/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/min-max-dec.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 21:30:11,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 21:30:11,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 21:30:11,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 21:30:11,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 21:30:11,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 21:30:11,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 21:30:11,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 21:30:11,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 21:30:11,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 21:30:11,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 21:30:11,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-15 21:30:11,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 21:30:11,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 21:30:11,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 21:30:11,285 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 21:30:11,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 21:30:11,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 21:30:11,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 21:30:11,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 21:30:11,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 21:30:11,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 21:30:11,311 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 21:30:11,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 21:30:11,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 21:30:11,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 21:30:11,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 21:30:11,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 21:30:11,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 21:30:11,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 21:30:11,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 21:30:11,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 21:30:11,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 21:30:11,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 21:30:11,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 21:30:11,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 21:30:11,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 21:30:11,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 21:30:11,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 21:30:11,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:30:11,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 21:30:11,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 21:30:11,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 21:30:11,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 21:30:11,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 21:30:11,314 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 21:30:11,314 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 21:30:11,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 21:30:11,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 21:30:11,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 21:30:11,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 21:30:11,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 21:30:11,507 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 21:30:11,508 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 21:30:11,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/min-max-dec.wvr.bpl [2022-03-15 21:30:11,509 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/min-max-dec.wvr.bpl' [2022-03-15 21:30:11,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 21:30:11,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 21:30:11,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 21:30:11,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 21:30:11,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 21:30:11,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/1) ... [2022-03-15 21:30:11,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/1) ... [2022-03-15 21:30:11,545 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 21:30:11,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 21:30:11,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 21:30:11,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 21:30:11,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 21:30:11,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/1) ... [2022-03-15 21:30:11,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/1) ... [2022-03-15 21:30:11,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/1) ... [2022-03-15 21:30:11,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/1) ... [2022-03-15 21:30:11,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/1) ... [2022-03-15 21:30:11,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/1) ... [2022-03-15 21:30:11,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/1) ... [2022-03-15 21:30:11,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 21:30:11,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 21:30:11,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 21:30:11,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 21:30:11,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/1) ... [2022-03-15 21:30:11,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:30:11,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:11,595 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 21:30:11,617 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 21:30:11,625 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 21:30:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 21:30:11,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 21:30:11,626 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 21:30:11,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 21:30:11,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 21:30:11,627 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 21:30:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 21:30:11,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 21:30:11,627 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-15 21:30:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 21:30:11,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 21:30:11,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-03-15 21:30:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 21:30:11,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 21:30:11,629 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 21:30:11,668 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 21:30:11,669 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 21:30:11,749 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 21:30:11,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 21:30:11,759 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 21:30:11,760 INFO L202 PluginConnector]: Adding new model min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:30:11 BoogieIcfgContainer [2022-03-15 21:30:11,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 21:30:11,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 21:30:11,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 21:30:11,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 21:30:11,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:30:11" (1/2) ... [2022-03-15 21:30:11,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea816ec and model type min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 09:30:11, skipping insertion in model container [2022-03-15 21:30:11,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:30:11" (2/2) ... [2022-03-15 21:30:11,765 INFO L111 eAbstractionObserver]: Analyzing ICFG min-max-dec.wvr.bpl [2022-03-15 21:30:11,768 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 21:30:11,768 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 21:30:11,768 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 21:30:11,768 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 21:30:11,802 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-15 21:30:11,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 21:30:11,837 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 21:30:11,837 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-15 21:30:11,844 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 21:30:11,850 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 35 transitions, 102 flow [2022-03-15 21:30:11,851 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 35 transitions, 102 flow [2022-03-15 21:30:11,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 35 transitions, 102 flow [2022-03-15 21:30:11,869 INFO L129 PetriNetUnfolder]: 3/31 cut-off events. [2022-03-15 21:30:11,869 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-03-15 21:30:11,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 31 events. 3/31 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2022-03-15 21:30:11,872 INFO L116 LiptonReduction]: Number of co-enabled transitions 340 [2022-03-15 21:30:12,102 INFO L131 LiptonReduction]: Checked pairs total: 413 [2022-03-15 21:30:12,102 INFO L133 LiptonReduction]: Total number of compositions: 10 [2022-03-15 21:30:12,119 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 26 transitions, 84 flow [2022-03-15 21:30:12,149 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 142 states, 141 states have (on average 3.4113475177304964) internal successors, (481), 141 states have internal predecessors, (481), 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 21:30:12,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 141 states have (on average 3.4113475177304964) internal successors, (481), 141 states have internal predecessors, (481), 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 21:30:12,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:30:12,159 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:12,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:12,159 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:12,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:12,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1224725199, now seen corresponding path program 1 times [2022-03-15 21:30:12,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:12,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036754851] [2022-03-15 21:30:12,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:12,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:12,290 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 21:30:12,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:12,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036754851] [2022-03-15 21:30:12,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036754851] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:30:12,291 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:30:12,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 21:30:12,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2079123177] [2022-03-15 21:30:12,292 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:12,296 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:12,309 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 84 transitions. [2022-03-15 21:30:12,310 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:12,636 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:30:12,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 21:30:12,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:12,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 21:30:12,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 21:30:12,658 INFO L87 Difference]: Start difference. First operand has 142 states, 141 states have (on average 3.4113475177304964) internal successors, (481), 141 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:30:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:12,725 INFO L93 Difference]: Finished difference Result 170 states and 559 transitions. [2022-03-15 21:30:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 21:30:12,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:30:12,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:12,740 INFO L225 Difference]: With dead ends: 170 [2022-03-15 21:30:12,740 INFO L226 Difference]: Without dead ends: 126 [2022-03-15 21:30:12,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 21:30:12,745 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:12,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 17 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:30:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-03-15 21:30:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-03-15 21:30:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 3.336) internal successors, (417), 125 states have internal predecessors, (417), 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 21:30:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 417 transitions. [2022-03-15 21:30:12,793 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 417 transitions. Word has length 18 [2022-03-15 21:30:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:12,793 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 417 transitions. [2022-03-15 21:30:12,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:30:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 417 transitions. [2022-03-15 21:30:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:30:12,795 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:12,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:12,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 21:30:12,795 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2079428537, now seen corresponding path program 2 times [2022-03-15 21:30:12,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:12,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764839104] [2022-03-15 21:30:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:12,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:12,847 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 21:30:12,847 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:12,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764839104] [2022-03-15 21:30:12,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764839104] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:30:12,848 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:30:12,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 21:30:12,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [436470213] [2022-03-15 21:30:12,848 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:12,850 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:12,859 INFO L252 McrAutomatonBuilder]: Finished intersection with 114 states and 272 transitions. [2022-03-15 21:30:12,859 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:13,635 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [766#(<= min (+ (select A 0) 1)), 765#(<= min (+ max 1)), 767#(= (select A 0) min)] [2022-03-15 21:30:13,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 21:30:13,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:13,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 21:30:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 21:30:13,639 INFO L87 Difference]: Start difference. First operand 126 states and 417 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 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 21:30:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:13,969 INFO L93 Difference]: Finished difference Result 1014 states and 3323 transitions. [2022-03-15 21:30:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 21:30:13,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 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 18 [2022-03-15 21:30:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:13,976 INFO L225 Difference]: With dead ends: 1014 [2022-03-15 21:30:13,976 INFO L226 Difference]: Without dead ends: 542 [2022-03-15 21:30:13,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 63 SyntacticMatches, 42 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-03-15 21:30:13,978 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 180 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:13,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 45 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 21:30:13,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-03-15 21:30:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 160. [2022-03-15 21:30:14,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.1949685534591197) internal successors, (508), 159 states have internal predecessors, (508), 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 21:30:14,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 508 transitions. [2022-03-15 21:30:14,008 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 508 transitions. Word has length 18 [2022-03-15 21:30:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:14,008 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 508 transitions. [2022-03-15 21:30:14,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 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 21:30:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 508 transitions. [2022-03-15 21:30:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:30:14,014 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:14,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:14,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 21:30:14,014 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:14,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1783214531, now seen corresponding path program 3 times [2022-03-15 21:30:14,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:14,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765738701] [2022-03-15 21:30:14,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:14,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:14,054 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 21:30:14,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:14,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765738701] [2022-03-15 21:30:14,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765738701] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:30:14,061 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:30:14,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 21:30:14,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1181176399] [2022-03-15 21:30:14,061 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:14,062 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:14,067 INFO L252 McrAutomatonBuilder]: Finished intersection with 57 states and 105 transitions. [2022-03-15 21:30:14,067 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:14,276 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:30:14,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 21:30:14,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 21:30:14,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 21:30:14,277 INFO L87 Difference]: Start difference. First operand 160 states and 508 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 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 21:30:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:14,318 INFO L93 Difference]: Finished difference Result 176 states and 550 transitions. [2022-03-15 21:30:14,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 21:30:14,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 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 18 [2022-03-15 21:30:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:14,319 INFO L225 Difference]: With dead ends: 176 [2022-03-15 21:30:14,320 INFO L226 Difference]: Without dead ends: 141 [2022-03-15 21:30:14,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 21:30:14,320 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:14,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 13 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:30:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-03-15 21:30:14,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-03-15 21:30:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 3.0357142857142856) internal successors, (425), 140 states have internal predecessors, (425), 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 21:30:14,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 425 transitions. [2022-03-15 21:30:14,332 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 425 transitions. Word has length 18 [2022-03-15 21:30:14,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:14,333 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 425 transitions. [2022-03-15 21:30:14,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 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 21:30:14,333 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 425 transitions. [2022-03-15 21:30:14,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 21:30:14,335 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:14,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:14,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 21:30:14,335 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:14,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:14,336 INFO L85 PathProgramCache]: Analyzing trace with hash 420278864, now seen corresponding path program 1 times [2022-03-15 21:30:14,337 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:14,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569563376] [2022-03-15 21:30:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:14,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:30:14,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:14,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569563376] [2022-03-15 21:30:14,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569563376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:30:14,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:30:14,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:30:14,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [219990483] [2022-03-15 21:30:14,394 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:14,395 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:14,401 INFO L252 McrAutomatonBuilder]: Finished intersection with 89 states and 200 transitions. [2022-03-15 21:30:14,401 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:14,802 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2606#(< l N), 2609#(or (<= (+ j 1) N) (<= N l)), 2607#(or (< j N) (< l N)), 2608#(<= N l)] [2022-03-15 21:30:14,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 21:30:14,802 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 21:30:14,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-15 21:30:14,803 INFO L87 Difference]: Start difference. First operand 141 states and 425 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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 21:30:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:14,879 INFO L93 Difference]: Finished difference Result 215 states and 659 transitions. [2022-03-15 21:30:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 21:30:14,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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 19 [2022-03-15 21:30:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:14,881 INFO L225 Difference]: With dead ends: 215 [2022-03-15 21:30:14,881 INFO L226 Difference]: Without dead ends: 206 [2022-03-15 21:30:14,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-03-15 21:30:14,881 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:14,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 57 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-03-15 21:30:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 194. [2022-03-15 21:30:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 3.1709844559585494) internal successors, (612), 193 states have internal predecessors, (612), 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 21:30:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 612 transitions. [2022-03-15 21:30:14,887 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 612 transitions. Word has length 19 [2022-03-15 21:30:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:14,887 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 612 transitions. [2022-03-15 21:30:14,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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 21:30:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 612 transitions. [2022-03-15 21:30:14,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:30:14,888 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:14,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:14,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 21:30:14,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:14,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:14,889 INFO L85 PathProgramCache]: Analyzing trace with hash 179676343, now seen corresponding path program 1 times [2022-03-15 21:30:14,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:14,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774579463] [2022-03-15 21:30:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:14,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:14,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:14,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774579463] [2022-03-15 21:30:14,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774579463] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:14,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345713993] [2022-03-15 21:30:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:14,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:14,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:14,931 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 21:30:14,934 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 21:30:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:14,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 21:30:14,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:15,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:15,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345713993] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:15,071 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:15,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-03-15 21:30:15,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1516564405] [2022-03-15 21:30:15,072 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:15,073 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:15,080 INFO L252 McrAutomatonBuilder]: Finished intersection with 104 states and 242 transitions. [2022-03-15 21:30:15,081 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:15,558 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [3336#(< l N), 3338#(or (<= (+ i 1) N) (<= N l)), 3337#(or (<= (+ i 1) N) (< l N))] [2022-03-15 21:30:15,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 21:30:15,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:15,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 21:30:15,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-15 21:30:15,560 INFO L87 Difference]: Start difference. First operand 194 states and 612 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 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 21:30:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:15,619 INFO L93 Difference]: Finished difference Result 346 states and 1045 transitions. [2022-03-15 21:30:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 21:30:15,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 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 20 [2022-03-15 21:30:15,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:15,621 INFO L225 Difference]: With dead ends: 346 [2022-03-15 21:30:15,621 INFO L226 Difference]: Without dead ends: 346 [2022-03-15 21:30:15,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 7 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-15 21:30:15,622 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 52 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:15,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 31 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-03-15 21:30:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 234. [2022-03-15 21:30:15,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.2489270386266096) internal successors, (757), 233 states have internal predecessors, (757), 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 21:30:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 757 transitions. [2022-03-15 21:30:15,631 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 757 transitions. Word has length 20 [2022-03-15 21:30:15,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:15,632 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 757 transitions. [2022-03-15 21:30:15,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 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 21:30:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 757 transitions. [2022-03-15 21:30:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:30:15,652 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:15,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:15,677 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 21:30:15,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:15,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1833279473, now seen corresponding path program 2 times [2022-03-15 21:30:15,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:15,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631024931] [2022-03-15 21:30:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:15,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:15,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631024931] [2022-03-15 21:30:15,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631024931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:30:15,910 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:30:15,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:30:15,910 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1754299848] [2022-03-15 21:30:15,911 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:15,912 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:15,920 INFO L252 McrAutomatonBuilder]: Finished intersection with 127 states and 294 transitions. [2022-03-15 21:30:15,920 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:16,399 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4158#(or (<= N l) (< i N)), 4157#(< i N)] [2022-03-15 21:30:16,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 21:30:16,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:16,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 21:30:16,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-15 21:30:16,401 INFO L87 Difference]: Start difference. First operand 234 states and 757 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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 21:30:16,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:16,462 INFO L93 Difference]: Finished difference Result 248 states and 781 transitions. [2022-03-15 21:30:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 21:30:16,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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 20 [2022-03-15 21:30:16,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:16,464 INFO L225 Difference]: With dead ends: 248 [2022-03-15 21:30:16,464 INFO L226 Difference]: Without dead ends: 229 [2022-03-15 21:30:16,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 67 SyntacticMatches, 38 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-15 21:30:16,466 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:16,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 37 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:30:16,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-03-15 21:30:16,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2022-03-15 21:30:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 3.25) internal successors, (728), 224 states have internal predecessors, (728), 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 21:30:16,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 728 transitions. [2022-03-15 21:30:16,471 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 728 transitions. Word has length 20 [2022-03-15 21:30:16,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:16,472 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 728 transitions. [2022-03-15 21:30:16,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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 21:30:16,472 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 728 transitions. [2022-03-15 21:30:16,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 21:30:16,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:16,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:16,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 21:30:16,473 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:16,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:16,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1854262835, now seen corresponding path program 1 times [2022-03-15 21:30:16,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:16,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208231090] [2022-03-15 21:30:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:16,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:30:16,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:16,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208231090] [2022-03-15 21:30:16,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208231090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:16,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216496555] [2022-03-15 21:30:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:16,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:16,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:16,579 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 21:30:16,598 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 21:30:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:16,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 21:30:16,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:16,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 19 treesize of output 14 [2022-03-15 21:30:16,766 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 13 treesize of output 9 [2022-03-15 21:30:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:30:16,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:17,281 INFO L353 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-03-15 21:30:17,281 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 371 treesize of output 1 [2022-03-15 21:30:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:30:17,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216496555] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:17,284 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 21:30:17,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 17 [2022-03-15 21:30:17,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [137771526] [2022-03-15 21:30:17,285 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:17,286 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:17,295 INFO L252 McrAutomatonBuilder]: Finished intersection with 120 states and 286 transitions. [2022-03-15 21:30:17,295 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:20,152 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-03-15 21:30:21,113 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-03-15 21:30:21,671 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [5000#(and (or (<= min (+ (select A j) 1)) (not (< min (select A i))) (< (select A j) max)) (or (not (< (select A j) max)) (<= (select A i) (+ max 1)) (< min (select A i))) (or (< (select A j) max) (<= (select A i) (+ (select A j) 1)) (< min (select A i))) (or (<= max (select A j)) (not (< min (select A i))) (<= min (+ max 1)))), 4999#(and (or (<= min (+ (select A j) 1)) (< (select A j) max)) (or (<= max (select A j)) (<= min (+ max 1)))), 5001#(and (or (and (= l 0) (<= (select A l) (+ 2 max))) (and (not (= l j)) (<= max (select A j))) (and (<= (+ max 1) (select A l)) (= l j)) (and (<= (+ (select A i) 1) (select A l)) (= l 0)) (<= (select A 0) (+ max 1)) (and (not (= l 0)) (<= (select A i) (select A 0)))) (or (and (< (select A l) (+ max 1)) (= l j)) (and (not (= l j)) (or (and (<= (select A l) (+ (select A j) 2)) (= l i)) (<= (select A i) (+ (select A j) 1)))) (and (<= (select A i) (select A l)) (= l j)) (and (not (= l i)) (< (select A 0) (select A i))) (and (= l 0) (not (= l i)) (< (select A l) (+ (select A i) 1))) (< (select A j) max) (and (< (+ (select A 0) 1) (select A l)) (= l i))) (or (and (not (= l i)) (< (select A 0) (select A i))) (and (= l 0) (not (= l i)) (< (select A l) (+ (select A i) 1))) (not (or (and (< (select A l) (+ max 1)) (= l j)) (< (select A j) max))) (<= (select A i) (+ max 1)) (and (<= (select A l) (+ 2 max)) (= l i)) (and (< (+ (select A 0) 1) (select A l)) (= l i))) (or (and (<= (select A l) (+ (select A j) 2)) (= l 0)) (and (= l j) (<= (select A 0) (select A l))) (and (< (select A l) (+ max 1)) (= l j)) (and (not (= l j)) (<= (select A 0) (+ (select A j) 1))) (not (or (and (not (= l i)) (< (select A 0) (select A i))) (and (= l 0) (not (= l i)) (< (select A l) (+ (select A i) 1))) (and (< (+ (select A 0) 1) (select A l)) (= l i)))) (< (select A j) max)))] [2022-03-15 21:30:21,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 21:30:21,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 21:30:21,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2022-03-15 21:30:21,673 INFO L87 Difference]: Start difference. First operand 225 states and 728 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 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 21:30:22,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:22,117 INFO L93 Difference]: Finished difference Result 445 states and 1444 transitions. [2022-03-15 21:30:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 21:30:22,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 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 21 [2022-03-15 21:30:22,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:22,122 INFO L225 Difference]: With dead ends: 445 [2022-03-15 21:30:22,122 INFO L226 Difference]: Without dead ends: 358 [2022-03-15 21:30:22,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 121 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2022-03-15 21:30:22,123 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 92 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:22,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 24 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 247 Invalid, 0 Unknown, 46 Unchecked, 0.2s Time] [2022-03-15 21:30:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-03-15 21:30:22,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 242. [2022-03-15 21:30:22,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 3.190871369294606) internal successors, (769), 241 states have internal predecessors, (769), 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 21:30:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 769 transitions. [2022-03-15 21:30:22,129 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 769 transitions. Word has length 21 [2022-03-15 21:30:22,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:22,129 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 769 transitions. [2022-03-15 21:30:22,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 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 21:30:22,129 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 769 transitions. [2022-03-15 21:30:22,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 21:30:22,130 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:22,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:22,155 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 21:30:22,347 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,SelfDestructingSolverStorable6 [2022-03-15 21:30:22,348 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:22,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1577667409, now seen corresponding path program 2 times [2022-03-15 21:30:22,349 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:22,349 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335286357] [2022-03-15 21:30:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:22,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:22,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:22,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335286357] [2022-03-15 21:30:22,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335286357] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:22,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848608206] [2022-03-15 21:30:22,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:30:22,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:22,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:22,425 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 21:30:22,425 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 21:30:22,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:30:22,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:22,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 21:30:22,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:22,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 19 treesize of output 14 [2022-03-15 21:30:22,499 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 13 treesize of output 9 [2022-03-15 21:30:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:22,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:22,687 INFO L353 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-03-15 21:30:22,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 1 [2022-03-15 21:30:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:22,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848608206] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:22,690 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 21:30:22,690 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2022-03-15 21:30:22,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [259534879] [2022-03-15 21:30:22,691 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:22,692 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:22,698 INFO L252 McrAutomatonBuilder]: Finished intersection with 81 states and 173 transitions. [2022-03-15 21:30:22,698 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:23,760 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [6079#(and (or (and (= l 0) (<= (select A l) (+ 2 max))) (and (not (= l j)) (<= max (select A j))) (and (<= (+ max 1) (select A l)) (= l j)) (<= (select A 0) (+ max 1))) (or (and (<= (select A l) (+ (select A j) 2)) (= l 0)) (and (= l j) (<= (select A 0) (select A l))) (and (< (select A l) (+ max 1)) (= l j)) (and (not (= l j)) (<= (select A 0) (+ (select A j) 1))) (< (select A j) max))), 6078#(and (or (<= min (+ (select A j) 1)) (< (select A j) max)) (or (<= max (select A j)) (<= min (+ max 1))))] [2022-03-15 21:30:23,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 21:30:23,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:23,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 21:30:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-03-15 21:30:23,762 INFO L87 Difference]: Start difference. First operand 242 states and 769 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 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 21:30:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:24,184 INFO L93 Difference]: Finished difference Result 1049 states and 3310 transitions. [2022-03-15 21:30:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 21:30:24,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 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) Word has length 21 [2022-03-15 21:30:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:24,189 INFO L225 Difference]: With dead ends: 1049 [2022-03-15 21:30:24,189 INFO L226 Difference]: Without dead ends: 872 [2022-03-15 21:30:24,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 89 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2022-03-15 21:30:24,190 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 189 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:24,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 29 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 253 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-03-15 21:30:24,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-03-15 21:30:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 251. [2022-03-15 21:30:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 3.232) internal successors, (808), 250 states have internal predecessors, (808), 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 21:30:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 808 transitions. [2022-03-15 21:30:24,199 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 808 transitions. Word has length 21 [2022-03-15 21:30:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:24,200 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 808 transitions. [2022-03-15 21:30:24,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 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 21:30:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 808 transitions. [2022-03-15 21:30:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 21:30:24,200 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:24,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:24,219 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 21:30:24,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:24,416 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:24,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash -610845901, now seen corresponding path program 3 times [2022-03-15 21:30:24,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:24,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145504732] [2022-03-15 21:30:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:24,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 21:30:24,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:24,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145504732] [2022-03-15 21:30:24,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145504732] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:24,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034990895] [2022-03-15 21:30:24,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:30:24,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:24,463 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 21:30:24,476 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 21:30:24,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 21:30:24,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:24,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 21:30:24,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:24,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 19 treesize of output 14 [2022-03-15 21:30:24,535 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 13 treesize of output 9 [2022-03-15 21:30:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 21:30:24,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:24,606 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 21:30:24,607 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 1 [2022-03-15 21:30:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 21:30:24,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034990895] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:24,609 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 21:30:24,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2022-03-15 21:30:24,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2024157658] [2022-03-15 21:30:24,610 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:24,611 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:24,616 INFO L252 McrAutomatonBuilder]: Finished intersection with 65 states and 125 transitions. [2022-03-15 21:30:24,616 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:24,914 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7790#(or (and (= l 0) (<= (select A l) (+ 2 max))) (<= (select A 0) (+ max 1)))] [2022-03-15 21:30:24,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 21:30:24,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:24,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 21:30:24,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-15 21:30:24,915 INFO L87 Difference]: Start difference. First operand 251 states and 808 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 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 21:30:24,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:24,984 INFO L93 Difference]: Finished difference Result 295 states and 938 transitions. [2022-03-15 21:30:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 21:30:24,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 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 21 [2022-03-15 21:30:24,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:24,986 INFO L225 Difference]: With dead ends: 295 [2022-03-15 21:30:24,986 INFO L226 Difference]: Without dead ends: 215 [2022-03-15 21:30:24,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-15 21:30:24,987 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:24,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 19 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 97 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2022-03-15 21:30:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-03-15 21:30:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-03-15 21:30:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.196261682242991) internal successors, (684), 214 states have internal predecessors, (684), 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 21:30:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 684 transitions. [2022-03-15 21:30:24,992 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 684 transitions. Word has length 21 [2022-03-15 21:30:24,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:24,992 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 684 transitions. [2022-03-15 21:30:24,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 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 21:30:24,993 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 684 transitions. [2022-03-15 21:30:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 21:30:24,993 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:24,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:25,012 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 21:30:25,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:25,210 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:25,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:25,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2113744473, now seen corresponding path program 4 times [2022-03-15 21:30:25,211 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:25,211 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39167178] [2022-03-15 21:30:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:25,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:25,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:25,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39167178] [2022-03-15 21:30:25,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39167178] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:25,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063065229] [2022-03-15 21:30:25,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:30:25,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:25,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:25,282 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 21:30:25,282 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 21:30:25,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:30:25,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:25,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 21:30:25,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:25,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 19 treesize of output 14 [2022-03-15 21:30:25,358 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 13 treesize of output 9 [2022-03-15 21:30:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:25,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:25,538 INFO L353 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-03-15 21:30:25,538 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 1 [2022-03-15 21:30:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:25,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063065229] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:25,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 21:30:25,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 11 [2022-03-15 21:30:25,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1058417427] [2022-03-15 21:30:25,541 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:25,542 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:25,547 INFO L252 McrAutomatonBuilder]: Finished intersection with 63 states and 119 transitions. [2022-03-15 21:30:25,547 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:25,923 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8657#(or (and (= l 0) (<= (select A l) (+ 2 max))) (<= (select A 0) (+ max 1)))] [2022-03-15 21:30:25,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 21:30:25,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 21:30:25,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-03-15 21:30:25,924 INFO L87 Difference]: Start difference. First operand 215 states and 684 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:30:25,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:25,989 INFO L93 Difference]: Finished difference Result 235 states and 738 transitions. [2022-03-15 21:30:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 21:30:25,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 21:30:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:25,990 INFO L225 Difference]: With dead ends: 235 [2022-03-15 21:30:25,990 INFO L226 Difference]: Without dead ends: 149 [2022-03-15 21:30:25,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-03-15 21:30:25,991 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:25,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-03-15 21:30:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-03-15 21:30:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-03-15 21:30:25,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 3.2432432432432434) internal successors, (480), 148 states have internal predecessors, (480), 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 21:30:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 480 transitions. [2022-03-15 21:30:25,994 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 480 transitions. Word has length 21 [2022-03-15 21:30:25,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:25,994 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 480 transitions. [2022-03-15 21:30:25,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:30:25,994 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 480 transitions. [2022-03-15 21:30:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 21:30:25,995 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:25,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:26,011 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 21:30:26,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-15 21:30:26,211 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:26,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:26,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1794342557, now seen corresponding path program 5 times [2022-03-15 21:30:26,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:26,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000789364] [2022-03-15 21:30:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:26,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:26,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:26,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000789364] [2022-03-15 21:30:26,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000789364] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:26,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466507026] [2022-03-15 21:30:26,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:30:26,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:26,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:26,273 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 21:30:26,282 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 21:30:26,305 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 21:30:26,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:26,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 21:30:26,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:26,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 19 treesize of output 14 [2022-03-15 21:30:26,352 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 13 treesize of output 9 [2022-03-15 21:30:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:26,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:26,478 INFO L353 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-03-15 21:30:26,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 1 [2022-03-15 21:30:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:26,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466507026] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:26,483 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:26,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-03-15 21:30:26,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [971324788] [2022-03-15 21:30:26,483 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:26,484 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:26,490 INFO L252 McrAutomatonBuilder]: Finished intersection with 76 states and 149 transitions. [2022-03-15 21:30:26,490 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:26,855 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9328#(or (and (not (= l 0)) (<= min (+ (select A 0) 1))) (and (= l 0) (<= min (select A l))))] [2022-03-15 21:30:26,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 21:30:26,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:26,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 21:30:26,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-03-15 21:30:26,856 INFO L87 Difference]: Start difference. First operand 149 states and 480 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 21:30:27,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:27,037 INFO L93 Difference]: Finished difference Result 468 states and 1563 transitions. [2022-03-15 21:30:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 21:30:27,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 21 [2022-03-15 21:30:27,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:27,039 INFO L225 Difference]: With dead ends: 468 [2022-03-15 21:30:27,039 INFO L226 Difference]: Without dead ends: 183 [2022-03-15 21:30:27,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-03-15 21:30:27,039 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 48 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:27,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 29 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-03-15 21:30:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 165. [2022-03-15 21:30:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 3.1646341463414633) internal successors, (519), 164 states have internal predecessors, (519), 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 21:30:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 519 transitions. [2022-03-15 21:30:27,043 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 519 transitions. Word has length 21 [2022-03-15 21:30:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:27,043 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 519 transitions. [2022-03-15 21:30:27,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 21:30:27,043 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 519 transitions. [2022-03-15 21:30:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 21:30:27,044 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:27,044 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:27,061 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 21:30:27,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:27,259 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:27,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:27,260 INFO L85 PathProgramCache]: Analyzing trace with hash 270673371, now seen corresponding path program 6 times [2022-03-15 21:30:27,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:27,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366513771] [2022-03-15 21:30:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:27,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:27,288 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:27,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366513771] [2022-03-15 21:30:27,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366513771] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:27,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628859690] [2022-03-15 21:30:27,288 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:30:27,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:27,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:27,289 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 21:30:27,290 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 21:30:27,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 21:30:27,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:27,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 21:30:27,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:27,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:27,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628859690] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:27,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:27,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-03-15 21:30:27,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [181324944] [2022-03-15 21:30:27,397 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:27,399 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:27,407 INFO L252 McrAutomatonBuilder]: Finished intersection with 93 states and 200 transitions. [2022-03-15 21:30:27,407 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:27,784 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [10282#(or (<= N i) (< (+ i 1) N)), 10281#(< i N), 10283#(or (<= i l) (<= N l))] [2022-03-15 21:30:27,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 21:30:27,785 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:27,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 21:30:27,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-15 21:30:27,785 INFO L87 Difference]: Start difference. First operand 165 states and 519 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 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 21:30:27,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:27,959 INFO L93 Difference]: Finished difference Result 537 states and 1713 transitions. [2022-03-15 21:30:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 21:30:27,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 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 23 [2022-03-15 21:30:27,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:27,969 INFO L225 Difference]: With dead ends: 537 [2022-03-15 21:30:27,969 INFO L226 Difference]: Without dead ends: 537 [2022-03-15 21:30:27,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-03-15 21:30:27,970 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 109 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:27,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 75 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-03-15 21:30:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 286. [2022-03-15 21:30:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 3.4350877192982456) internal successors, (979), 285 states have internal predecessors, (979), 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 21:30:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 979 transitions. [2022-03-15 21:30:27,977 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 979 transitions. Word has length 23 [2022-03-15 21:30:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:27,977 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 979 transitions. [2022-03-15 21:30:27,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 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 21:30:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 979 transitions. [2022-03-15 21:30:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 21:30:27,978 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:27,978 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:27,996 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 21:30:28,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:28,191 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:28,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1588697765, now seen corresponding path program 7 times [2022-03-15 21:30:28,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:28,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333143229] [2022-03-15 21:30:28,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:28,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:28,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:28,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333143229] [2022-03-15 21:30:28,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333143229] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:28,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314842188] [2022-03-15 21:30:28,226 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:30:28,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:28,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:28,228 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 21:30:28,228 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 21:30:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:28,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 21:30:28,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 21:30:28,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 21:30:28,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314842188] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:28,317 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:28,317 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 6 [2022-03-15 21:30:28,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [765994640] [2022-03-15 21:30:28,319 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:28,320 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:28,327 INFO L252 McrAutomatonBuilder]: Finished intersection with 75 states and 146 transitions. [2022-03-15 21:30:28,327 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:28,521 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [11546#(or (<= (+ N 1) l) (< i N)), 11545#(< i N), 11547#(<= N (+ l 1)), 11544#(or (<= i l) (<= N l))] [2022-03-15 21:30:28,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 21:30:28,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 21:30:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-03-15 21:30:28,522 INFO L87 Difference]: Start difference. First operand 286 states and 979 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 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 21:30:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:28,628 INFO L93 Difference]: Finished difference Result 508 states and 1716 transitions. [2022-03-15 21:30:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 21:30:28,629 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 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 23 [2022-03-15 21:30:28,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:28,631 INFO L225 Difference]: With dead ends: 508 [2022-03-15 21:30:28,631 INFO L226 Difference]: Without dead ends: 502 [2022-03-15 21:30:28,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-15 21:30:28,631 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 70 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:28,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 48 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-03-15 21:30:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 343. [2022-03-15 21:30:28,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 3.502923976608187) internal successors, (1198), 342 states have internal predecessors, (1198), 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 21:30:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1198 transitions. [2022-03-15 21:30:28,638 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1198 transitions. Word has length 23 [2022-03-15 21:30:28,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:28,638 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 1198 transitions. [2022-03-15 21:30:28,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 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 21:30:28,638 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1198 transitions. [2022-03-15 21:30:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 21:30:28,639 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:28,639 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:28,657 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 21:30:28,858 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,SelfDestructingSolverStorable12 [2022-03-15 21:30:28,858 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:28,858 INFO L85 PathProgramCache]: Analyzing trace with hash -804183165, now seen corresponding path program 8 times [2022-03-15 21:30:28,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:28,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715863047] [2022-03-15 21:30:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:28,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:28,885 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:28,885 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715863047] [2022-03-15 21:30:28,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715863047] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:28,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604300966] [2022-03-15 21:30:28,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:30:28,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:28,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:28,887 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 21:30:28,913 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 21:30:28,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:30:28,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:28,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 21:30:28,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:28,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:28,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604300966] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:28,998 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:28,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-03-15 21:30:28,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1155873324] [2022-03-15 21:30:28,998 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:29,000 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:29,008 INFO L252 McrAutomatonBuilder]: Finished intersection with 86 states and 169 transitions. [2022-03-15 21:30:29,008 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:29,266 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [12892#(or (<= (+ N 1) l) (< i N)), 12891#(< i N), 12894#(<= N (+ 2 l)), 12893#(or (<= N l) (< i N))] [2022-03-15 21:30:29,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 21:30:29,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:29,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 21:30:29,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-15 21:30:29,267 INFO L87 Difference]: Start difference. First operand 343 states and 1198 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 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 21:30:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:29,395 INFO L93 Difference]: Finished difference Result 479 states and 1588 transitions. [2022-03-15 21:30:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 21:30:29,396 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 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 23 [2022-03-15 21:30:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:29,398 INFO L225 Difference]: With dead ends: 479 [2022-03-15 21:30:29,398 INFO L226 Difference]: Without dead ends: 471 [2022-03-15 21:30:29,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 93 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-03-15 21:30:29,402 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 64 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:29,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 46 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-03-15 21:30:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 364. [2022-03-15 21:30:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 3.517906336088154) internal successors, (1277), 363 states have internal predecessors, (1277), 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 21:30:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1277 transitions. [2022-03-15 21:30:29,413 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1277 transitions. Word has length 23 [2022-03-15 21:30:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:29,413 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 1277 transitions. [2022-03-15 21:30:29,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 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 21:30:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1277 transitions. [2022-03-15 21:30:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 21:30:29,414 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:29,414 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:29,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-15 21:30:29,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 21:30:29,630 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:29,630 INFO L85 PathProgramCache]: Analyzing trace with hash 811531069, now seen corresponding path program 9 times [2022-03-15 21:30:29,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:29,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696704131] [2022-03-15 21:30:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:29,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:29,679 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:29,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696704131] [2022-03-15 21:30:29,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696704131] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:29,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679524451] [2022-03-15 21:30:29,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:30:29,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:29,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:29,680 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 21:30:29,681 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 21:30:29,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 21:30:29,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:29,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 21:30:29,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:29,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:29,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679524451] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:29,793 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:29,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2022-03-15 21:30:29,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1282819159] [2022-03-15 21:30:29,793 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:29,795 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:29,802 INFO L252 McrAutomatonBuilder]: Finished intersection with 76 states and 147 transitions. [2022-03-15 21:30:29,802 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:30,251 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [14268#(or (<= (+ 3 j) N) (<= N l)), 14262#(< i N), 14261#(or (<= N j) (<= (+ 2 j) N)), 14264#(or (<= N j) (<= (+ 2 j) N) (< i N)), 14265#(or (<= (+ 2 j) N) (< i N)), 14263#(or (<= (+ j 1) N) (< i N)), 14267#(and (or (= (+ i (* (- 1) j)) 0) (<= N l)) (or (<= i l) (<= N l))), 14176#(<= (+ j 1) N), 14266#(or (<= (+ 3 j) N) (< i N))] [2022-03-15 21:30:30,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:30:30,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:30,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:30:30,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-15 21:30:30,252 INFO L87 Difference]: Start difference. First operand 364 states and 1277 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 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 21:30:30,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:30,785 INFO L93 Difference]: Finished difference Result 931 states and 3109 transitions. [2022-03-15 21:30:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 21:30:30,785 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 21:30:30,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:30,789 INFO L225 Difference]: With dead ends: 931 [2022-03-15 21:30:30,789 INFO L226 Difference]: Without dead ends: 931 [2022-03-15 21:30:30,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=444, Invalid=1196, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 21:30:30,793 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 225 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:30,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 87 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 21:30:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-03-15 21:30:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 524. [2022-03-15 21:30:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.5889101338432123) internal successors, (1877), 523 states have internal predecessors, (1877), 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 21:30:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1877 transitions. [2022-03-15 21:30:30,805 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1877 transitions. Word has length 24 [2022-03-15 21:30:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:30,805 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1877 transitions. [2022-03-15 21:30:30,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 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 21:30:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1877 transitions. [2022-03-15 21:30:30,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 21:30:30,806 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:30,806 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:30,825 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 21:30:31,015 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,SelfDestructingSolverStorable14 [2022-03-15 21:30:31,015 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:31,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:31,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1018711135, now seen corresponding path program 10 times [2022-03-15 21:30:31,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:31,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131710803] [2022-03-15 21:30:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:31,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:31,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131710803] [2022-03-15 21:30:31,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131710803] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:31,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008403970] [2022-03-15 21:30:31,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:30:31,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:31,053 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 21:30:31,054 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 21:30:31,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:30:31,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:31,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 21:30:31,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:31,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:31,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008403970] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:31,180 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:31,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 10 [2022-03-15 21:30:31,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [882540970] [2022-03-15 21:30:31,181 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:31,182 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:31,190 INFO L252 McrAutomatonBuilder]: Finished intersection with 77 states and 149 transitions. [2022-03-15 21:30:31,190 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:31,604 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [16443#(or (<= N j) (<= (+ 2 j) N)), 16442#(or (<= (+ j 1) N) (< i N)), 16445#(or (<= (+ 2 j) N) (< i N)), 16444#(or (<= N j) (<= (+ 2 j) N) (< i N)), 16441#(< i N)] [2022-03-15 21:30:31,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 21:30:31,605 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 21:30:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-15 21:30:31,605 INFO L87 Difference]: Start difference. First operand 524 states and 1877 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 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 21:30:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:31,765 INFO L93 Difference]: Finished difference Result 801 states and 2903 transitions. [2022-03-15 21:30:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 21:30:31,766 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 21:30:31,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:31,769 INFO L225 Difference]: With dead ends: 801 [2022-03-15 21:30:31,770 INFO L226 Difference]: Without dead ends: 801 [2022-03-15 21:30:31,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-15 21:30:31,770 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 77 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:31,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 50 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:31,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-03-15 21:30:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 570. [2022-03-15 21:30:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 3.586994727592267) internal successors, (2041), 569 states have internal predecessors, (2041), 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 21:30:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 2041 transitions. [2022-03-15 21:30:31,781 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 2041 transitions. Word has length 24 [2022-03-15 21:30:31,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:31,781 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 2041 transitions. [2022-03-15 21:30:31,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 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 21:30:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 2041 transitions. [2022-03-15 21:30:31,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 21:30:31,782 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:31,782 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:31,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 21:30:31,995 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,SelfDestructingSolverStorable15 [2022-03-15 21:30:31,995 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:31,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:31,996 INFO L85 PathProgramCache]: Analyzing trace with hash -238526195, now seen corresponding path program 11 times [2022-03-15 21:30:31,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:31,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751376646] [2022-03-15 21:30:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:31,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:32,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:32,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751376646] [2022-03-15 21:30:32,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751376646] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:32,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897635022] [2022-03-15 21:30:32,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:30:32,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:32,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:32,039 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 21:30:32,039 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 21:30:32,074 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 21:30:32,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:32,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 21:30:32,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:30:32,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:30:32,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897635022] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:32,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:32,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 10 [2022-03-15 21:30:32,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1911805422] [2022-03-15 21:30:32,162 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:32,163 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:32,169 INFO L252 McrAutomatonBuilder]: Finished intersection with 63 states and 108 transitions. [2022-03-15 21:30:32,169 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:32,488 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [18542#(or (<= (+ j 1) N) (< i N)), 18451#(< i N), 18546#(or (<= N j) (<= (+ 2 j) N) (< i N)), 18545#(or (<= N j) (<= (+ 2 j) N)), 18547#(or (<= N j) (<= N i) (< (+ i 1) N) (<= (+ 2 j) N)), 18543#(or (<= N i) (< (+ i 1) N)), 18544#(or (<= (+ j 1) N) (<= N i) (< (+ i 1) N))] [2022-03-15 21:30:32,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 21:30:32,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:32,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 21:30:32,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-03-15 21:30:32,489 INFO L87 Difference]: Start difference. First operand 570 states and 2041 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 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 21:30:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:32,779 INFO L93 Difference]: Finished difference Result 1404 states and 5193 transitions. [2022-03-15 21:30:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 21:30:32,779 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 21:30:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:32,785 INFO L225 Difference]: With dead ends: 1404 [2022-03-15 21:30:32,785 INFO L226 Difference]: Without dead ends: 1404 [2022-03-15 21:30:32,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2022-03-15 21:30:32,786 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 227 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:32,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 60 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 21:30:32,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2022-03-15 21:30:32,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 775. [2022-03-15 21:30:32,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.8126614987080103) internal successors, (2951), 774 states have internal predecessors, (2951), 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 21:30:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2951 transitions. [2022-03-15 21:30:32,803 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2951 transitions. Word has length 24 [2022-03-15 21:30:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:32,803 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2951 transitions. [2022-03-15 21:30:32,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 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 21:30:32,803 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2951 transitions. [2022-03-15 21:30:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-15 21:30:32,805 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:32,805 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:32,822 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 21:30:33,019 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,SelfDestructingSolverStorable16 [2022-03-15 21:30:33,019 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:33,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:33,020 INFO L85 PathProgramCache]: Analyzing trace with hash 104627607, now seen corresponding path program 12 times [2022-03-15 21:30:33,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:33,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970752441] [2022-03-15 21:30:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:33,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:30:33,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:33,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970752441] [2022-03-15 21:30:33,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970752441] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:33,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733548435] [2022-03-15 21:30:33,077 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:30:33,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:33,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:33,080 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 21:30:33,081 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 21:30:33,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 21:30:33,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:33,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 21:30:33,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:33,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:33,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733548435] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:33,238 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:33,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 15 [2022-03-15 21:30:33,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [245527741] [2022-03-15 21:30:33,238 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:33,240 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:33,246 INFO L252 McrAutomatonBuilder]: Finished intersection with 63 states and 109 transitions. [2022-03-15 21:30:33,246 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:33,756 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 14 new interpolants: [21689#(< i N), 21697#(or (<= N (+ i 1)) (< (+ 2 i) N) (< j N)), 21693#(or (<= N j) (< (+ j 1) N)), 21694#(or (<= N j) (< (+ j 1) N) (< i N)), 21692#(or (<= N i) (< (+ i 1) N) (< j N)), 21690#(or (< j N) (< i N)), 21695#(or (<= N j) (<= N i) (< (+ i 1) N) (< (+ j 1) N)), 21698#(or (<= N (+ i 1)) (<= N j) (< (+ 2 i) N) (< (+ j 1) N)), 21688#(< j N), 21691#(or (<= N i) (< (+ i 1) N)), 21701#(or (<= N j) (<= (+ 3 N) i) (< (+ j 1) N)), 21696#(or (<= N (+ i 1)) (< (+ 2 i) N)), 21699#(or (<= (+ 3 N) i) (< j N)), 21700#(and (or (= (+ i (* (- 1) j)) 0) (<= N l)) (or (<= i l) (<= N l)))] [2022-03-15 21:30:33,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 21:30:33,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 21:30:33,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2022-03-15 21:30:33,757 INFO L87 Difference]: Start difference. First operand 775 states and 2951 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 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 21:30:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:35,770 INFO L93 Difference]: Finished difference Result 3382 states and 12457 transitions. [2022-03-15 21:30:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-15 21:30:35,770 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 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 25 [2022-03-15 21:30:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:35,784 INFO L225 Difference]: With dead ends: 3382 [2022-03-15 21:30:35,784 INFO L226 Difference]: Without dead ends: 3364 [2022-03-15 21:30:35,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3330 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2119, Invalid=8387, Unknown=0, NotChecked=0, Total=10506 [2022-03-15 21:30:35,786 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 688 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:35,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 176 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 21:30:35,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2022-03-15 21:30:35,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 1103. [2022-03-15 21:30:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 3.99546279491833) internal successors, (4403), 1102 states have internal predecessors, (4403), 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 21:30:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 4403 transitions. [2022-03-15 21:30:35,818 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 4403 transitions. Word has length 25 [2022-03-15 21:30:35,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:35,819 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 4403 transitions. [2022-03-15 21:30:35,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 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 21:30:35,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 4403 transitions. [2022-03-15 21:30:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-15 21:30:35,821 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:35,821 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:35,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 21:30:36,036 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,SelfDestructingSolverStorable17 [2022-03-15 21:30:36,036 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:36,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:36,037 INFO L85 PathProgramCache]: Analyzing trace with hash 737787592, now seen corresponding path program 13 times [2022-03-15 21:30:36,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:36,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568952510] [2022-03-15 21:30:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:36,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:36,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:36,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568952510] [2022-03-15 21:30:36,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568952510] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:36,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158815408] [2022-03-15 21:30:36,068 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:30:36,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:36,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:36,069 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 21:30:36,070 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 21:30:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:36,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 21:30:36,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:36,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:36,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158815408] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:36,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:36,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-03-15 21:30:36,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [26364740] [2022-03-15 21:30:36,162 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:36,163 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:36,172 INFO L252 McrAutomatonBuilder]: Finished intersection with 83 states and 162 transitions. [2022-03-15 21:30:36,172 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:36,376 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [27589#(< i N), 27590#(or (<= N l) (< i N)), 27588#(or (<= i l) (<= N l))] [2022-03-15 21:30:36,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 21:30:36,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:36,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 21:30:36,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-03-15 21:30:36,377 INFO L87 Difference]: Start difference. First operand 1103 states and 4403 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 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 21:30:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:36,498 INFO L93 Difference]: Finished difference Result 1853 states and 6942 transitions. [2022-03-15 21:30:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 21:30:36,498 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 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 25 [2022-03-15 21:30:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:36,506 INFO L225 Difference]: With dead ends: 1853 [2022-03-15 21:30:36,506 INFO L226 Difference]: Without dead ends: 1841 [2022-03-15 21:30:36,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-03-15 21:30:36,506 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 159 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:36,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 47 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2022-03-15 21:30:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1318. [2022-03-15 21:30:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1317 states have (on average 4.1070615034168565) internal successors, (5409), 1317 states have internal predecessors, (5409), 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 21:30:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 5409 transitions. [2022-03-15 21:30:36,531 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 5409 transitions. Word has length 25 [2022-03-15 21:30:36,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:36,532 INFO L470 AbstractCegarLoop]: Abstraction has 1318 states and 5409 transitions. [2022-03-15 21:30:36,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 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 21:30:36,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 5409 transitions. [2022-03-15 21:30:36,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-15 21:30:36,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:36,535 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:36,553 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 21:30:36,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:36,750 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:36,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1883118958, now seen corresponding path program 14 times [2022-03-15 21:30:36,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:36,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428224323] [2022-03-15 21:30:36,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:36,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:36,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:36,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428224323] [2022-03-15 21:30:36,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428224323] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:36,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601135611] [2022-03-15 21:30:36,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:30:36,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:36,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:36,785 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 21:30:36,786 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 21:30:36,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:30:36,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:36,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 21:30:36,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:36,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:36,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601135611] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:36,910 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:36,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-03-15 21:30:36,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [453918143] [2022-03-15 21:30:36,911 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:36,912 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:36,921 INFO L252 McrAutomatonBuilder]: Finished intersection with 93 states and 189 transitions. [2022-03-15 21:30:36,922 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:37,267 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [32248#(or (<= N i) (<= (+ 2 i) N))] [2022-03-15 21:30:37,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 21:30:37,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 21:30:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-03-15 21:30:37,268 INFO L87 Difference]: Start difference. First operand 1318 states and 5409 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 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 21:30:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:37,408 INFO L93 Difference]: Finished difference Result 2204 states and 8298 transitions. [2022-03-15 21:30:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 21:30:37,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 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 25 [2022-03-15 21:30:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:37,419 INFO L225 Difference]: With dead ends: 2204 [2022-03-15 21:30:37,419 INFO L226 Difference]: Without dead ends: 2204 [2022-03-15 21:30:37,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 95 SyntacticMatches, 14 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 21:30:37,420 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 105 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:37,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 45 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:37,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2022-03-15 21:30:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1392. [2022-03-15 21:30:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 4.141624730409777) internal successors, (5761), 1391 states have internal predecessors, (5761), 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 21:30:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5761 transitions. [2022-03-15 21:30:37,452 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5761 transitions. Word has length 25 [2022-03-15 21:30:37,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:37,452 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5761 transitions. [2022-03-15 21:30:37,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 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 21:30:37,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5761 transitions. [2022-03-15 21:30:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-15 21:30:37,455 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:37,455 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:37,477 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 21:30:37,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:37,675 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:37,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:37,676 INFO L85 PathProgramCache]: Analyzing trace with hash 192880534, now seen corresponding path program 15 times [2022-03-15 21:30:37,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:37,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832566231] [2022-03-15 21:30:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:37,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:37,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:37,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832566231] [2022-03-15 21:30:37,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832566231] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:37,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195005267] [2022-03-15 21:30:37,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:30:37,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:37,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:37,709 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 21:30:37,710 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 21:30:37,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 21:30:37,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:37,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 21:30:37,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:37,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:37,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195005267] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:37,812 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:37,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-03-15 21:30:37,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [984852624] [2022-03-15 21:30:37,812 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:37,814 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:37,823 INFO L252 McrAutomatonBuilder]: Finished intersection with 96 states and 189 transitions. [2022-03-15 21:30:37,823 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:38,081 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [37400#(< i N), 37402#(or (<= N (+ l 1)) (< i N)), 37401#(or (<= N l) (< i N))] [2022-03-15 21:30:38,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 21:30:38,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:38,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 21:30:38,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-03-15 21:30:38,082 INFO L87 Difference]: Start difference. First operand 1392 states and 5761 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 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 21:30:38,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:38,237 INFO L93 Difference]: Finished difference Result 2776 states and 11007 transitions. [2022-03-15 21:30:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 21:30:38,237 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 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 25 [2022-03-15 21:30:38,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:38,244 INFO L225 Difference]: With dead ends: 2776 [2022-03-15 21:30:38,244 INFO L226 Difference]: Without dead ends: 2765 [2022-03-15 21:30:38,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-03-15 21:30:38,245 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 169 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:38,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 57 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2022-03-15 21:30:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 1543. [2022-03-15 21:30:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 4.195849546044099) internal successors, (6470), 1542 states have internal predecessors, (6470), 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 21:30:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 6470 transitions. [2022-03-15 21:30:38,294 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 6470 transitions. Word has length 25 [2022-03-15 21:30:38,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:38,294 INFO L470 AbstractCegarLoop]: Abstraction has 1543 states and 6470 transitions. [2022-03-15 21:30:38,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 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 21:30:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 6470 transitions. [2022-03-15 21:30:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 21:30:38,298 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:38,298 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:38,316 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 21:30:38,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:38,511 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:38,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash -912455459, now seen corresponding path program 16 times [2022-03-15 21:30:38,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:38,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974778769] [2022-03-15 21:30:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:38,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 21:30:38,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:38,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974778769] [2022-03-15 21:30:38,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974778769] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:38,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537971527] [2022-03-15 21:30:38,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:30:38,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:38,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:38,548 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 21:30:38,549 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 21:30:38,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:30:38,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:38,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 21:30:38,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 21:30:38,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 21:30:38,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537971527] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:38,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:38,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-03-15 21:30:38,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [646059940] [2022-03-15 21:30:38,655 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:38,657 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:38,666 INFO L252 McrAutomatonBuilder]: Finished intersection with 88 states and 173 transitions. [2022-03-15 21:30:38,666 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:38,882 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [43437#(or (<= i l) (<= N l)), 43436#(< i N)] [2022-03-15 21:30:38,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 21:30:38,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 21:30:38,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-03-15 21:30:38,883 INFO L87 Difference]: Start difference. First operand 1543 states and 6470 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 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 21:30:39,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:39,034 INFO L93 Difference]: Finished difference Result 2098 states and 8164 transitions. [2022-03-15 21:30:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 21:30:39,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 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) Word has length 26 [2022-03-15 21:30:39,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:39,039 INFO L225 Difference]: With dead ends: 2098 [2022-03-15 21:30:39,039 INFO L226 Difference]: Without dead ends: 2095 [2022-03-15 21:30:39,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-03-15 21:30:39,040 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 97 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:39,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 59 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:30:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2022-03-15 21:30:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1525. [2022-03-15 21:30:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 4.206692913385827) internal successors, (6411), 1524 states have internal predecessors, (6411), 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 21:30:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 6411 transitions. [2022-03-15 21:30:39,069 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 6411 transitions. Word has length 26 [2022-03-15 21:30:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:39,069 INFO L470 AbstractCegarLoop]: Abstraction has 1525 states and 6411 transitions. [2022-03-15 21:30:39,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 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 21:30:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 6411 transitions. [2022-03-15 21:30:39,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 21:30:39,072 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:39,072 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:39,091 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 21:30:39,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:39,283 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash 157012108, now seen corresponding path program 17 times [2022-03-15 21:30:39,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:39,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788439701] [2022-03-15 21:30:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:39,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 21:30:39,334 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:39,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788439701] [2022-03-15 21:30:39,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788439701] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:39,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211875659] [2022-03-15 21:30:39,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:30:39,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:39,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:39,336 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 21:30:39,337 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 21:30:39,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 21:30:39,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:39,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 21:30:39,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:39,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:39,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211875659] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:39,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:39,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-03-15 21:30:39,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1463198545] [2022-03-15 21:30:39,465 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:39,467 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:39,478 INFO L252 McrAutomatonBuilder]: Finished intersection with 99 states and 209 transitions. [2022-03-15 21:30:39,478 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:40,389 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 13 new interpolants: [48770#(or (<= N i) (< (+ i 1) N) (<= (+ 3 j) N)), 48767#(or (<= N (+ i 1)) (< (+ 2 i) N) (<= (+ 3 j) N) (<= N (+ j 1))), 48761#(or (<= (+ 3 j) N) (<= N (+ j 1))), 48760#(or (<= N j) (<= (+ 2 j) N)), 48768#(or (<= (+ 2 j) N) (< i N)), 48763#(or (<= (+ j 1) N) (< i N)), 48764#(or (<= N j) (<= (+ 2 j) N) (< i N)), 48771#(or (<= N (+ i 1)) (< (+ 2 i) N) (<= (+ 3 j) N)), 48772#(and (or (= (+ i (* (- 1) j)) 0) (<= N l)) (or (<= i l) (<= N l))), 48769#(or (<= (+ 3 j) N) (< i N)), 48762#(< i N), 48766#(or (<= N i) (< (+ i 1) N) (<= (+ 3 j) N) (<= N (+ j 1))), 48765#(or (<= (+ 3 j) N) (<= N (+ j 1)) (< i N))] [2022-03-15 21:30:40,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 21:30:40,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:40,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 21:30:40,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-03-15 21:30:40,390 INFO L87 Difference]: Start difference. First operand 1525 states and 6411 transitions. Second operand has 22 states, 22 states have (on average 4.0) internal successors, (88), 21 states have internal predecessors, (88), 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 21:30:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:41,965 INFO L93 Difference]: Finished difference Result 5246 states and 20689 transitions. [2022-03-15 21:30:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 21:30:41,966 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 21 states have internal predecessors, (88), 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 26 [2022-03-15 21:30:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:41,980 INFO L225 Difference]: With dead ends: 5246 [2022-03-15 21:30:41,980 INFO L226 Difference]: Without dead ends: 5246 [2022-03-15 21:30:41,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2340 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1525, Invalid=5957, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 21:30:41,982 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 525 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:41,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 199 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 21:30:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2022-03-15 21:30:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 1891. [2022-03-15 21:30:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 4.307936507936508) internal successors, (8142), 1890 states have internal predecessors, (8142), 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 21:30:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 8142 transitions. [2022-03-15 21:30:42,039 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 8142 transitions. Word has length 26 [2022-03-15 21:30:42,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:42,039 INFO L470 AbstractCegarLoop]: Abstraction has 1891 states and 8142 transitions. [2022-03-15 21:30:42,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 21 states have internal predecessors, (88), 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 21:30:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 8142 transitions. [2022-03-15 21:30:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 21:30:42,045 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:42,045 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:42,079 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 21:30:42,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:42,267 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1629691190, now seen corresponding path program 18 times [2022-03-15 21:30:42,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:42,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185518556] [2022-03-15 21:30:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:42,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:30:42,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:42,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185518556] [2022-03-15 21:30:42,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185518556] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:42,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945858459] [2022-03-15 21:30:42,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:30:42,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:42,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:42,311 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:30:42,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 21:30:42,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 21:30:42,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:30:42,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 21:30:42,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 21:30:42,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 21:30:42,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945858459] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:30:42,435 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:30:42,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 11 [2022-03-15 21:30:42,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2093158564] [2022-03-15 21:30:42,436 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:30:42,437 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:30:42,446 INFO L252 McrAutomatonBuilder]: Finished intersection with 83 states and 158 transitions. [2022-03-15 21:30:42,446 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:30:43,089 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 13 new interpolants: [58090#(or (<= N j) (<= (+ 2 j) N) (< i N)), 58095#(or (<= (+ 3 j) N) (<= N (+ j 1)) (< i N)), 58088#(or (<= (+ j 1) N) (< i N)), 58099#(or (<= N j) (<= (+ 3 j) N)), 58091#(or (<= N i) (< (+ i 1) N)), 58093#(or (<= N j) (<= N i) (< (+ i 1) N) (<= (+ 2 j) N)), 58097#(or (<= N (+ i 1)) (< (+ 2 i) N) (<= (+ 3 j) N) (<= N (+ j 1))), 58096#(or (<= N i) (< (+ i 1) N) (<= (+ 3 j) N) (<= N (+ j 1))), 58098#(or (<= N i) (<= (+ 3 j) N)), 58089#(or (<= N j) (<= (+ 2 j) N)), 58087#(< i N), 58092#(or (<= (+ j 1) N) (<= N i) (< (+ i 1) N)), 58094#(or (<= (+ 3 j) N) (<= N (+ j 1)))] [2022-03-15 21:30:43,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 21:30:43,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:30:43,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 21:30:43,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2022-03-15 21:30:43,090 INFO L87 Difference]: Start difference. First operand 1891 states and 8142 transitions. Second operand has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 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 21:30:44,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:30:44,093 INFO L93 Difference]: Finished difference Result 5033 states and 20894 transitions. [2022-03-15 21:30:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 21:30:44,094 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 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 26 [2022-03-15 21:30:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:30:44,108 INFO L225 Difference]: With dead ends: 5033 [2022-03-15 21:30:44,108 INFO L226 Difference]: Without dead ends: 5033 [2022-03-15 21:30:44,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 83 SyntacticMatches, 8 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1002, Invalid=3968, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 21:30:44,110 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 406 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 21:30:44,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 87 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 21:30:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5033 states. [2022-03-15 21:30:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5033 to 1866. [2022-03-15 21:30:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 4.458981233243968) internal successors, (8316), 1865 states have internal predecessors, (8316), 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 21:30:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 8316 transitions. [2022-03-15 21:30:44,167 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 8316 transitions. Word has length 26 [2022-03-15 21:30:44,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:30:44,167 INFO L470 AbstractCegarLoop]: Abstraction has 1866 states and 8316 transitions. [2022-03-15 21:30:44,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 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 21:30:44,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 8316 transitions. [2022-03-15 21:30:44,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 21:30:44,191 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:30:44,191 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:30:44,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 21:30:44,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:44,392 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 21:30:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:30:44,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1992703099, now seen corresponding path program 19 times [2022-03-15 21:30:44,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:30:44,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524839143] [2022-03-15 21:30:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:30:44,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:30:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-15 21:30:44,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:30:44,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524839143] [2022-03-15 21:30:44,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524839143] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:30:44,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453292044] [2022-03-15 21:30:44,485 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:30:44,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:30:44,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:30:44,486 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 21:30:44,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 21:30:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:30:44,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 21:30:44,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:30:44,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 21:30:44,556 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 12 treesize of output 14 [2022-03-15 21:30:44,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 21:30:44,573 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 12 treesize of output 14 [2022-03-15 21:30:44,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 21:30:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 21:30:44,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:30:53,259 INFO L353 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2022-03-15 21:30:53,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1792 treesize of output 1677 [2022-03-15 21:30:53,343 WARN L325 FreeRefinementEngine]: Global settings require throwing the following exception [2022-03-15 21:30:53,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 21:30:53,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-15 21:30:53,544 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-03-15 21:30:53,546 INFO L158 Benchmark]: Toolchain (without parser) took 42018.63ms. Allocated memory was 195.0MB in the beginning and 369.1MB in the end (delta: 174.1MB). Free memory was 160.3MB in the beginning and 334.4MB in the end (delta: -174.1MB). Peak memory consumption was 210.6MB. Max. memory is 8.0GB. [2022-03-15 21:30:53,546 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 161.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 21:30:53,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.58ms. Allocated memory is still 195.0MB. Free memory was 160.3MB in the beginning and 158.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 21:30:53,547 INFO L158 Benchmark]: Boogie Preprocessor took 10.78ms. Allocated memory is still 195.0MB. Free memory was 158.7MB in the beginning and 157.7MB in the end (delta: 916.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 21:30:53,547 INFO L158 Benchmark]: RCFGBuilder took 202.25ms. Allocated memory is still 195.0MB. Free memory was 157.6MB in the beginning and 147.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-15 21:30:53,547 INFO L158 Benchmark]: TraceAbstraction took 41784.91ms. Allocated memory was 195.0MB in the beginning and 369.1MB in the end (delta: 174.1MB). Free memory was 147.3MB in the beginning and 334.4MB in the end (delta: -187.2MB). Peak memory consumption was 198.0MB. Max. memory is 8.0GB. [2022-03-15 21:30:53,547 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 0.09ms. Allocated memory is still 195.0MB. Free memory is still 161.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.58ms. Allocated memory is still 195.0MB. Free memory was 160.3MB in the beginning and 158.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.78ms. Allocated memory is still 195.0MB. Free memory was 158.7MB in the beginning and 157.7MB in the end (delta: 916.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 202.25ms. Allocated memory is still 195.0MB. Free memory was 157.6MB in the beginning and 147.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 41784.91ms. Allocated memory was 195.0MB in the beginning and 369.1MB in the end (delta: 174.1MB). Free memory was 147.3MB in the beginning and 334.4MB in the end (delta: -187.2MB). Peak memory consumption was 198.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 45 PlacesBefore, 36 PlacesAfterwards, 35 TransitionsBefore, 26 TransitionsAfterwards, 340 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 413 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 358, positive: 343, positive conditional: 0, positive unconditional: 343, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 166, positive: 156, positive conditional: 0, positive unconditional: 156, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 358, positive: 187, positive conditional: 0, positive unconditional: 187, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 166, unknown conditional: 0, unknown unconditional: 166] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-15 21:30:53,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...