0 2) result_8))), 3312#(and (<= i_9 1) (<= (select o_0 (+ i_9 1)) (+ result_5 (select o_2 (+ i_9 1)))) (<= (+ result_5 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (or (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (<= 5 i_6))) (or (not (<= 5 i_6)) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1))))), 3313#(and (or (<= (select o_0 2) (select o_2 2)) (not (<= 5 i_6))) (or (<= (select o_2 2) (select o_0 2)) (not (<= 5 i_6))) (<= (select o_0 2) (+ (select o_2 2) result_5)) (<= (+ (select o_2 2) result_5) (select o_0 2)) (= i_9 0)), 3318#(and (<= i_9 1) (<= (+ (select o_2 2) (select o_0 (+ i_9 1))) (+ (select o_0 2) (select o_2 (+ i_9 1)))) (<= (+ (select o_0 2) (select o_2 (+ i_9 1))) (+ (select o_2 2) (select o_0 (+ i_9 1))))), 3316#(and (or (not (<= 2 i_6)) (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (< i_6 3))) (or (not (<= 2 i_6)) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1))) (not (< i_6 3))) (or (<= (+ (select o_0 (+ 2 i_6)) (select o_2 (+ i_9 1))) (+ (select o_0 (+ i_9 1)) (select o_2 (+ 2 i_6)))) (not (< i_6 3))) (or (<= i_9 1) (not (< i_6 3))) (or (<= (+ (select o_0 (+ i_9 1)) (select o_2 (+ 2 i_6))) (+ (select o_0 (+ 2 i_6)) (select o_2 (+ i_9 1)))) (not (< i_6 3)))), 3303#(and (or (<= i_9 2) (not (< i_6 5))) (or (not (< i_6 5)) (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 4 i_6))) (or (not (< i_6 5)) (<= (select o_2 i_9) (select o_0 i_9)) (not (<= 4 i_6))) (or (not (< i_6 5)) (<= (+ (select o_0 i_6) (select o_2 i_9)) (+ (select o_2 i_6) (select o_0 i_9)))) (or (<= (+ (select o_2 i_6) (select o_0 i_9)) (+ (select o_0 i_6) (select o_2 i_9))) (not (< i_6 5)))), 3301#(and (or (not (< i_6 5)) (< i_6 4)) (or (not (< i_6 5)) (<= (+ result_8 1) 0) (<= 1 result_8)) (or (<= (+ result_8 (select o_0 i_6)) (select o_2 i_6)) (not (< i_6 5))) (or (<= 5 i_6) (<= (select o_2 i_6) (+ result_8 (select o_0 i_6))))), 3298#(and (<= 0 (+ result_8 result_5)) (< i_6 5) (<= (+ result_8 result_5) 0) (or (<= (+ result_8 1) 0) (<= 1 result_8))), 3314#(and (or (<= (+ (select o_0 (+ i_9 1)) (select o_2 i_6)) (+ (select o_0 i_6) (select o_2 (+ i_9 1)))) (not (< i_6 5))) (or (not (< i_6 5)) (<= (+ (select o_0 i_6) (select o_2 (+ i_9 1))) (+ (select o_0 (+ i_9 1)) (select o_2 i_6)))) (or (<= i_9 1) (not (< i_6 5))) (or (not (< i_6 5)) (not (<= 4 i_6)) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (not (< i_6 5)) (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (<= 4 i_6))))] [2022-03-15 21:01:54,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 21:01:54,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:01:54,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 21:01:54,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2299, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 21:01:54,761 INFO L87 Difference]: Start difference. First operand 71 states and 156 transitions. Second operand has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 37 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:02:06,721 INFO L93 Difference]: Finished difference Result 626 states and 1219 transitions. [2022-03-15 21:02:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-15 21:02:06,721 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 37 states have internal predecessors, (75), 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 21:02:06,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:02:06,724 INFO L225 Difference]: With dead ends: 626 [2022-03-15 21:02:06,724 INFO L226 Difference]: Without dead ends: 593 [2022-03-15 21:02:06,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8293 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1588, Invalid=25472, Unknown=0, NotChecked=0, Total=27060 [2022-03-15 21:02:06,740 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 441 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 9673 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 9673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-15 21:02:06,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 0 Invalid, 10028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 9673 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-03-15 21:02:06,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-03-15 21:02:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 171. [2022-03-15 21:02:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.6823529411764704) internal successors, (456), 170 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 456 transitions. [2022-03-15 21:02:06,748 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 456 transitions. Word has length 15 [2022-03-15 21:02:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:02:06,748 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 456 transitions. [2022-03-15 21:02:06,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 37 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 456 transitions. [2022-03-15 21:02:06,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 21:02:06,749 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:02:06,749 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:02:06,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 21:02:06,965 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 21:02:06,966 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:02:06,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:02:06,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2069238744, now seen corresponding path program 10 times [2022-03-15 21:02:06,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:02:06,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649194965] [2022-03-15 21:02:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:02:06,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:02:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:02:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:02:07,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:02:07,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649194965] [2022-03-15 21:02:07,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649194965] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:02:07,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783828035] [2022-03-15 21:02:07,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:02:07,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:02:07,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:02:07,108 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:02:07,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:02:07,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:02:07,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 21:02:07,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 21:02:07,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:02:07,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:02:07,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2022-03-15 21:02:07,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:02:07,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 2 [2022-03-15 21:02:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:02:07,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:02:07,349 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 21:02:07,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2022-03-15 21:02:07,364 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 21:02:07,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-03-15 21:02:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:02:07,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783828035] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:02:07,394 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:02:07,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-15 21:02:07,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1513315395] [2022-03-15 21:02:07,394 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:02:07,395 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:02:07,401 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 83 transitions. [2022-03-15 21:02:07,401 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:02:10,737 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 22 new interpolants: [4642#(and (or (<= i_9 1) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (not (< i_6 5)) break_4 (<= (select o_2 i_9) (select o_0 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (select o_2 i_9) (select o_0 i_9))) (or (<= i_9 1) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (not (< i_6 5)) break_4 (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (select o_0 i_9) (select o_2 i_9)))), 4649#(and (or (<= (select o_2 1) (select o_0 1)) break_4) (or (<= (select o_0 1) (select o_2 1)) break_4)), 4643#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (<= 4 i_6)) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (select o_2 i_9) (select o_0 i_9))) (or (<= i_9 1) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (<= i_9 1) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (select o_2 i_9) (select o_0 i_9)))), 4633#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 4637#(and (or (<= i_9 2) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (not break_7) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= result_8 0)) (or (<= i_9 2) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (not break_7) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= result_8 0))), 4639#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 4648#(and (<= (select o_0 1) (select o_2 1)) (<= (select o_2 1) (select o_0 1))), 4634#(and (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 4644#(and (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (select o_2 i_9) (select o_0 i_9)) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= i_9 1) (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= i_9 1) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (select o_2 i_9) (select o_0 i_9)))), 4647#(and (or (not break_7) (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))) (<= result_8 0)) (or (<= i_9 2) (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))))), 4645#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (select o_2 i_9) (select o_0 i_9))) (or (<= i_9 1) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= i_9 1) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1) (<= (select o_2 i_9) (select o_0 i_9))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1))), 4650#(and (<= i_6 1) (<= 1 i_6)), 4646#(or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))), 4638#(and (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= result_8 0)) (or (not break_7) (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= result_8 0) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= i_9 2) (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (not break_7) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= i_9 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 4651#(and (or (<= i_9 1) (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (<= (select o_2 i_9) (select o_0 i_9)) (not (= (select o_2 2) (select o_0 2)))) (or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))))), 4640#(and (or (not break_7) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (not break_7) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= i_9 2) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= result_8 0)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1) (<= result_8 0)) (or (<= i_9 2) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 4652#(and (<= i_9 0) (<= 0 i_9)), 4641#(and (or (<= (select o_0 i_9) (select o_2 i_9)) (not break_4)) (or (<= (select o_2 i_9) (select o_0 i_9)) (not break_4)) (or (<= i_9 1) (not break_4)) (or (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 5 i_6))) (or (<= i_9 1) (not (<= 5 i_6))) (or (not (<= 5 i_6)) (<= (select o_2 i_9) (select o_0 i_9)))), 4636#(and (or (not break_7) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= result_8 0)) (or (not break_7) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (<= i_9 2) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (not (< i_6 5)) break_4 (<= result_8 0) (not (<= 4 i_6))) (or (<= i_9 2) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 4632#(and (or (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 4635#(and (or (not break_7) (not break_4)) (or (<= i_9 2) (not (<= 5 i_6))) (or (not break_4) (<= result_8 0)) (or (<= i_9 2) (not break_4)) (or (not break_7) (not (<= 5 i_6))) (or (not (<= 5 i_6)) (<= result_8 0))), 4631#(and (not (<= 5 i_6)) (not break_4))] [2022-03-15 21:02:10,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 21:02:10,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:02:10,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 21:02:10,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1646, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 21:02:10,738 INFO L87 Difference]: Start difference. First operand 171 states and 456 transitions. Second operand has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:21,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:02:21,736 INFO L93 Difference]: Finished difference Result 289 states and 682 transitions. [2022-03-15 21:02:21,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-15 21:02:21,736 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 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 21:02:21,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:02:21,737 INFO L225 Difference]: With dead ends: 289 [2022-03-15 21:02:21,737 INFO L226 Difference]: Without dead ends: 289 [2022-03-15 21:02:21,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6801 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=2448, Invalid=20504, Unknown=0, NotChecked=0, Total=22952 [2022-03-15 21:02:21,739 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 256 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:02:21,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 0 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 21:02:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-03-15 21:02:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 119. [2022-03-15 21:02:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 2.23728813559322) internal successors, (264), 118 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 264 transitions. [2022-03-15 21:02:21,748 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 264 transitions. Word has length 15 [2022-03-15 21:02:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:02:21,749 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 264 transitions. [2022-03-15 21:02:21,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 264 transitions. [2022-03-15 21:02:21,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 21:02:21,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:02:21,751 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:02:21,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 21:02:21,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-15 21:02:21,968 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:02:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:02:21,969 INFO L85 PathProgramCache]: Analyzing trace with hash -170211567, now seen corresponding path program 11 times [2022-03-15 21:02:21,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:02:21,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821282156] [2022-03-15 21:02:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:02:21,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:02:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:02:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:02:22,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:02:22,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821282156] [2022-03-15 21:02:22,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821282156] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:02:22,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462906589] [2022-03-15 21:02:22,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:02:22,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:02:22,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:02:22,075 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:02:22,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 21:02:22,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 21:02:22,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:02:22,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 21:02:22,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:02:22,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2022-03-15 21:02:22,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-03-15 21:02:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:02:22,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:02:22,283 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:02:22,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 43 [2022-03-15 21:02:22,286 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-03-15 21:02:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:02:22,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462906589] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:02:22,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:02:22,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-03-15 21:02:22,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1064928797] [2022-03-15 21:02:22,311 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:02:22,312 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:02:22,316 INFO L252 McrAutomatonBuilder]: Finished intersection with 58 states and 98 transitions. [2022-03-15 21:02:22,316 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:02:24,690 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 25 new interpolants: [5536#(or (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1))) (= i_9 0)), 5529#(and (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (= i_9 0)) (or (not (< i_6 5)) break_4 (not (<= 4 i_6)) (= i_9 0)) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ (select o_0 2) 1) (select o_2 2)) (not (< i_6 5)) break_4 (<= (+ (select o_2 2) 1) (select o_0 2))) (or (<= (+ (select o_0 2) 1) (select o_2 2)) (not (< i_6 5)) break_4 (<= (+ (select o_2 2) 1) (select o_0 2)) (not (<= 4 i_6)))), 5512#(and (not (<= 5 i_6)) (not break_4)), 5534#(or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1))) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))), 5522#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 5526#(and (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 5528#(and (or (not break_4) (= i_9 0)) (or (<= (+ (select o_0 2) 1) (select o_2 2)) (not (<= 5 i_6)) (<= (+ (select o_2 2) 1) (select o_0 2))) (or (<= (+ (select o_0 2) 1) (select o_2 2)) (not break_4) (<= (+ (select o_2 2) 1) (select o_0 2))) (or (not (<= 5 i_6)) (= i_9 0))), 5514#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 5523#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 5517#(and (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_7 break_4) (or (not (< i_6 5)) break_7 break_4 (not (<= 4 i_6)))), 5525#(and (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) break_4) (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (not (< i_6 5)) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) break_4 (not (<= 4 i_6)))), 5513#(and (or (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 5521#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (< i_6 5)) break_4 (<= (+ (select o_2 i_9) 1) (select o_0 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (< i_6 5)) break_4 (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 5530#(and (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (+ (select o_0 2) 1) (select o_2 2)) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (+ (select o_2 2) 1) (select o_0 2))) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (= i_9 0)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (= i_9 0)) (or (<= (+ (select o_0 2) 1) (select o_2 2)) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (+ (select o_2 2) 1) (select o_0 2)))), 5519#(and (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_7 break_4 (= (+ (select o_0 (+ 2 i_6)) (* (- 1) (select o_2 (+ 2 i_6)))) 0) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (not (< i_6 3))) (or (not (<= 2 i_6)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_7 break_4 (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (not (< i_6 3)))), 5524#(and (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not (<= 5 i_6))) (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not break_4))), 5535#(or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1)))), 5515#(and (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 5527#(and (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (< i_6 2) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 5520#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (<= 5 i_6)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))) (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not break_4) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 5531#(and (or (<= (+ (select o_0 2) 1) (select o_2 2)) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (+ (select o_2 2) 1) (select o_0 2)) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= i_9 0) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (<= (+ (select o_0 2) 1) (select o_2 2)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (+ (select o_2 2) 1) (select o_0 2)))), 5516#(and (or break_7 (not break_4)) (or break_7 (not (<= 5 i_6)))), 5532#(or (not (= (select o_2 0) (select o_0 0))) (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1)))), 5518#(and (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_7 break_4 (not (<= 3 i_6)) (not (< i_6 4))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_7 break_4 (not (< i_6 4)))), 5533#(or (not (= (select o_2 0) (select o_0 0))) break_7 (= (select o_2 2) (select o_0 2)) (not (= (select o_2 1) (select o_0 1))))] [2022-03-15 21:02:24,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 21:02:24,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:02:24,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 21:02:24,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1497, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 21:02:24,691 INFO L87 Difference]: Start difference. First operand 119 states and 264 transitions. Second operand has 36 states, 36 states have (on average 2.25) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:02:29,406 INFO L93 Difference]: Finished difference Result 204 states and 430 transitions. [2022-03-15 21:02:29,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-15 21:02:29,407 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.25) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 21:02:29,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:02:29,408 INFO L225 Difference]: With dead ends: 204 [2022-03-15 21:02:29,408 INFO L226 Difference]: Without dead ends: 193 [2022-03-15 21:02:29,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3169 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1265, Invalid=11391, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 21:02:29,409 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 294 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 21:02:29,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 0 Invalid, 3619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 21:02:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-03-15 21:02:29,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 104. [2022-03-15 21:02:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.1844660194174756) internal successors, (225), 103 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:29,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 225 transitions. [2022-03-15 21:02:29,415 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 225 transitions. Word has length 16 [2022-03-15 21:02:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:02:29,415 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 225 transitions. [2022-03-15 21:02:29,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.25) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:29,416 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 225 transitions. [2022-03-15 21:02:29,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 21:02:29,416 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:02:29,416 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:02:29,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-15 21:02:29,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 21:02:29,631 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:02:29,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:02:29,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1623658521, now seen corresponding path program 12 times [2022-03-15 21:02:29,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:02:29,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023151624] [2022-03-15 21:02:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:02:29,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:02:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:02:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:02:29,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:02:29,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023151624] [2022-03-15 21:02:29,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023151624] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:02:29,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504600] [2022-03-15 21:02:29,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:02:29,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:02:29,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:02:29,744 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:02:29,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 21:02:29,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 21:02:29,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:02:29,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 21:02:29,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:02:29,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2022-03-15 21:02:29,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-03-15 21:02:29,891 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 21:02:29,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:02:29,975 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:02:29,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2022-03-15 21:02:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:02:29,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:02:29,987 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:02:29,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-03-15 21:02:29,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [930373944] [2022-03-15 21:02:29,987 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:02:29,988 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:02:29,991 INFO L252 McrAutomatonBuilder]: Finished intersection with 58 states and 98 transitions. [2022-03-15 21:02:29,992 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:02:34,828 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 30 new interpolants: [6206#(and (or (<= (select o_0 i_9) (select o_2 i_9)) (not break_4)) (or (<= (select o_2 i_9) (select o_0 i_9)) (not break_4)) (or (<= i_9 2) (not (<= 5 i_6))) (or (<= i_9 2) (not break_4)) (or (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 5 i_6))) (or (not (<= 5 i_6)) (<= (select o_2 i_9) (select o_0 i_9)))), 6210#(and (or (not (< i_6 5)) break_4 (<= (select o_2 i_9) (select o_0 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (select o_2 i_9) (select o_0 i_9))) (or (not (< i_6 5)) break_4 (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (select o_0 i_9) (select o_2 i_9))) (or (<= i_9 2) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (<= i_9 2) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 6214#(and (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (not break_7) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (not break_7) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4))) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4)) (<= i_9 3)) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)) (<= i_9 3))), 6230#(and (or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (<= (select o_2 i_9) (select o_0 i_9)) (not (= (select o_2 2) (select o_0 2)))) (or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (<= i_9 2) (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))))), 6216#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (<= 4 i_6)) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (select o_2 i_9) (select o_0 i_9))) (or (<= i_9 2) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (select o_2 i_9) (select o_0 i_9))) (or (<= i_9 2) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 6219#(and (or (not break_7) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select 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(select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 6212#(and (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)))), 6207#(and (or (<= i_9 1) (not break_4)) (or (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not break_4)) (or (not break_4) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (<= 5 i_6))) (or (<= i_9 1) (not (<= 5 i_6))) (or (not (<= 5 i_6)) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1))))), 6208#(and (or (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 6204#(and (not (<= 5 i_6)) (not break_4))] [2022-03-15 21:02:34,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 21:02:34,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:02:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 21:02:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2075, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 21:02:34,829 INFO L87 Difference]: Start difference. First operand 104 states and 225 transitions. Second operand has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:55,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:02:55,743 INFO L93 Difference]: Finished difference Result 294 states and 638 transitions. [2022-03-15 21:02:55,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-03-15 21:02:55,744 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 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 21:02:55,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:02:55,745 INFO L225 Difference]: With dead ends: 294 [2022-03-15 21:02:55,745 INFO L226 Difference]: Without dead ends: 292 [2022-03-15 21:02:55,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13075 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=4218, Invalid=37602, Unknown=0, NotChecked=0, Total=41820 [2022-03-15 21:02:55,747 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 742 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 21:02:55,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 0 Invalid, 3618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 2905 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 21:02:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-03-15 21:02:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 154. [2022-03-15 21:02:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.320261437908497) internal successors, (355), 153 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 355 transitions. [2022-03-15 21:02:55,757 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 355 transitions. Word has length 16 [2022-03-15 21:02:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:02:55,757 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 355 transitions. [2022-03-15 21:02:55,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:02:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 355 transitions. [2022-03-15 21:02:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 21:02:55,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:02:55,758 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:02:55,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-15 21:02:55,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 21:02:55,966 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:02:55,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:02:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash 728506991, now seen corresponding path program 13 times [2022-03-15 21:02:55,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:02:55,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869089696] [2022-03-15 21:02:55,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:02:55,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:02:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:02:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:02:56,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:02:56,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869089696] [2022-03-15 21:02:56,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869089696] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:02:56,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579307090] [2022-03-15 21:02:56,064 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:02:56,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:02:56,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:02:56,065 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:02:56,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 21:02:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:02:56,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 21:02:56,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:02:56,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:02:56,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2022-03-15 21:02:56,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:02:56,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 2 [2022-03-15 21:02:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:02:56,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:02:56,320 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 21:02:56,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2022-03-15 21:02:56,324 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 21:02:56,324 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-03-15 21:02:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:02:56,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579307090] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:02:56,376 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:02:56,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-15 21:02:56,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1536066199] [2022-03-15 21:02:56,377 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:02:56,377 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:02:56,382 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 94 transitions. [2022-03-15 21:02:56,382 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:02:58,065 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 22 new interpolants: [7276#(and (or (not break_7) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (not break_7) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (<= i_9 2) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (<= i_9 2) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 7281#(or (not (= (select o_2 3) (select o_0 3))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))), 7268#(and (or (<= i_9 0) (<= 5 i_9) break_7 break_4) (or (<= 5 i_9) break_7 break_4 (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (<= 5 i_9) break_7 break_4 (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))))), 7273#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 7278#(and (or (not break_7) (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= i_9 2) (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (not break_7) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= i_9 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 7280#(and (or (<= i_9 2) (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (< i_6 0) (<= i_9 2) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not break_7) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= 1 i_6) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0))) (or (< i_6 0) (not break_7) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= 1 i_6) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)))), 7287#(and (< i_6 2) (<= 1 i_6)), 7266#(and (or (<= i_9 0) (<= 5 i_9) break_7) (or (<= 5 i_9) break_7 (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1)))) (or (<= 5 i_9) break_7 (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1))))), 7284#(and (<= i_9 0) (<= 0 i_9)), 7275#(and (or (not break_7) (not break_4)) (or (<= i_9 2) (not (<= 5 i_6))) (or (<= i_9 2) (not break_4)) (or (not break_7) (not (<= 5 i_6)))), 7274#(and (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= 1 i_6) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0))) (or (< i_6 0) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= 1 i_6) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)))), 7269#(and (not (<= 5 i_6)) (not break_4)), 7271#(and (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)))), 7283#(and (<= i_9 1) (<= 1 i_9)), 7270#(and (or (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4)), 7277#(and (or (<= i_9 2) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (not break_7) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (not break_7) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4))) (or (<= i_9 2) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 7282#(and (or (not (= (select o_2 3) (select o_0 3))) (not break_7) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (not (= (select o_2 3) (select o_0 3))) (<= i_9 2) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))))), 7272#(and (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 7267#(and (<= (select o_0 1) (select o_2 1)) (<= (select o_2 1) (select o_0 1))), 7279#(and (or (not break_7) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (not break_7) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= i_9 2) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= i_9 2) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 7286#(and (or (<= (select o_2 1) (select o_0 1)) break_4) (or (<= (select o_0 1) (select o_2 1)) break_4)), 7285#(and (or (< i_6 (+ 2 i_9)) (<= 5 i_9) break_7) (or (<= i_9 0) (<= 5 i_9) break_7) (or (<= 5 i_9) break_7 (<= (+ i_9 1) i_6)))] [2022-03-15 21:02:58,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 21:02:58,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:02:58,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 21:02:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1582, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 21:02:58,066 INFO L87 Difference]: Start difference. First operand 154 states and 355 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:03:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:03:10,989 INFO L93 Difference]: Finished difference Result 321 states and 637 transitions. [2022-03-15 21:03:10,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-03-15 21:03:10,990 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 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 21:03:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:03:10,991 INFO L225 Difference]: With dead ends: 321 [2022-03-15 21:03:10,991 INFO L226 Difference]: Without dead ends: 321 [2022-03-15 21:03:10,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9912 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=2782, Invalid=27320, Unknown=0, NotChecked=0, Total=30102 [2022-03-15 21:03:10,993 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 310 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:03:10,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 0 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 21:03:10,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-03-15 21:03:10,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 143. [2022-03-15 21:03:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.267605633802817) internal successors, (322), 142 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:03:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 322 transitions. [2022-03-15 21:03:10,996 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 322 transitions. Word has length 16 [2022-03-15 21:03:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:03:10,996 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 322 transitions. [2022-03-15 21:03:10,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:03:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 322 transitions. [2022-03-15 21:03:10,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 21:03:10,997 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:03:10,997 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:03:11,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-15 21:03:11,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 21:03:11,198 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:03:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:03:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1206518254, now seen corresponding path program 14 times [2022-03-15 21:03:11,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:03:11,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033506295] [2022-03-15 21:03:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:03:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:03:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:03:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:03:11,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:03:11,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033506295] [2022-03-15 21:03:11,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033506295] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:03:11,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722992129] [2022-03-15 21:03:11,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:03:11,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:03:11,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:03:11,455 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:03:11,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 21:03:11,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:03:11,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:03:11,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-15 21:03:11,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:03:11,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:03:11,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2022-03-15 21:03:11,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:03:11,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 5 [2022-03-15 21:03:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:03:11,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:03:12,160 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:03:12,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 37 [2022-03-15 21:03:12,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2022-03-15 21:03:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:03:12,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722992129] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:03:12,207 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:03:12,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-03-15 21:03:12,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1649389323] [2022-03-15 21:03:12,207 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:03:12,208 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:03:12,212 INFO L252 McrAutomatonBuilder]: Finished intersection with 66 states and 113 transitions. [2022-03-15 21:03:12,212 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:03:18,658 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 36 new interpolants: [8325#(and (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (+ (select o_2 (+ i_6 1)) 1) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (select o_0 3) (select o_2 3))) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (+ (select o_0 (+ i_6 1)) (select o_2 3)) (+ (select o_2 (+ i_6 1)) (select o_0 3)))) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (= i_9 0))), 8305#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (+ result_8 1) 0) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (+ (select o_0 (+ i_6 1)) 1) (select o_2 (+ i_6 1)))) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (+ (select o_2 (+ i_6 1)) 1) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= 1 result_8))), 8310#(and (or (< i_6 2) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= (+ result_8 1) 0) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (+ (select o_0 (+ 2 i_6)) 1) (select o_2 (+ 2 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= (+ (select o_2 (+ 2 i_6)) 1) (select o_0 (+ 2 i_6))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 result_8) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 8293#(and (or (<= 1 result_5) (not break_4) (<= 1 result_8)) (or break_4 (not (<= 5 i_6))) (or (<= (+ result_8 1) 0) (not break_4) (<= (+ result_5 1) 0))), 8311#(and (or (not break_7) (< i_6 2) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (< i_6 2) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_7 break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (not (<= 5 i_9))) (or (not break_7) (<= (+ (select o_0 (+ 2 i_6)) result_8) (select o_2 (+ 2 i_6))) (<= (+ result_8 1) 0) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (not break_7) (<= (+ (select o_2 (+ 2 i_6)) 1) (select o_0 (+ 2 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 result_8) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_7 break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (not (<= 5 i_9)) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 8299#(and (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_7 break_4 (not (<= 5 i_9))) (or (not break_7) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ result_8 (select o_0 i_6)) (select o_2 i_6)) (not (< i_6 5)) (<= (+ result_8 1) 0) break_4) (or (not break_7) (not (< i_6 5)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 4 i_6))) (or (not break_7) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (+ (select o_2 i_6) 1) (select o_0 i_6)) break_4 (<= 1 result_8)) (or (not (< i_6 5)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 4 i_6)) (not (<= 5 i_9)))), 8318#(and (or (= (select o_2 3) (select o_0 3)) (<= (+ 1 (select o_0 3)) (select o_2 3)) (not (= (select o_2 0) (select o_0 0))) (<= (+ result_8 1) 0) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (<= (+ (select o_2 3) 1) (select o_0 3)) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))) (<= 1 result_8))), 8326#(and (or (< i_6 2) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= (+ (select o_2 (+ 2 i_6)) 1) (select o_0 (+ 2 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (select o_0 3) (select o_2 3)) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) (<= (+ (select o_0 (+ 2 i_6)) (select o_2 3)) (+ (select o_2 (+ 2 i_6)) (select o_0 3))) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= i_9 0) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 8300#(and (or (not (< i_6 5)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= i_9 3)) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (+ (select o_0 i_6) (select o_2 i_9)) (+ (select o_2 i_6) (select o_0 i_9)))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (+ (select o_2 i_6) 1) (select o_0 i_6)) break_4 (<= (select o_0 i_9) (select o_2 i_9)))), 8315#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (+ (select o_2 (+ 3 i_6)) 1) (select o_0 (+ 3 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 result_8)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (<= (+ result_8 1) 0) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (+ (select o_0 (+ 3 i_6)) 1) (select o_2 (+ 3 i_6)))) (or (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1))), 8295#(and (or (<= (select o_0 i_9) (select o_2 i_9)) (<= 1 result_5) (not break_4)) (or (<= (+ result_5 (select o_2 i_9)) (select o_0 i_9)) (not break_4)) (or break_4 (not (<= 5 i_6))) (or (not break_4) (<= i_9 3)) (or (<= 1 result_5) (not break_4) (<= (+ result_5 1) 0))), 8316#(and (or (not break_7) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (< i_6 1) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_7 break_4 (< i_6 1) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (not (<= 5 i_9))) (or (not break_7) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= (+ (select o_2 (+ 3 i_6)) 1) (select o_0 (+ 3 i_6))) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (<= 1 result_8)) (or (not break_7) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (<= (+ result_8 1) 0) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= (+ (select o_0 (+ 3 i_6)) result_8) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_7 break_4 (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (not (<= 5 i_9)))), 8327#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= (+ (select o_2 (+ 3 i_6)) 1) (select o_0 (+ 3 i_6))) (<= (select o_0 3) (select o_2 3)) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (<= (+ (select o_0 (+ 3 i_6)) (select o_2 3)) (+ (select o_2 (+ 3 i_6)) (select o_0 3)))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (= i_9 0)) (or (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (< i_6 1) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)))), 8328#(or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) 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(select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (<= (select o_0 (+ 2 i_9)) (select o_2 (+ 2 i_9))) (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (<= (+ (select o_2 3) 1) (select o_0 3)) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (<= (+ (select o_2 (+ 2 i_9)) (select o_0 3)) (+ (select o_2 3) (select o_0 (+ 2 i_9)))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))))), 8306#(and (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_7 break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (not (<= 5 i_9))) (or (< i_6 3) break_7 break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (not (<= 5 i_9))) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (not break_7) (<= (+ (select o_2 (+ i_6 1)) 1) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= 1 result_8)) (or (<= (+ (select o_0 (+ i_6 1)) result_8) (select o_2 (+ i_6 1))) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (not break_7) (<= (+ result_8 1) 0) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (not break_7) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 4 i_6))), 8312#(and (or (< i_6 2) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= i_9 3) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= (+ (select o_2 (+ 2 i_6)) 1) (select o_0 (+ 2 i_6))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= (+ (select o_0 (+ 2 i_6)) (select o_2 i_9)) (+ (select o_0 i_9) (select o_2 (+ 2 i_6)))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))))] [2022-03-15 21:03:18,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 21:03:18,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:03:18,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 21:03:18,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=4107, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 21:03:18,659 INFO L87 Difference]: Start difference. First operand 143 states and 322 transitions. Second operand has 50 states, 49 states have (on average 2.061224489795918) internal successors, (101), 50 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:07:07,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:07:07,053 INFO L93 Difference]: Finished difference Result 816 states and 1539 transitions. [2022-03-15 21:07:07,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 371 states. [2022-03-15 21:07:07,054 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.061224489795918) internal successors, (101), 50 states have internal predecessors, (101), 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 21:07:07,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:07:07,070 INFO L225 Difference]: With dead ends: 816 [2022-03-15 21:07:07,070 INFO L226 Difference]: Without dead ends: 705 [2022-03-15 21:07:07,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 422 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67663 ImplicationChecksByTransitivity, 222.3s TimeCoverageRelationStatistics Valid=13418, Invalid=165934, Unknown=0, NotChecked=0, Total=179352 [2022-03-15 21:07:07,081 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 924 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 12674 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 12674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:07:07,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 0 Invalid, 13533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [859 Valid, 12674 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-03-15 21:07:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-15 21:07:07,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 234. [2022-03-15 21:07:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.575107296137339) internal successors, (600), 233 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:07:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 600 transitions. [2022-03-15 21:07:07,115 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 600 transitions. Word has length 17 [2022-03-15 21:07:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:07:07,115 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 600 transitions. [2022-03-15 21:07:07,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.061224489795918) internal successors, (101), 50 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:07:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 600 transitions. [2022-03-15 21:07:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 21:07:07,116 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:07:07,116 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:07:07,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 21:07:07,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:07:07,328 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:07:07,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:07:07,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1951206770, now seen corresponding path program 15 times [2022-03-15 21:07:07,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:07:07,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225608905] [2022-03-15 21:07:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:07:07,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:07:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:07:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:07:07,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:07:07,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225608905] [2022-03-15 21:07:07,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225608905] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:07:07,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133891285] [2022-03-15 21:07:07,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:07:07,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:07:07,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:07:07,482 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:07:07,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 21:07:07,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 21:07:07,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:07:07,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 21:07:07,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:07:07,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:07:07,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2022-03-15 21:07:07,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:07:07,746 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 2 [2022-03-15 21:07:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:07:07,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:07:07,869 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 21:07:07,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2022-03-15 21:07:07,873 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 21:07:07,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-03-15 21:07:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:07:07,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133891285] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:07:07,939 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:07:07,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-15 21:07:07,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1074944337] [2022-03-15 21:07:07,939 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:07:07,940 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:07:07,944 INFO L252 McrAutomatonBuilder]: Finished intersection with 65 states and 111 transitions. [2022-03-15 21:07:07,944 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:07:12,658 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 33 new interpolants: [10479#(and (or (<= i_9 1) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (<= i_9 1) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (not (< i_6 5)) break_4 (not (<= 4 i_6)) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1)))) (or (not (< i_6 5)) break_4 (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1))))), 10476#(and (or (<= (select o_0 i_9) (select o_2 i_9)) (not break_4)) (or (<= (select o_2 i_9) (select o_0 i_9)) (not break_4)) (or (<= i_9 2) (not (<= 5 i_6))) (or (<= i_9 2) (not break_4)) (or (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 5 i_6))) (or (not (<= 5 i_6)) (<= (select o_2 i_9) (select o_0 i_9)))), 10468#(and (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (not break_7) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= i_9 3)) (or (not break_7) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4))) (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= i_9 3))), 10471#(and (or (< i_6 0) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= i_9 3)) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= i_9 3)) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not break_7) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (< i_6 0) (not break_7) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6))), 10488#(and (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (<= i_9 1) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (< i_6 0) (<= i_9 1) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (< i_6 0) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (< i_6 0) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1))))), 10475#(and (<= 2 i_6) (<= i_6 2)), 10463#(and (<= (select o_2 2) (select o_0 2)) (<= (select o_0 2) (select o_2 2))), 10484#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (select o_2 i_9) (select o_0 i_9))) (or (<= i_9 2) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1) (<= (select o_2 i_9) (select o_0 i_9))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= i_9 2) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1))), 10482#(and (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (<= 3 i_6)) (not (< i_6 4))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= i_9 1) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4)) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (<= i_9 1) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= (select o_0 (+ 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o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (< i_6 0) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (select o_2 i_9) (select o_0 i_9))) (or (< i_6 0) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (select o_2 i_9) (select o_0 i_9))) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)))] [2022-03-15 21:07:12,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-15 21:07:12,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:07:12,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-15 21:07:12,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3139, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 21:07:12,660 INFO L87 Difference]: Start difference. First operand 234 states and 600 transitions. Second operand has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 44 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:07:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:07:33,167 INFO L93 Difference]: Finished difference Result 439 states and 1001 transitions. [2022-03-15 21:07:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-03-15 21:07:33,167 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 44 states have internal predecessors, (95), 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 21:07:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:07:33,170 INFO L225 Difference]: With dead ends: 439 [2022-03-15 21:07:33,170 INFO L226 Difference]: Without dead ends: 436 [2022-03-15 21:07:33,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 18462 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=5925, Invalid=50481, Unknown=0, NotChecked=0, Total=56406 [2022-03-15 21:07:33,174 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 636 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 3190 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 3190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 21:07:33,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 0 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 3190 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 21:07:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-03-15 21:07:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 146. [2022-03-15 21:07:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.193103448275862) internal successors, (318), 145 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:07:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 318 transitions. [2022-03-15 21:07:33,178 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 318 transitions. Word has length 17 [2022-03-15 21:07:33,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:07:33,178 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 318 transitions. [2022-03-15 21:07:33,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 44 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:07:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 318 transitions. [2022-03-15 21:07:33,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:07:33,178 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:07:33,178 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:07:33,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 21:07:33,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 21:07:33,400 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:07:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:07:33,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1252314937, now seen corresponding path program 16 times [2022-03-15 21:07:33,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:07:33,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46860717] [2022-03-15 21:07:33,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:07:33,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:07:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:07:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:07:33,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:07:33,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46860717] [2022-03-15 21:07:33,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46860717] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:07:33,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021666880] [2022-03-15 21:07:33,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:07:33,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:07:33,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:07:33,535 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:07:33,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 21:07:33,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:07:33,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:07:33,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 21:07:33,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:07:33,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2022-03-15 21:07:33,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-03-15 21:07:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:07:33,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:07:33,840 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:07:33,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 43 [2022-03-15 21:07:33,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-03-15 21:07:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:07:33,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021666880] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:07:33,867 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:07:33,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-03-15 21:07:33,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1968738581] [2022-03-15 21:07:33,867 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:07:33,868 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:07:33,874 INFO L252 McrAutomatonBuilder]: Finished intersection with 74 states and 128 transitions. [2022-03-15 21:07:33,874 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:07:38,692 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 36 new interpolants: [11716#(and (or (= (select o_2 i_6) (select o_0 i_6)) (not (< i_6 5)) break_4) (or (not (< i_6 5)) (< i_6 4) break_4)), 11721#(and (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_7 break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (< i_6 3) break_7 break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 11738#(and (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= 2 i_6) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= 2 i_6) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 11718#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (< i_6 5)) break_4 (<= (+ (select o_2 i_9) 1) (select o_0 i_9)) (not (<= 4 i_6))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (< i_6 5)) break_4 (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 11746#(or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (= (select o_2 3) (select o_0 3)) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))), 11740#(and (or (not break_4) (= i_9 0)) (or (not (<= 5 i_6)) (= i_9 0)) (or (<= (+ 1 (select o_0 3)) (select o_2 3)) (<= (+ (select o_2 3) 1) (select o_0 3)) (not (<= 5 i_6))) (or (<= (+ 1 (select o_0 3)) (select o_2 3)) (<= (+ (select o_2 3) 1) (select o_0 3)) (not break_4))), 11719#(and (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) break_4) (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (not (< i_6 5)) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) break_4 (not (<= 4 i_6)))), 11728#(and (or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (not (<= 5 i_6))) (or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (not break_4))), 11736#(or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) break_7 (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))), 11742#(and (or (<= (+ 1 (select o_0 3)) (select o_2 3)) (< i_6 3) break_4 (<= (+ (select o_2 3) 1) (select o_0 3)) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (+ 1 (select o_0 3)) (select o_2 3)) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (+ (select o_2 3) 1) (select o_0 3)) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (= i_9 0))), 11725#(and (or (<= 3 i_6) break_7 break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (<= 3 i_6) break_7 break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 11739#(or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (= (select o_2 3) (select o_0 3)) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))), 11722#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))) (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 11712#(and (not (<= 5 i_6)) (not break_4)), 11737#(or (= (select o_2 3) (select o_0 3)) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))), 11729#(and (or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) break_4) (or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (not (< i_6 5)) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) break_4 (not (<= 4 i_6)))), 11723#(and (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4)))), 11741#(and (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) (<= (+ 1 (select o_0 3)) (select o_2 3)) break_4 (<= (+ (select o_2 3) 1) (select o_0 3))) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (= i_9 0)) (or (not (< i_6 5)) break_4 (not (<= 4 i_6)) (= i_9 0)) (or (not (< i_6 5)) (<= (+ 1 (select o_0 3)) (select o_2 3)) break_4 (<= (+ (select o_2 3) 1) (select o_0 3)) (not (<= 4 i_6)))), 11726#(and (or (not (<= 2 i_6)) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)) (not (< i_6 3))) (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (= (+ (select o_0 (+ 2 i_6)) (* (- 1) (select o_2 (+ 2 i_6)))) 0) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)) (not (< i_6 3)))), 11744#(and (or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (<= 2 i_6) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (<= 2 i_6) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1))), 11735#(or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))), 11734#(and (or (not (< i_6 2)) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (+ (select o_0 (+ 2 i_6)) (* (- 1) (select o_2 (+ 2 i_6)))) 0)) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)) (= (+ (* (- 1) (select o_2 (+ 3 i_6))) (select o_0 (+ 3 i_6))) 0)) (or (not (< i_6 2)) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 1 i_6)) (not (= (+ (select o_0 (+ 2 i_6)) (* (- 1) (select o_2 (+ 2 i_6)))) 0)) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 11713#(and (or break_7 (not break_4)) (or break_7 (not (<= 5 i_6)))), 11745#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= i_9 0)) (or (<= 2 i_6) (<= (+ 1 (select o_0 3)) (select o_2 3)) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (+ (select o_2 3) 1) (select o_0 3)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= 2 i_6) (<= (+ 1 (select o_0 3)) (select o_2 3)) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (+ (select o_2 3) 1) (select o_0 3)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 11730#(and (or (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0) (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (< i_6 4))) (or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4)))), 11732#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 11727#(and (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (< i_6 2) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 11714#(and (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (<= 5 i_6)) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))) (or (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not break_4) (<= (+ (select o_2 i_9) 1) (select o_0 i_9)))), 11724#(and (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 11715#(and (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not (<= 5 i_6))) (or (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not break_4))), 11731#(and (or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (< i_6 2) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 11717#(and (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_7 break_4) (or (not (< i_6 5)) break_7 break_4 (not (<= 4 i_6)))), 11733#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_7 break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_7 break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 11743#(and (or (<= (+ 1 (select o_0 3)) (select o_2 3)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (<= (+ (select o_2 3) 1) (select o_0 3)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= i_9 0) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (<= (+ 1 (select o_0 3)) (select o_2 3)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) (<= 3 i_6) break_4 (<= (+ (select o_2 3) 1) (select o_0 3)))), 11720#(and (or (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 11747#(or (= (select o_2 3) (select o_0 3)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))) (= i_9 0))] [2022-03-15 21:07:38,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 21:07:38,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:07:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 21:07:38,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2750, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 21:07:38,693 INFO L87 Difference]: Start difference. First operand 146 states and 318 transitions. Second operand has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:07:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:07:49,525 INFO L93 Difference]: Finished difference Result 290 states and 587 transitions. [2022-03-15 21:07:49,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-03-15 21:07:49,525 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:07:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:07:49,526 INFO L225 Difference]: With dead ends: 290 [2022-03-15 21:07:49,526 INFO L226 Difference]: Without dead ends: 277 [2022-03-15 21:07:49,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8018 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2921, Invalid=26491, Unknown=0, NotChecked=0, Total=29412 [2022-03-15 21:07:49,527 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 735 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 5366 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 5366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-15 21:07:49,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 0 Invalid, 5770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 5366 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-15 21:07:49,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-03-15 21:07:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 129. [2022-03-15 21:07:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 2.140625) internal successors, (274), 128 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:07:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 274 transitions. [2022-03-15 21:07:49,530 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 274 transitions. Word has length 18 [2022-03-15 21:07:49,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:07:49,530 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 274 transitions. [2022-03-15 21:07:49,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:07:49,531 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 274 transitions. [2022-03-15 21:07:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:07:49,531 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:07:49,531 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:07:49,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 21:07:49,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 21:07:49,747 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:07:49,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:07:49,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1027712817, now seen corresponding path program 17 times [2022-03-15 21:07:49,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:07:49,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472916561] [2022-03-15 21:07:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:07:49,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:07:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:07:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:07:49,886 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:07:49,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472916561] [2022-03-15 21:07:49,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472916561] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:07:49,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016140026] [2022-03-15 21:07:49,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:07:49,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:07:49,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:07:49,936 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:07:49,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 21:07:49,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 21:07:49,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:07:49,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 21:07:49,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:07:50,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2022-03-15 21:07:50,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-03-15 21:07:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:07:50,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:07:50,216 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:07:50,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2022-03-15 21:07:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:07:50,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016140026] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:07:50,233 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:07:50,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2022-03-15 21:07:50,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1258309048] [2022-03-15 21:07:50,233 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:07:50,234 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:07:50,239 INFO L252 McrAutomatonBuilder]: Finished intersection with 74 states and 128 transitions. [2022-03-15 21:07:50,239 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:08:00,000 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 42 new interpolants: [12676#(and (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= i_9 2) (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= i_9 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 12665#(and (or (not break_7) (not (< i_6 5)) break_4 (not (<= 4 i_6))) (or (not (< i_6 5)) break_4 (not (<= 4 i_6)) (not (<= 5 i_9))) (or (not break_7) (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4) (or (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0) (not (< i_6 5)) break_4 (not (<= 5 i_9)))), 12692#(and (or (not (= (select o_2 3) (select o_0 3))) (<= i_9 1) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (not (= (select o_2 3) (select o_0 3))) (<= (select o_0 (+ 2 i_9)) (select o_2 (+ 2 i_9))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (not (= (select o_2 3) (select o_0 3))) (not (= (select o_2 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break_4 (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1))))), 12659#(and (or (<= (select o_0 i_9) (select o_2 i_9)) (not break_4)) (or (<= (select o_2 i_9) (select o_0 i_9)) (not break_4)) (or (not (<= 5 i_6)) (<= i_9 3)) (or (<= (select o_0 i_9) (select o_2 i_9)) (not (<= 5 i_6))) (or (not break_4) (<= i_9 3)) (or (not (<= 5 i_6)) (<= (select o_2 i_9) (select o_0 i_9)))), 12698#(or (not (= (select o_2 3) (select o_0 3))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))) (= i_9 0)), 12657#(and (not (<= 5 i_6)) (not break_4)), 12682#(or (not (= (select o_2 3) (select o_0 3))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))), 12664#(and (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 12673#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= i_9 3)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= (select o_2 i_9) (select o_0 i_9))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1) (<= i_9 3)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 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o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1))), 12672#(and (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (not (<= 5 i_9))) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1) (not (<= 5 i_9))) (or (not break_7) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (not break_7) (<= 2 i_6) (not (= (select o_0 (+ 2 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break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (< i_6 1)) (or (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (<= i_9 2) (<= 2 i_6) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))))), 12667#(and (or (not break_7) (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))))) (or (not break_7) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (or (< i_6 2) (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (not (<= 5 i_9))) (or (<= 3 i_6) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (not (<= 5 i_9)) (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6))))), 12697#(and (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= 1 i_6) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (= i_9 0)) (or (<= (select o_2 3) (select o_0 3)) (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= 1 i_6) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0))) (or (< i_6 0) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= 1 i_6) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (= i_9 0)) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= 1 i_6) (<= (select o_0 3) (select o_2 3)) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)))), 12661#(and (or (<= (select o_0 (+ 2 i_9)) (select o_2 (+ 2 i_9))) (not (<= 5 i_6))) (or (<= (select o_0 (+ 2 i_9)) (select o_2 (+ 2 i_9))) (not break_4)) (or (<= i_9 1) (not break_4)) (or (<= (select o_2 (+ 2 i_9)) (select o_0 (+ 2 i_9))) (not (<= 5 i_6))) (or (<= (select o_2 (+ 2 i_9)) (select o_0 (+ 2 i_9))) (not break_4)) (or (<= i_9 1) (not (<= 5 i_6)))), 12691#(and (or (not (= (select o_2 3) (select o_0 3))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (not (= (select o_2 3) (select o_0 3))) (<= i_9 2) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (not (= (select o_2 3) (select o_0 3))) (not (= (select o_2 0) (select o_0 0))) (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))))] [2022-03-15 21:08:00,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-15 21:08:00,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:08:00,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-15 21:08:00,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=3273, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 21:08:00,001 INFO L87 Difference]: Start difference. First operand 129 states and 274 transitions. Second operand has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 55 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:08:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:08:36,589 INFO L93 Difference]: Finished difference Result 463 states and 971 transitions. [2022-03-15 21:08:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 265 states. [2022-03-15 21:08:36,589 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 55 states have internal predecessors, (114), 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 21:08:36,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:08:36,591 INFO L225 Difference]: With dead ends: 463 [2022-03-15 21:08:36,591 INFO L226 Difference]: Without dead ends: 459 [2022-03-15 21:08:36,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34084 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=10574, Invalid=87708, Unknown=0, NotChecked=0, Total=98282 [2022-03-15 21:08:36,595 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1204 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 1025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 21:08:36,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 0 Invalid, 4907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1025 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-15 21:08:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-03-15 21:08:36,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 184. [2022-03-15 21:08:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.2349726775956285) internal successors, (409), 183 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:08:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 409 transitions. [2022-03-15 21:08:36,612 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 409 transitions. Word has length 18 [2022-03-15 21:08:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:08:36,612 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 409 transitions. [2022-03-15 21:08:36,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 55 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:08:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 409 transitions. [2022-03-15 21:08:36,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 21:08:36,613 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:08:36,613 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:08:36,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 21:08:36,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:08:36,829 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:08:36,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:08:36,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1794001402, now seen corresponding path program 18 times [2022-03-15 21:08:36,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:08:36,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528112741] [2022-03-15 21:08:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:08:36,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:08:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:08:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:08:37,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:08:37,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528112741] [2022-03-15 21:08:37,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528112741] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:08:37,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562007324] [2022-03-15 21:08:37,201 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:08:37,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:08:37,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:08:37,202 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:08:37,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 21:08:37,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 21:08:37,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:08:37,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-15 21:08:37,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:08:37,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:08:37,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2022-03-15 21:08:37,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-15 21:08:37,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-03-15 21:08:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:08:37,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:08:38,130 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-03-15 21:08:38,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 105 [2022-03-15 21:08:38,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 80 [2022-03-15 21:08:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:08:38,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562007324] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:08:38,157 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:08:38,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-03-15 21:08:38,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [108944371] [2022-03-15 21:08:38,157 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:08:38,158 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:08:38,165 INFO L252 McrAutomatonBuilder]: Finished intersection with 83 states and 145 transitions. [2022-03-15 21:08:38,165 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:08:55,650 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 49 new interpolants: [14192#(and (or break_7 (<= 0 result_5) (not break_4)) (or break_7 (not break_4) (<= result_5 0)) (or break_4 (not (<= 5 i_6)) (<= result_8 0)) (or (not break_7) (< 0 result_8) (<= (+ result_8 1) 0) (not break_4)) (or (not break_7) (< 0 result_8) (<= 0 (+ result_8 result_5)) (not break_4)) (or (<= (+ result_8 result_5) 0) (not break_4) (<= result_8 0)) (or (not break_7) break_4 (not (<= 5 i_6)))), 14210#(and (or (<= (select o_0 (+ 3 i_9)) (select o_2 (+ 3 i_9))) (< i_6 3) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 4 i_6)) (or (<= (+ (select o_0 (+ i_6 1)) (select o_2 (+ 3 i_9))) (+ (select o_2 (+ i_6 1)) (select o_0 (+ 3 i_9)))) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (select o_2 (+ 3 i_9)) (select o_0 (+ 3 i_9))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (< i_6 3) (<= (select o_2 (+ 3 i_9)) (select o_0 (+ 3 i_9))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 4 i_6)) (or (<= (+ (select o_0 (+ 3 i_9)) 1) (select o_2 (+ 3 i_9))) (<= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6)) (or (<= (select o_0 (+ 3 i_9)) (select o_2 (+ 3 i_9))) (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6) (<= (+ (select o_2 (+ i_6 1)) (select o_0 (+ 3 i_9))) (+ (select o_0 (+ i_6 1)) (select o_2 (+ 3 i_9))))) (or (<= (select o_0 (+ i_6 1)) (select o_2 (+ i_6 1))) (<= (+ (select o_2 (+ 3 i_9)) 1) (select o_0 (+ 3 i_9))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= 4 i_6))), 14235#(and (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (<= (select o_2 (+ 3 i_9)) (select o_0 (+ 3 i_9))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (+ (select o_0 (+ i_6 4)) (select o_2 (+ 3 i_9))) (+ (select o_0 (+ 3 i_9)) (select o_2 (+ i_6 4))))) (or (<= (+ (select o_2 (+ 3 i_9)) 1) (select o_0 (+ 3 i_9))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (<= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (<= (+ (select o_0 (+ 3 i_9)) 1) (select o_2 (+ 3 i_9))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (select o_2 (+ i_6 4)) (select o_0 (+ i_6 4)))) (or (< i_6 0) (not (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4)))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (<= (select o_2 (+ 3 i_9)) (select o_0 (+ 3 i_9))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (<= (select o_0 (+ 3 i_9)) (select o_2 (+ 3 i_9))) (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (+ (select o_0 (+ 3 i_9)) (select o_2 (+ i_6 4))) (+ (select o_0 (+ i_6 4)) (select o_2 (+ 3 i_9))))) (or (<= (select o_0 (+ 3 i_9)) (select o_2 (+ 3 i_9))) (< i_6 0) (not (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4)))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6))), 14237#(and (or (not (= (select o_2 3) (select o_0 3))) (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (<= (select o_2 4) (select o_0 4)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (not (= (select o_2 3) (select o_0 3))) (<= (select o_0 4) (select o_2 4)) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (not (= (select o_2 3) (select o_0 3))) (not (= (select o_2 0) (select o_0 0))) (<= (+ (select o_2 (+ 2 i_9)) (select o_0 4)) (+ (select o_2 4) (select o_0 (+ 2 i_9)))) (<= (select o_2 (+ 2 i_9)) (select o_0 (+ 2 i_9))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (not (= (select o_2 3) (select o_0 3))) (<= (select o_0 (+ 2 i_9)) (select o_2 (+ 2 i_9))) (<= (+ (select o_2 4) (select o_0 (+ 2 i_9))) (+ (select o_2 (+ 2 i_9)) (select o_0 4))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))))), 14236#(and (or (not (< i_6 5)) (<= (select o_2 4) (select o_0 4)) (not (= (+ (* (- 1) (select o_2 (+ 3 i_6))) (select o_0 (+ 3 i_6))) 0)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (= (+ (select o_0 (+ 2 i_6)) (* (- 1) (select o_2 (+ 2 i_6)))) 0)) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (<= (+ (select o_0 (+ i_6 4)) (select o_2 4)) (+ (select o_0 4) (select o_2 (+ i_6 4)))) (= (+ (* (- 1) (select o_2 (+ i_6 4))) (select o_0 (+ i_6 4))) 0)) (or (< i_6 0) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (= i_9 0)) (or (<= (select o_0 4) (select o_2 4)) (not (< i_6 5)) (not (= (+ (* (- 1) (select o_2 (+ 3 i_6))) (select o_0 (+ 3 i_6))) 0)) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= (+ (select o_0 4) (select o_2 (+ i_6 4))) (+ (select o_0 (+ i_6 4)) (select o_2 4))) (not (= (+ (select o_0 (+ 2 i_6)) (* (- 1) (select o_2 (+ 2 i_6)))) 0)) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (= (+ (* (- 1) (select o_2 (+ i_6 4))) (select o_0 (+ i_6 4))) 0)) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (<= (+ (select o_2 4) 1) (select o_0 4)) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (+ (select o_0 4) 1) (select o_2 4))) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (= i_9 0))), 14231#(and (or (not (= (select o_2 3) (select o_0 3))) (<= (select o_0 4) (select o_2 4)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))) (or (not (= (select o_2 3) (select o_0 3))) (not (= (select o_2 0) (select o_0 0))) (<= (+ (select o_0 4) (select o_2 i_9)) (+ (select o_0 i_9) (select o_2 4))) (not (= (select o_2 1) (select o_0 1))) (<= (select o_2 i_9) (select o_0 i_9)) (not (= (select o_2 2) (select o_0 2)))) (or (not (= (select o_2 3) (select o_0 3))) (not (= (select o_2 0) (select o_0 0))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))) (<= (+ (select o_0 i_9) (select o_2 4)) (+ (select o_0 4) (select o_2 i_9)))) (or (not (= (select o_2 3) (select o_0 3))) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (<= (select o_2 4) (select o_0 4)) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))))), 14229#(and (or (not (= (select o_2 3) (select o_0 3))) (<= (select o_0 4) (select o_2 4)) (not (= (select o_2 0) (select o_0 0))) (<= (+ result_8 1) 0) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (not (= (select o_2 3) (select o_0 3))) (not (= (select o_0 4) (select o_2 4))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2))) (<= result_8 0)) (or (not (= (select o_2 3) (select o_0 3))) (<= 0 result_8) (not (= (select o_0 4) (select o_2 4))) (not (= (select o_2 0) (select o_0 0))) (not (= (select o_2 1) (select o_0 1))) (not (= (select o_2 2) (select o_0 2)))) (or (not (= (select o_2 3) (select o_0 3))) (<= (select o_2 4) (select o_0 4)) 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(select o_0 (+ i_6 1)) (select o_2 (+ i_9 1)))) break_4 (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (< i_6 4))) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (not (<= 3 i_6)) (not (< i_6 4)) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0)) (<= (select o_2 (+ i_9 1)) (select o_0 (+ i_9 1)))) (or (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= (select o_0 (+ i_9 1)) (select o_2 (+ i_9 1))) (not (<= 3 i_6)) (not (< i_6 4)) (not (= (+ (select o_0 (+ i_6 1)) (* (- 1) (select o_2 (+ i_6 1)))) 0))) (or (<= (select o_0 (+ i_6 1)) (select o_2 (+ i_6 1))) (<= (+ 1 (select o_2 (+ i_9 1))) (select o_0 (+ i_9 1))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= 4 i_6)) (or (<= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1))) (<= (+ (select o_0 (+ i_9 1)) 1) (select o_2 (+ i_9 1))) (not (= (+ (select o_0 i_6) (* (- 1) (select o_2 i_6))) 0)) break_4 (<= 4 i_6))), 14228#(and (or (< i_6 0) (not (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4)))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (<= (+ (select o_0 (+ i_6 4)) (select o_2 i_9)) (+ (select o_0 i_9) (select o_2 (+ i_6 4)))) (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (select o_2 i_9) (select o_0 i_9))) (or (< i_6 0) (not (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4)))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (select o_2 i_9) (select o_0 i_9))) (or (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (<= (+ (select o_0 i_9) 1) (select o_2 i_9)) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (select o_2 (+ i_6 4)) (select o_0 (+ i_6 4)))) (or (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (<= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (+ (select o_2 i_9) 1) (select o_0 i_9))) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (<= (+ (select o_0 i_9) (select o_2 (+ i_6 4))) (+ (select o_0 (+ i_6 4)) (select o_2 i_9))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_0 i_9) (select o_2 i_9)) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6))), 14234#(and (or (<= (select o_0 (+ 2 i_9)) (select o_2 (+ 2 i_9))) (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (+ (select o_0 (+ 2 i_9)) (select o_2 (+ i_6 4))) (+ (select o_2 (+ 2 i_9)) (select o_0 (+ i_6 4)))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (<= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (<= (+ (select o_2 (+ 2 i_9)) 1) (select o_0 (+ 2 i_9))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_2 (+ 2 i_9)) (select o_0 (+ 2 i_9))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (+ (select o_2 (+ 2 i_9)) (select o_0 (+ i_6 4))) (+ (select o_0 (+ 2 i_9)) (select o_2 (+ i_6 4))))) (or (< i_6 0) (not (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4)))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (<= (select o_2 (+ 2 i_9)) (select o_0 (+ 2 i_9))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)) (or (<= (+ (select o_0 (+ 2 i_9)) 1) (select o_2 (+ 2 i_9))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6) (<= (select o_2 (+ i_6 4)) (select o_0 (+ i_6 4)))) (or (<= (select o_0 (+ 2 i_9)) (select o_2 (+ 2 i_9))) (< i_6 0) (not (= (select o_0 (+ i_6 4)) (select o_2 (+ i_6 4)))) (not (= (select o_0 (+ 3 i_6)) (select o_2 (+ 3 i_6)))) (not (= (select o_0 (+ 2 i_6)) (select o_2 (+ 2 i_6)))) break_4 (not (= (select o_2 i_6) (select o_0 i_6))) (not (= (select o_2 (+ i_6 1)) (select o_0 (+ i_6 1)))) (<= 1 i_6)))] [2022-03-15 21:08:55,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-03-15 21:08:55,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:08:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-03-15 21:08:55,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=7093, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 21:08:55,651 INFO L87 Difference]: Start difference. First operand 184 states and 409 transitions. Second operand has 65 states, 64 states have (on average 2.046875) internal successors, (131), 65 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:12:23,102 WARN L228 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 439 DAG size of output: 409 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 21:13:16,089 WARN L228 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 404 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 21:13:34,373 WARN L228 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 488 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 21:14:17,824 WARN L228 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 397 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 21:14:31,321 WARN L228 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 406 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 21:14:37,485 WARN L228 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 463 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 21:14:43,930 WARN L228 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 443 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 21:14:51,292 WARN L228 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 500 DAG size of output: 451 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-03-15 21:15:35,905 WARN L244 SmtUtils]: Removed 79 from assertion stack [2022-03-15 21:15:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 319 states. [2022-03-15 21:15:35,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 28 SyntacticMatches, 9 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 53431 ImplicationChecksByTransitivity, 390.0s TimeCoverageRelationStatistics Valid=13005, Invalid=141837, Unknown=0, NotChecked=0, Total=154842 [2022-03-15 21:15:35,915 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 935 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 13947 mSolverCounterSat, 2455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2455 IncrementalHoareTripleChecker+Valid, 13947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-03-15 21:15:35,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 0 Invalid, 16402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2455 Valid, 13947 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-03-15 21:15:35,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-15 21:15:35,936 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 21:15:35,936 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 21:15:35,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 21:15:36,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:15:36,124 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (184states) and FLOYD_HOARE automaton (currently 319 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 406 for 4024ms.. [2022-03-15 21:15:36,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 21:15:36,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 21:15:36,127 INFO L732 BasicCegarLoop]: Path program histogram: [18, 1, 1] [2022-03-15 21:15:36,129 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 21:15:36,129 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 21:15:36,131 INFO L202 PluginConnector]: Adding new model chromosome-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 09:15:36 BasicIcfg [2022-03-15 21:15:36,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 21:15:36,131 INFO L158 Benchmark]: Toolchain (without parser) took 861437.44ms. Allocated memory was 196.1MB in the beginning and 626.0MB in the end (delta: 429.9MB). Free memory was 154.5MB in the beginning and 356.1MB in the end (delta: -201.6MB). Peak memory consumption was 441.8MB. Max. memory is 8.0GB. [2022-03-15 21:15:36,131 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 196.1MB. Free memory is still 155.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 21:15:36,132 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.94ms. Allocated memory is still 196.1MB. Free memory was 154.5MB in the beginning and 152.9MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-15 21:15:36,132 INFO L158 Benchmark]: Boogie Preprocessor took 15.47ms. Allocated memory is still 196.1MB. Free memory was 152.9MB in the beginning and 152.0MB in the end (delta: 952.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 21:15:36,132 INFO L158 Benchmark]: RCFGBuilder took 323.41ms. Allocated memory is still 196.1MB. Free memory was 151.9MB in the beginning and 141.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-15 21:15:36,132 INFO L158 Benchmark]: TraceAbstraction took 861064.47ms. Allocated memory was 196.1MB in the beginning and 626.0MB in the end (delta: 429.9MB). Free memory was 140.8MB in the beginning and 356.1MB in the end (delta: -215.3MB). Peak memory consumption was 426.0MB. Max. memory is 8.0GB. [2022-03-15 21:15:36,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10ms. Allocated memory is still 196.1MB. Free memory is still 155.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.94ms. Allocated memory is still 196.1MB. Free memory was 154.5MB in the beginning and 152.9MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.47ms. Allocated memory is still 196.1MB. Free memory was 152.9MB in the beginning and 152.0MB in the end (delta: 952.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 323.41ms. Allocated memory is still 196.1MB. Free memory was 151.9MB in the beginning and 141.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 861064.47ms. Allocated memory was 196.1MB in the beginning and 626.0MB in the end (delta: 429.9MB). Free memory was 140.8MB in the beginning and 356.1MB in the end (delta: -215.3MB). Peak memory consumption was 426.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 23 PlacesBefore, 19 PlacesAfterwards, 18 TransitionsBefore, 14 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 31 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 31, positive conditional: 0, positive unconditional: 31, 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: 17, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 17, unknown conditional: 0, unknown unconditional: 17] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, 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: 76]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (184states) and FLOYD_HOARE automaton (currently 319 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 406 for 4024ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (184states) and FLOYD_HOARE automaton (currently 319 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 406 for 4024ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (184states) and FLOYD_HOARE automaton (currently 319 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 406 for 4024ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 27 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 861.0s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 777.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7375 SdHoareTripleChecker+Valid, 37.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7375 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 32.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10316 mSDsCounter, 7997 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 66289 IncrementalHoareTripleChecker+Invalid, 74286 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7997 mSolverCounterUnsat, 0 mSDtfsCounter, 66289 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3459 GetRequests, 595 SyntacticMatches, 98 SemanticMatches, 2765 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 228952 ImplicationChecksByTransitivity, 755.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=16, InterpolantAutomatonStates: 1896, 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, 19 MinimizatonAttempts, 2554 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 559 NumberOfCodeBlocks, 559 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 773 ConstructedInterpolants, 58 QuantifiedInterpolants, 10844 SizeOfPredicates, 130 NumberOfNonLiveVariables, 1350 ConjunctsInSsa, 363 ConjunctsInUnsatCore, 56 InterpolantComputations, 2 PerfectInterpolantSequences, 134/745 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