/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/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/09-regions_16-arrayloop_rc.line749.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-29 19:32:36,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 19:32:36,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 19:32:36,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 19:32:36,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 19:32:36,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 19:32:36,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 19:32:36,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 19:32:36,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 19:32:37,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 19:32:37,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 19:32:37,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-29 19:32:37,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-29 19:32:37,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-29 19:32:37,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-29 19:32:37,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-29 19:32:37,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-29 19:32:37,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-29 19:32:37,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-29 19:32:37,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-29 19:32:37,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-29 19:32:37,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-29 19:32:37,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-29 19:32:37,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-29 19:32:37,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-29 19:32:37,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-29 19:32:37,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-29 19:32:37,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-29 19:32:37,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-29 19:32:37,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 19:32:37,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 19:32:37,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 19:32:37,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 19:32:37,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-29 19:32:37,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-29 19:32:37,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 19:32:37,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 19:32:37,066 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 19:32:37,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 19:32:37,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 19:32:37,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 19:32:37,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 19:32:37,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 19:32:37,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-29 19:32:37,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-29 19:32:37,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-29 19:32:37,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 19:32:37,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 19:32:37,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 19:32:37,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-29 19:32:37,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 19:32:37,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 19:32:37,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-29 19:32:37,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-29 19:32:37,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-29 19:32:37,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 19:32:37,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-29 19:32:37,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-29 19:32:37,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 19:32:37,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-29 19:32:37,070 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-29 19:32:37,070 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-29 19:32:37,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-29 19:32:37,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-29 19:32:37,070 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-29 19:32:37,070 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-29 19:32:37,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-29 19:32:37,071 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 19:32:37,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 19:32:37,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 19:32:37,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 19:32:37,362 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 19:32:37,363 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 19:32:37,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/09-regions_16-arrayloop_rc.line749.bpl [2022-09-29 19:32:37,365 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/09-regions_16-arrayloop_rc.line749.bpl' [2022-09-29 19:32:37,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 19:32:37,430 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-29 19:32:37,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 19:32:37,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 19:32:37,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 19:32:37,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 07:32:37" (1/1) ... [2022-09-29 19:32:37,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 07:32:37" (1/1) ... [2022-09-29 19:32:37,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 07:32:37" (1/1) ... [2022-09-29 19:32:37,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 07:32:37" (1/1) ... [2022-09-29 19:32:37,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 07:32:37" (1/1) ... [2022-09-29 19:32:37,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 07:32:37" (1/1) ... [2022-09-29 19:32:37,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 07:32:37" (1/1) ... [2022-09-29 19:32:37,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 19:32:37,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 19:32:37,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 19:32:37,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 19:32:37,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 07:32:37" (1/1) ... [2022-09-29 19:32:37,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-29 19:32:37,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 19:32:37,581 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) [2022-09-29 19:32:37,591 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 [2022-09-29 19:32:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-29 19:32:37,628 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-29 19:32:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 19:32:37,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 19:32:37,629 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-29 19:32:37,757 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 19:32:37,758 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 19:32:38,218 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 19:32:38,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 19:32:38,235 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-29 19:32:38,242 INFO L202 PluginConnector]: Adding new model 09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 07:32:38 BoogieIcfgContainer [2022-09-29 19:32:38,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 19:32:38,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-29 19:32:38,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-29 19:32:38,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-29 19:32:38,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 07:32:37" (1/2) ... [2022-09-29 19:32:38,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db2face and model type 09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 07:32:38, skipping insertion in model container [2022-09-29 19:32:38,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "09-regions_16-arrayloop_rc.line749.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 07:32:38" (2/2) ... [2022-09-29 19:32:38,258 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_16-arrayloop_rc.line749.bpl [2022-09-29 19:32:38,266 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-29 19:32:38,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-29 19:32:38,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-29 19:32:38,278 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-29 19:32:38,414 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-29 19:32:38,476 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-29 19:32:38,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-29 19:32:38,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 19:32:38,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-29 19:32:38,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-09-29 19:32:38,514 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-29 19:32:38,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-29 19:32:38,526 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3c8b3ea8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-29 19:32:38,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-29 19:32:38,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 19:32:38,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 19:32:38,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1969963891, now seen corresponding path program 1 times [2022-09-29 19:32:38,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 19:32:38,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723555624] [2022-09-29 19:32:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 19:32:38,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 19:32:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 19:32:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 19:32:39,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 19:32:39,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723555624] [2022-09-29 19:32:39,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723555624] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 19:32:39,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 19:32:39,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-29 19:32:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504638338] [2022-09-29 19:32:39,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 19:32:39,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-29 19:32:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 19:32:39,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-29 19:32:39,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-29 19:32:39,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:39,101 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 19:32:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 19:32:39,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:39,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-29 19:32:39,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 19:32:39,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 19:32:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1328877748, now seen corresponding path program 1 times [2022-09-29 19:32:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 19:32:39,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549220096] [2022-09-29 19:32:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 19:32:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 19:32:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 19:32:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 19:32:39,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 19:32:39,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549220096] [2022-09-29 19:32:39,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549220096] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 19:32:39,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 19:32:39,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-29 19:32:39,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587616722] [2022-09-29 19:32:39,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 19:32:39,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-29 19:32:39,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 19:32:39,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-29 19:32:39,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-29 19:32:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:39,303 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 19:32:39,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 19:32:39,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:39,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:32:39,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-29 19:32:39,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 19:32:39,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 19:32:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2132551964, now seen corresponding path program 1 times [2022-09-29 19:32:39,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 19:32:39,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529544861] [2022-09-29 19:32:39,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 19:32:39,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 19:32:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 19:32:39,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 19:32:39,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 19:32:39,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529544861] [2022-09-29 19:32:39,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529544861] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 19:32:39,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061802869] [2022-09-29 19:32:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 19:32:39,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 19:32:39,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 19:32:39,613 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) [2022-09-29 19:32:39,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-29 19:32:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 19:32:39,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-29 19:32:39,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 19:32:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 19:32:40,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-29 19:32:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 19:32:40,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061802869] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-29 19:32:40,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-29 19:32:40,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-29 19:32:40,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971927690] [2022-09-29 19:32:40,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-29 19:32:40,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-29 19:32:40,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 19:32:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-29 19:32:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-29 19:32:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:40,139 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 19:32:40,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 19:32:40,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:40,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:32:40,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:32:40,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-29 19:32:40,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-29 19:32:40,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-29 19:32:40,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 19:32:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 19:32:40,502 INFO L85 PathProgramCache]: Analyzing trace with hash 666835172, now seen corresponding path program 2 times [2022-09-29 19:32:40,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 19:32:40,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442012767] [2022-09-29 19:32:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 19:32:40,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 19:32:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 19:32:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 19:32:40,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 19:32:40,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442012767] [2022-09-29 19:32:40,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442012767] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 19:32:40,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176166254] [2022-09-29 19:32:40,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-29 19:32:40,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 19:32:40,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 19:32:40,828 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) [2022-09-29 19:32:40,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-29 19:32:41,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-29 19:32:41,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-29 19:32:41,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 110 conjunts are in the unsatisfiable core [2022-09-29 19:32:41,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 19:32:41,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-29 19:32:42,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-29 19:32:42,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-29 19:32:43,120 INFO L356 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-09-29 19:32:43,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 60 [2022-09-29 19:32:43,149 INFO L356 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-09-29 19:32:43,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 53 treesize of output 48 [2022-09-29 19:32:43,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-29 19:32:43,944 INFO L356 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2022-09-29 19:32:43,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 110 [2022-09-29 19:32:43,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-29 19:32:43,978 INFO L356 Elim1Store]: treesize reduction 57, result has 35.2 percent of original size [2022-09-29 19:32:43,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 103 [2022-09-29 19:32:44,518 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-29 19:32:44,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 88 [2022-09-29 19:32:44,529 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-29 19:32:44,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 77 treesize of output 61 [2022-09-29 19:32:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-09-29 19:32:44,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-29 19:32:44,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176166254] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 19:32:44,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-29 19:32:44,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [9] total 37 [2022-09-29 19:32:44,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788809608] [2022-09-29 19:32:44,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 19:32:44,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-09-29 19:32:44,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 19:32:44,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-09-29 19:32:44,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1107, Unknown=0, NotChecked=0, Total=1332 [2022-09-29 19:32:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:44,766 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 19:32:44,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 7.9655172413793105) internal successors, (231), 30 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 19:32:44,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:44,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:32:44,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-29 19:32:44,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:32:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-29 19:32:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-29 19:32:46,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-29 19:32:47,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 19:32:47,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 19:32:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 19:32:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2099020329, now seen corresponding path program 1 times [2022-09-29 19:32:47,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 19:32:47,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259465665] [2022-09-29 19:32:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 19:32:47,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 19:32:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 19:32:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-09-29 19:32:47,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 19:32:47,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259465665] [2022-09-29 19:32:47,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259465665] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 19:32:47,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180834261] [2022-09-29 19:32:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 19:32:47,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 19:32:47,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 19:32:47,394 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) [2022-09-29 19:32:47,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-29 19:32:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 19:32:47,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-29 19:32:47,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 19:32:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-09-29 19:32:47,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-29 19:32:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-09-29 19:32:48,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180834261] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-29 19:32:48,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-29 19:32:48,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-09-29 19:32:48,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784674296] [2022-09-29 19:32:48,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-29 19:32:48,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-29 19:32:48,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 19:32:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-29 19:32:48,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-09-29 19:32:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:48,076 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 19:32:48,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 31.944444444444443) internal successors, (575), 18 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 19:32:48,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:48,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:32:48,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-29 19:32:48,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2022-09-29 19:32:48,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:32:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-29 19:32:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-29 19:32:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-29 19:32:48,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-29 19:32:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 19:32:48,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 19:32:48,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 19:32:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2128348713, now seen corresponding path program 2 times [2022-09-29 19:32:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 19:32:48,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056493289] [2022-09-29 19:32:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 19:32:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 19:32:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 19:32:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 0 proven. 1120 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-09-29 19:32:49,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 19:32:49,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056493289] [2022-09-29 19:32:49,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056493289] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 19:32:49,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902720343] [2022-09-29 19:32:49,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-29 19:32:49,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 19:32:49,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 19:32:49,072 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) [2022-09-29 19:32:49,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-29 19:32:49,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-29 19:32:49,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-29 19:32:49,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-29 19:32:49,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 19:32:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 0 proven. 1120 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-09-29 19:32:49,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-29 19:32:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 0 proven. 1120 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-09-29 19:32:50,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902720343] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-29 19:32:50,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-29 19:32:50,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-09-29 19:32:50,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931446167] [2022-09-29 19:32:50,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-29 19:32:50,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-29 19:32:50,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 19:32:50,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-29 19:32:50,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-09-29 19:32:50,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:50,533 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 19:32:50,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 31.91304347826087) internal successors, (734), 23 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 19:32:50,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:50,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:32:50,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-29 19:32:50,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2022-09-29 19:32:50,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-09-29 19:32:50,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:32:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:32:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-29 19:32:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-29 19:32:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-29 19:32:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-29 19:32:50,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-29 19:32:51,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 19:32:51,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 19:32:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 19:32:51,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1365186055, now seen corresponding path program 3 times [2022-09-29 19:32:51,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 19:32:51,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280994668] [2022-09-29 19:32:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 19:32:51,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 19:32:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 19:32:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 2395 trivial. 0 not checked. [2022-09-29 19:32:53,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 19:32:53,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280994668] [2022-09-29 19:32:53,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280994668] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 19:32:53,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382153785] [2022-09-29 19:32:53,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-29 19:32:53,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 19:32:53,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 19:32:53,654 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) [2022-09-29 19:32:53,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-29 19:32:54,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-29 19:32:54,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-29 19:32:54,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 123 conjunts are in the unsatisfiable core [2022-09-29 19:32:54,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 19:32:56,452 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-29 19:32:56,453 INFO L390 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 11 treesize of output 11 [2022-09-29 19:32:56,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-29 19:32:58,216 INFO L356 Elim1Store]: treesize reduction 35, result has 48.5 percent of original size [2022-09-29 19:32:58,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 90 [2022-09-29 19:32:58,228 INFO L356 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-09-29 19:32:58,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 70 [2022-09-29 19:32:58,727 INFO L356 Elim1Store]: treesize reduction 43, result has 36.8 percent of original size [2022-09-29 19:32:58,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 145 treesize of output 150 [2022-09-29 19:32:58,743 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-09-29 19:32:58,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 151 [2022-09-29 19:32:58,764 INFO L390 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 15 treesize of output 3 [2022-09-29 19:32:58,790 INFO L390 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 15 treesize of output 3 [2022-09-29 19:32:59,195 INFO L356 Elim1Store]: treesize reduction 3, result has 81.3 percent of original size [2022-09-29 19:32:59,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 76 [2022-09-29 19:32:59,203 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-29 19:32:59,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 61 [2022-09-29 19:32:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 2395 trivial. 0 not checked. [2022-09-29 19:32:59,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-29 19:32:59,598 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1721 (Array Int Int))) (let ((.cse0 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (<= (+ (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| v_ArrVal_1721) |c_~#slot~0.base|) .cse0) 8) (select |c_#length| (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| v_ArrVal_1722) |c_~#slot~0.base|) .cse0))))) (forall ((v_ArrVal_1721 (Array Int Int))) (<= 0 (+ (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| v_ArrVal_1721) |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 4)))) is different from false [2022-09-29 19:32:59,631 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1721 (Array Int Int))) (<= 0 (+ (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 4))) (forall ((v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1721 (Array Int Int))) (let ((.cse0 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (<= (+ 8 (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) .cse0)) (select |c_#length| (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1722) |c_~#slot~0.base|) .cse0)))))) is different from false [2022-09-29 19:32:59,655 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1721 (Array Int Int))) (let ((.cse0 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1722) |c_~#slot~0.base|) .cse0))))) (forall ((v_ArrVal_1721 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 4)))) is different from false [2022-09-29 19:32:59,679 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1721 (Array Int Int))) (let ((.cse0 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (<= (+ (select (select (store (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| (store (select |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base|) |c_ULTIMATE.start_write~$Pointer$_#ptr#1.offset| |c_ULTIMATE.start_write~$Pointer$_#value#1.offset|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) .cse0) 8) (select |c_#length| (select (select (store (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| (store (select |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base|) |c_ULTIMATE.start_write~$Pointer$_#ptr#1.offset| |c_ULTIMATE.start_write~$Pointer$_#value#1.base|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1722) |c_~#slot~0.base|) .cse0))))) (forall ((v_ArrVal_1721 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| (store (select |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base|) |c_ULTIMATE.start_write~$Pointer$_#ptr#1.offset| |c_ULTIMATE.start_write~$Pointer$_#value#1.offset|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 4)))) is different from false [2022-09-29 19:33:00,890 INFO L356 Elim1Store]: treesize reduction 21, result has 65.0 percent of original size [2022-09-29 19:33:00,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 128 treesize of output 128 [2022-09-29 19:33:00,915 INFO L356 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2022-09-29 19:33:00,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 121 [2022-09-29 19:33:00,941 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-29 19:33:00,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 104 treesize of output 129 [2022-09-29 19:33:00,967 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-29 19:33:00,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 162 treesize of output 171 [2022-09-29 19:33:00,982 INFO L390 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 109 treesize of output 97 [2022-09-29 19:33:00,990 INFO L390 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 97 treesize of output 85 [2022-09-29 19:33:00,998 INFO L390 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 85 treesize of output 79 [2022-09-29 19:33:03,242 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-29 19:33:03,243 INFO L390 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 69 treesize of output 74 [2022-09-29 19:33:03,731 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-09-29 19:33:03,732 INFO L390 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 13 treesize of output 12 [2022-09-29 19:33:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 53 proven. 41 refuted. 0 times theorem prover too weak. 2395 trivial. 10 not checked. [2022-09-29 19:33:03,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382153785] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-29 19:33:03,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-29 19:33:03,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 35, 31] total 98 [2022-09-29 19:33:03,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746223280] [2022-09-29 19:33:03,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-29 19:33:03,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-09-29 19:33:03,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 19:33:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-09-29 19:33:03,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=8485, Unknown=5, NotChecked=756, Total=9702 [2022-09-29 19:33:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:33:03,805 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 19:33:03,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 10.214285714285714) internal successors, (1001), 99 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 19:33:03,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:33:03,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:33:03,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-29 19:33:03,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2022-09-29 19:33:03,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-09-29 19:33:03,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2022-09-29 19:33:03,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:33:26,142 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 235 DAG size of output: 228 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-29 19:33:26,595 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (< (select |c_#length| |c_ULTIMATE.start_list_add_~list#1.base|) (+ 8 |c_ULTIMATE.start_list_add_~list#1.offset|))) (.cse0 (forall ((v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1721 (Array Int Int))) (let ((.cse7 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (<= (+ (select (select (store (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| (store (select |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base|) |c_ULTIMATE.start_write~$Pointer$_#ptr#1.offset| |c_ULTIMATE.start_write~$Pointer$_#value#1.offset|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) .cse7) 8) (select |c_#length| (select (select (store (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| (store (select |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base|) |c_ULTIMATE.start_write~$Pointer$_#ptr#1.offset| |c_ULTIMATE.start_write~$Pointer$_#value#1.base|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1722) |c_~#slot~0.base|) .cse7)))))) (.cse4 (forall ((v_ArrVal_1721 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| (store (select |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base|) |c_ULTIMATE.start_write~$Pointer$_#ptr#1.offset| |c_ULTIMATE.start_write~$Pointer$_#value#1.offset|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 4))))) (and .cse0 (or (and (forall ((v_ArrVal_1721 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_list_add_~list#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_list_add_~list#1.base|) (+ 4 |c_ULTIMATE.start_list_add_~list#1.offset|) |c_ULTIMATE.start_list_add_~node#1.offset|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 4))) (forall ((v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1721 (Array Int Int))) (let ((.cse1 (+ 4 |c_ULTIMATE.start_list_add_~list#1.offset|)) (.cse2 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_list_add_~list#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_list_add_~list#1.base|) .cse1 |c_ULTIMATE.start_list_add_~node#1.offset|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) .cse2) 8) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_list_add_~list#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_list_add_~list#1.base|) .cse1 |c_ULTIMATE.start_list_add_~node#1.base|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1722) |c_~#slot~0.base|) .cse2)))))) .cse3) .cse4 (not (= (select |c_#valid| |c_~#slot~0.base|) 0)) (or (and (forall ((v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1721 (Array Int Int))) (let ((.cse5 (+ 4 |c_ULTIMATE.start_list_add_~list#1.offset|)) (.cse6 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (<= (+ (select (select (store (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_list_add_~list#1.base| (store (select |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_list_add_~list#1.base|) .cse5 |c_ULTIMATE.start_list_add_~node#1.offset|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) .cse6) 8) (select |c_#length| (select (select (store (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_list_add_~list#1.base| (store (select |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_list_add_~list#1.base|) .cse5 |c_ULTIMATE.start_list_add_~node#1.base|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1722) |c_~#slot~0.base|) .cse6))))) (forall ((v_ArrVal_1721 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_list_add_~list#1.base| (store (select |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_list_add_~list#1.base|) (+ 4 |c_ULTIMATE.start_list_add_~list#1.offset|) |c_ULTIMATE.start_list_add_~node#1.offset|)) |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 4)))) .cse3) (or (not (<= (+ |c_ULTIMATE.start_write~$Pointer$_#sizeOfWrittenType#1| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.offset|) (select |c_#length| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base|))) (and .cse0 .cse4)))) is different from false [2022-09-29 19:33:26,919 WARN L833 $PredicateComparison]: unable to prove that (and (not (= (select |c_#valid| |c_~#slot~0.base|) 0)) (forall ((v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1721 (Array Int Int))) (let ((.cse0 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1722) |c_~#slot~0.base|) .cse0))))) (forall ((v_ArrVal_1721 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 4)))) is different from false [2022-09-29 19:33:26,998 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1721 (Array Int Int))) (<= 0 (+ (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 4))) (not (= (select |c_#valid| |c_~#slot~0.base|) 0)) (forall ((v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1721 (Array Int Int))) (let ((.cse0 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (<= (+ 8 (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1721) |c_~#slot~0.base|) .cse0)) (select |c_#length| (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1722) |c_~#slot~0.base|) .cse0)))))) is different from false [2022-09-29 19:33:27,002 WARN L833 $PredicateComparison]: unable to prove that (and (not (= (select |c_#valid| |c_~#slot~0.base|) 0)) (forall ((v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1721 (Array Int Int))) (let ((.cse0 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (<= (+ (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| v_ArrVal_1721) |c_~#slot~0.base|) .cse0) 8) (select |c_#length| (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| v_ArrVal_1722) |c_~#slot~0.base|) .cse0))))) (forall ((v_ArrVal_1721 (Array Int Int))) (<= 0 (+ (select (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| v_ArrVal_1721) |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4))) 4)))) is different from false [2022-09-29 19:33:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 19:33:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 19:33:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-29 19:33:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-29 19:33:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-29 19:33:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-29 19:33:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-09-29 19:33:27,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-29 19:33:27,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 19:33:27,834 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 19:33:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 19:33:27,835 INFO L85 PathProgramCache]: Analyzing trace with hash 888252053, now seen corresponding path program 1 times [2022-09-29 19:33:27,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 19:33:27,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952744255] [2022-09-29 19:33:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 19:33:27,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 19:33:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 19:33:29,542 ERROR L253 erpolLogProxyWrapper]: Interpolant 1026 not inductive [2022-09-29 19:33:29,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-29 19:33:29,629 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:233) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:879) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:803) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-09-29 19:33:29,635 INFO L158 Benchmark]: Toolchain (without parser) took 52204.29ms. Allocated memory was 191.9MB in the beginning and 660.6MB in the end (delta: 468.7MB). Free memory was 147.7MB in the beginning and 478.5MB in the end (delta: -330.8MB). Peak memory consumption was 443.7MB. Max. memory is 8.0GB. [2022-09-29 19:33:29,635 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.23ms. Allocated memory is still 191.9MB. Free memory was 151.0MB in the beginning and 150.9MB in the end (delta: 79.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-29 19:33:29,636 INFO L158 Benchmark]: Boogie Preprocessor took 93.81ms. Allocated memory is still 191.9MB. Free memory was 147.6MB in the beginning and 144.3MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-29 19:33:29,636 INFO L158 Benchmark]: RCFGBuilder took 702.51ms. Allocated memory is still 191.9MB. Free memory was 144.3MB in the beginning and 152.2MB in the end (delta: -7.9MB). Peak memory consumption was 21.4MB. Max. memory is 8.0GB. [2022-09-29 19:33:29,636 INFO L158 Benchmark]: TraceAbstraction took 51386.53ms. Allocated memory was 191.9MB in the beginning and 660.6MB in the end (delta: 468.7MB). Free memory was 151.4MB in the beginning and 478.5MB in the end (delta: -327.1MB). Peak memory consumption was 446.4MB. Max. memory is 8.0GB. [2022-09-29 19:33:29,641 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 0.23ms. Allocated memory is still 191.9MB. Free memory was 151.0MB in the beginning and 150.9MB in the end (delta: 79.2kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 93.81ms. Allocated memory is still 191.9MB. Free memory was 147.6MB in the beginning and 144.3MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 702.51ms. Allocated memory is still 191.9MB. Free memory was 144.3MB in the beginning and 152.2MB in the end (delta: -7.9MB). Peak memory consumption was 21.4MB. Max. memory is 8.0GB. * TraceAbstraction took 51386.53ms. Allocated memory was 191.9MB in the beginning and 660.6MB in the end (delta: 468.7MB). Free memory was 151.4MB in the beginning and 478.5MB in the end (delta: -327.1MB). Peak memory consumption was 446.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:233) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-09-29 19:33:29,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-09-29 19:33:29,887 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...