/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/divinefifo_1w1r.line1211.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 15:16:51,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 15:16:51,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 15:16:51,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 15:16:51,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 15:16:51,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 15:16:51,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 15:16:51,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 15:16:51,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 15:16:51,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 15:16:51,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 15:16:51,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 15:16:51,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 15:16:51,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 15:16:51,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 15:16:51,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 15:16:51,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 15:16:51,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 15:16:51,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 15:16:51,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 15:16:51,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 15:16:51,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 15:16:51,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 15:16:51,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 15:16:51,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 15:16:51,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 15:16:51,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 15:16:51,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 15:16:51,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 15:16:51,707 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 15:16:51,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 15:16:51,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 15:16:51,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 15:16:51,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 15:16:51,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 15:16:51,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 15:16:51,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 15:16:51,710 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 15:16:51,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 15:16:51,710 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 15:16:51,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 15:16:51,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 15:16:51,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 15:16:51,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 15:16:51,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 15:16:51,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 15:16:51,711 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 15:16:51,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 15:16:51,712 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 15:16:51,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 15:16:51,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 15:16:51,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 15:16:51,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 15:16:51,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 15:16:51,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:16:51,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 15:16:51,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 15:16:51,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 15:16:51,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 15:16:51,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 15:16:51,714 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 15:16:51,714 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 15:16:51,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 15:16:51,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 15:16:51,714 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 15:16:51,715 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 15:16:51,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 15:16:51,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 15:16:51,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 15:16:51,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 15:16:51,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 15:16:51,954 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 15:16:51,955 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 15:16:51,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1211.bpl [2022-10-03 15:16:51,956 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1211.bpl' [2022-10-03 15:16:52,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 15:16:52,051 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 15:16:52,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 15:16:52,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 15:16:52,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 15:16:52,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:16:52" (1/1) ... [2022-10-03 15:16:52,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:16:52" (1/1) ... [2022-10-03 15:16:52,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:16:52" (1/1) ... [2022-10-03 15:16:52,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:16:52" (1/1) ... [2022-10-03 15:16:52,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:16:52" (1/1) ... [2022-10-03 15:16:52,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:16:52" (1/1) ... [2022-10-03 15:16:52,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:16:52" (1/1) ... [2022-10-03 15:16:52,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 15:16:52,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 15:16:52,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 15:16:52,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 15:16:52,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:16:52" (1/1) ... [2022-10-03 15:16:52,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:16:52,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:16:52,227 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) [2022-10-03 15:16:52,235 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 [2022-10-03 15:16:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 15:16:52,270 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 15:16:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 15:16:52,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 15:16:52,272 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-03 15:16:52,527 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 15:16:52,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 15:16:53,583 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 15:16:53,611 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 15:16:53,611 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 15:16:53,614 INFO L202 PluginConnector]: Adding new model divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:16:53 BoogieIcfgContainer [2022-10-03 15:16:53,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 15:16:53,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 15:16:53,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 15:16:53,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 15:16:53,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:16:52" (1/2) ... [2022-10-03 15:16:53,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29762a24 and model type divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:16:53, skipping insertion in model container [2022-10-03 15:16:53,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1211.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:16:53" (2/2) ... [2022-10-03 15:16:53,622 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.line1211.bpl [2022-10-03 15:16:53,628 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 15:16:53,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 15:16:53,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 15:16:53,637 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 15:16:53,793 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 15:16:53,862 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 15:16:53,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 15:16:53,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:16:53,864 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) [2022-10-03 15:16:53,877 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 [2022-10-03 15:16:53,907 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 15:16:53,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 15:16:53,921 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;@508c058, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 15:16:53,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 15:16:54,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:16:54,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:16:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1915804554, now seen corresponding path program 1 times [2022-10-03 15:16:54,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:16:54,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080523706] [2022-10-03 15:16:54,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:16:54,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:16:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:16:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 15:16:54,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:16:54,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080523706] [2022-10-03 15:16:54,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080523706] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:16:54,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:16:54,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 15:16:54,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832094545] [2022-10-03 15:16:54,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:16:54,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 15:16:54,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:16:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 15:16:54,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 15:16:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:16:54,753 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:16:54,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 216.5) internal successors, (433), 2 states have internal predecessors, (433), 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) [2022-10-03 15:16:54,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:16:54,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:16:54,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 15:16:55,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:16:55,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:16:55,000 INFO L85 PathProgramCache]: Analyzing trace with hash -877919424, now seen corresponding path program 1 times [2022-10-03 15:16:55,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:16:55,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026362319] [2022-10-03 15:16:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:16:55,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:16:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:16:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 15:16:58,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:16:58,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026362319] [2022-10-03 15:16:58,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026362319] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:16:58,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:16:58,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-10-03 15:16:58,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075142086] [2022-10-03 15:16:58,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:16:58,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-10-03 15:16:58,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:16:58,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-10-03 15:16:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=4213, Unknown=0, NotChecked=0, Total=4422 [2022-10-03 15:16:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:16:58,567 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:16:58,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 7.462686567164179) internal successors, (500), 67 states have internal predecessors, (500), 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) [2022-10-03 15:16:58,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:16:58,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:17:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:17:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-10-03 15:17:14,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 15:17:14,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:17:14,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:17:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash -191638647, now seen corresponding path program 1 times [2022-10-03 15:17:14,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:17:14,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464363274] [2022-10-03 15:17:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:17:14,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:17:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:17:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 15:17:16,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:17:16,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464363274] [2022-10-03 15:17:16,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464363274] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:17:16,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:17:16,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-10-03 15:17:16,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477003380] [2022-10-03 15:17:16,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:17:16,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-10-03 15:17:16,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:17:16,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-10-03 15:17:16,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=3474, Unknown=0, NotChecked=0, Total=3660 [2022-10-03 15:17:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:17:16,123 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:17:16,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 7.383333333333334) internal successors, (443), 61 states have internal predecessors, (443), 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) [2022-10-03 15:17:16,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:17:16,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 95 states. [2022-10-03 15:17:16,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:17:35,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:17:35,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-10-03 15:17:35,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-10-03 15:17:35,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-03 15:17:35,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:17:35,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:17:35,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1981495933, now seen corresponding path program 1 times [2022-10-03 15:17:35,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:17:35,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140695680] [2022-10-03 15:17:35,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:17:35,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:17:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:17:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21900 backedges. 1658 proven. 0 refuted. 0 times theorem prover too weak. 20242 trivial. 0 not checked. [2022-10-03 15:17:44,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:17:44,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140695680] [2022-10-03 15:17:44,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140695680] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:17:44,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:17:44,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-10-03 15:17:44,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568409517] [2022-10-03 15:17:44,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:17:44,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-10-03 15:17:44,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:17:44,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-10-03 15:17:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=5315, Unknown=0, NotChecked=0, Total=5550 [2022-10-03 15:17:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:17:44,801 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:17:44,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 17.30666666666667) internal successors, (1298), 75 states have internal predecessors, (1298), 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) [2022-10-03 15:17:44,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:17:44,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 102 states. [2022-10-03 15:17:44,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 99 states. [2022-10-03 15:17:44,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:18:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:18:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-10-03 15:18:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-10-03 15:18:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-10-03 15:18:07,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-03 15:18:07,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:18:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:18:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash 735739730, now seen corresponding path program 1 times [2022-10-03 15:18:07,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:18:07,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574059380] [2022-10-03 15:18:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:18:07,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:18:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:18:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11895 backedges. 8851 proven. 1027 refuted. 0 times theorem prover too weak. 2017 trivial. 0 not checked. [2022-10-03 15:18:12,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:18:12,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574059380] [2022-10-03 15:18:12,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574059380] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:18:12,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849390452] [2022-10-03 15:18:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:18:12,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:18:12,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:18:12,319 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) [2022-10-03 15:18:12,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-03 15:18:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:18:13,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 9352 conjuncts, 185 conjunts are in the unsatisfiable core [2022-10-03 15:18:13,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:18:16,811 INFO L356 Elim1Store]: treesize reduction 104, result has 14.0 percent of original size [2022-10-03 15:18:16,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 59 treesize of output 40 [2022-10-03 15:18:16,826 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-10-03 15:18:16,827 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 24 treesize of output 32 [2022-10-03 15:18:16,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-10-03 15:18:18,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2022-10-03 15:18:18,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 4 [2022-10-03 15:18:18,851 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 [2022-10-03 15:18:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11895 backedges. 3621 proven. 3 refuted. 0 times theorem prover too weak. 8271 trivial. 0 not checked. [2022-10-03 15:18:18,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 15:18:19,109 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 10 treesize of output 8 [2022-10-03 15:18:20,080 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (select (store |c_ULTIMATE.start_write~$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$_#value#1.base|)) |c_ULTIMATE.start_fifo_pop_~self#1.base|))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_fifo_pop_~self#1.offset|))) (or (= |c_ULTIMATE.start_fifo_pop_~self#1.base| .cse0) (and (forall ((v_ArrVal_1143 (Array Int Int))) (let ((.cse1 (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_write~$Pointer$_#ptr#1.base| v_ArrVal_1143) |c_ULTIMATE.start_fifo_pop_~self#1.base|))) (= (select .cse1 |c_ULTIMATE.start_fifo_pop_~self#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_fifo_pop_~self#1.offset| 4))))) (= .cse0 (select .cse2 (+ |c_ULTIMATE.start_fifo_pop_~self#1.offset| 4))))))) is different from false [2022-10-03 15:18:20,119 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base| (store (select |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base|) |c_ULTIMATE.start_fifo_pop_#t~mem40#1.offset| |c_ULTIMATE.start_fifo_pop_#t~mem41#1.base|)) |c_ULTIMATE.start_fifo_pop_~self#1.base|))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_fifo_pop_~self#1.offset|))) (or (and (= (select .cse0 (+ |c_ULTIMATE.start_fifo_pop_~self#1.offset| 4)) .cse1) (forall ((v_ArrVal_1143 (Array Int Int))) (let ((.cse2 (select (store |c_ULTIMATE.start_write~$Pointer$_old_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base| v_ArrVal_1143) |c_ULTIMATE.start_fifo_pop_~self#1.base|))) (= (select .cse2 (+ |c_ULTIMATE.start_fifo_pop_~self#1.offset| 4)) (select .cse2 |c_ULTIMATE.start_fifo_pop_~self#1.offset|))))) (= |c_ULTIMATE.start_fifo_pop_~self#1.base| .cse1)))) is different from false [2022-10-03 15:18:20,134 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base|) |c_ULTIMATE.start_fifo_pop_#t~mem40#1.offset| |c_ULTIMATE.start_fifo_pop_#t~mem41#1.base|)) |c_ULTIMATE.start_fifo_pop_~self#1.base|))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_fifo_pop_~self#1.offset|))) (or (and (forall ((v_ArrVal_1143 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base| v_ArrVal_1143) |c_ULTIMATE.start_fifo_pop_~self#1.base|))) (= (select .cse0 |c_ULTIMATE.start_fifo_pop_~self#1.offset|) (select .cse0 (+ |c_ULTIMATE.start_fifo_pop_~self#1.offset| 4))))) (= (select .cse1 (+ |c_ULTIMATE.start_fifo_pop_~self#1.offset| 4)) .cse2)) (= |c_ULTIMATE.start_fifo_pop_~self#1.base| .cse2)))) is different from false [2022-10-03 15:18:20,160 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base|) |c_ULTIMATE.start_fifo_pop_#t~mem40#1.offset| |c_ULTIMATE.start_read~$Pointer$_#value#1.base|)) |c_ULTIMATE.start_fifo_pop_~self#1.base|))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_fifo_pop_~self#1.offset|))) (or (and (forall ((v_ArrVal_1143 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base| v_ArrVal_1143) |c_ULTIMATE.start_fifo_pop_~self#1.base|))) (= (select .cse0 |c_ULTIMATE.start_fifo_pop_~self#1.offset|) (select .cse0 (+ |c_ULTIMATE.start_fifo_pop_~self#1.offset| 4))))) (= .cse1 (select .cse2 (+ |c_ULTIMATE.start_fifo_pop_~self#1.offset| 4)))) (= |c_ULTIMATE.start_fifo_pop_~self#1.base| .cse1)))) is different from false [2022-10-03 15:18:20,169 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base|) |c_ULTIMATE.start_fifo_pop_#t~mem40#1.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_read~$Pointer$_#ptr#1.base|) |c_ULTIMATE.start_read~$Pointer$_#ptr#1.offset|))) |c_ULTIMATE.start_fifo_pop_~self#1.base|))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_fifo_pop_~self#1.offset|))) (or (and (forall ((v_ArrVal_1143 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fifo_pop_#t~mem40#1.base| v_ArrVal_1143) |c_ULTIMATE.start_fifo_pop_~self#1.base|))) (= (select .cse0 |c_ULTIMATE.start_fifo_pop_~self#1.offset|) (select .cse0 (+ |c_ULTIMATE.start_fifo_pop_~self#1.offset| 4))))) (= (select .cse1 (+ |c_ULTIMATE.start_fifo_pop_~self#1.offset| 4)) .cse2)) (= |c_ULTIMATE.start_fifo_pop_~self#1.base| .cse2)))) is different from false [2022-10-03 15:18:21,385 INFO L356 Elim1Store]: treesize reduction 13, result has 79.0 percent of original size [2022-10-03 15:18:21,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 73 [2022-10-03 15:18:21,430 INFO L356 Elim1Store]: treesize reduction 13, result has 79.0 percent of original size [2022-10-03 15:18:21,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 60 [2022-10-03 15:18:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11895 backedges. 3622 proven. 0 refuted. 0 times theorem prover too weak. 8273 trivial. 0 not checked. [2022-10-03 15:18:21,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849390452] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-03 15:18:21,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-03 15:18:21,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [45, 54] total 128 [2022-10-03 15:18:21,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223425956] [2022-10-03 15:18:21,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:18:21,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-10-03 15:18:21,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:18:21,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-10-03 15:18:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=14315, Unknown=10, NotChecked=1230, Total=16256 [2022-10-03 15:18:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:18:21,809 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:18:21,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 44.111111111111114) internal successors, (1588), 36 states have internal predecessors, (1588), 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) [2022-10-03 15:18:21,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:18:21,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 102 states. [2022-10-03 15:18:21,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 99 states. [2022-10-03 15:18:21,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 120 states. [2022-10-03 15:18:21,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:18:30,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:18:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-10-03 15:18:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-10-03 15:18:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-10-03 15:18:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-10-03 15:18:30,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-03 15:18:30,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:18:30,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:18:30,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:18:30,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1417883132, now seen corresponding path program 1 times [2022-10-03 15:18:30,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:18:30,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102930478] [2022-10-03 15:18:30,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:18:30,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:18:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:18:38,228 INFO L134 CoverageAnalysis]: Checked inductivity of 14159 backedges. 1666 proven. 0 refuted. 0 times theorem prover too weak. 12493 trivial. 0 not checked. [2022-10-03 15:18:38,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:18:38,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102930478] [2022-10-03 15:18:38,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102930478] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:18:38,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:18:38,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-10-03 15:18:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651104957] [2022-10-03 15:18:38,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:18:38,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-10-03 15:18:38,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:18:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-10-03 15:18:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=6069, Unknown=0, NotChecked=0, Total=6320 [2022-10-03 15:18:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:18:38,240 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:18:38,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 16.7875) internal successors, (1343), 80 states have internal predecessors, (1343), 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) [2022-10-03 15:18:38,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:18:38,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 102 states. [2022-10-03 15:18:38,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 99 states. [2022-10-03 15:18:38,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 120 states. [2022-10-03 15:18:38,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2022-10-03 15:18:38,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:19:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:19:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-10-03 15:19:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-10-03 15:19:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-10-03 15:19:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-10-03 15:19:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-10-03 15:19:06,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-03 15:19:06,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:19:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:19:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash -993967096, now seen corresponding path program 1 times [2022-10-03 15:19:06,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:19:06,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995453724] [2022-10-03 15:19:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:19:06,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:19:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:19:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 24 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 15:19:10,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:19:10,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995453724] [2022-10-03 15:19:10,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995453724] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:19:10,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391275007] [2022-10-03 15:19:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:19:10,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:19:10,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:19:10,218 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) [2022-10-03 15:19:10,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-03 15:19:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:19:10,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 223 conjunts are in the unsatisfiable core [2022-10-03 15:19:10,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:19:11,927 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 11 treesize of output 7 [2022-10-03 15:19:11,937 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 11 treesize of output 7 [2022-10-03 15:19:14,919 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-03 15:19:14,921 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 [2022-10-03 15:19:15,591 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-10-03 15:19:15,592 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 74 treesize of output 70 [2022-10-03 15:19:15,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:19:15,600 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-10-03 15:19:15,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 63 [2022-10-03 15:19:18,468 INFO L356 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2022-10-03 15:19:18,468 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 78 [2022-10-03 15:19:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-10-03 15:19:19,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 15:19:19,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391275007] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:19:19,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 15:19:19,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [87] total 149 [2022-10-03 15:19:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897132401] [2022-10-03 15:19:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:19:19,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-10-03 15:19:19,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:19:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-10-03 15:19:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=21528, Unknown=0, NotChecked=0, Total=22052 [2022-10-03 15:19:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:19:19,228 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:19:19,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 11.75) internal successors, (752), 64 states have internal predecessors, (752), 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) [2022-10-03 15:19:19,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:19:19,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 106 states. [2022-10-03 15:19:19,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 100 states. [2022-10-03 15:19:19,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 124 states. [2022-10-03 15:19:19,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2022-10-03 15:19:19,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 133 states. [2022-10-03 15:19:19,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:20:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:20:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-10-03 15:20:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-10-03 15:20:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-10-03 15:20:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-10-03 15:20:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-10-03 15:20:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-10-03 15:20:05,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-03 15:20:05,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:20:05,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:20:05,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:20:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1406648008, now seen corresponding path program 1 times [2022-10-03 15:20:05,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:20:05,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388742962] [2022-10-03 15:20:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:20:05,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:20:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:20:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 36 proven. 390 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-03 15:20:15,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:20:15,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388742962] [2022-10-03 15:20:15,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388742962] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:20:15,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520966015] [2022-10-03 15:20:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:20:15,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:20:15,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:20:15,650 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) [2022-10-03 15:20:15,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-03 15:20:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:20:16,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 391 conjunts are in the unsatisfiable core [2022-10-03 15:20:16,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:20:16,266 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 [2022-10-03 15:20:17,334 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 11 treesize of output 7 [2022-10-03 15:20:18,277 INFO L356 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2022-10-03 15:20:18,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 41 [2022-10-03 15:20:18,910 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-10-03 15:20:26,461 INFO L356 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2022-10-03 15:20:26,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 29 [2022-10-03 15:20:27,782 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-10-03 15:20:28,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-10-03 15:20:28,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-03 15:20:29,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2022-10-03 15:20:29,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-10-03 15:20:32,066 INFO L356 Elim1Store]: treesize reduction 92, result has 34.8 percent of original size [2022-10-03 15:20:32,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 80 treesize of output 83 [2022-10-03 15:20:32,102 INFO L356 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-10-03 15:20:32,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 42 [2022-10-03 15:20:34,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 85 [2022-10-03 15:20:34,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 84 [2022-10-03 15:20:37,103 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-03 15:20:37,104 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 52 treesize of output 63 [2022-10-03 15:20:37,133 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-03 15:20:37,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 44 [2022-10-03 15:20:37,227 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 6 treesize of output 4 [2022-10-03 15:20:37,277 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 5 treesize of output 3 [2022-10-03 15:20:37,295 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 7 treesize of output 5 [2022-10-03 15:20:38,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 59 [2022-10-03 15:20:38,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 82 [2022-10-03 15:20:54,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:20:54,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:20:54,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-03 15:20:54,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:20:54,161 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-10-03 15:20:54,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 101 treesize of output 62 [2022-10-03 15:20:54,187 INFO L356 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2022-10-03 15:20:54,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 44 [2022-10-03 15:20:54,846 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 11 treesize of output 7 [2022-10-03 15:20:54,848 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 11 treesize of output 7 [2022-10-03 15:20:55,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-03 15:20:55,334 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-03 15:20:55,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-03 15:20:55,341 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 15:20:55,341 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 15 treesize of output 10 [2022-10-03 15:20:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 32 proven. 358 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-10-03 15:20:55,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 15:20:56,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 24 [2022-10-03 15:20:56,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:20:56,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:21:49,288 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 130 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-03 15:22:36,642 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-03 15:23:49,147 WARN L233 SmtUtils]: Spent 7.79s on a formula simplification that was a NOOP. DAG size: 137 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-03 15:24:16,292 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification that was a NOOP. DAG size: 137 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-03 15:24:47,411 WARN L233 SmtUtils]: Spent 30.87s on a formula simplification. DAG size of input: 168 DAG size of output: 123 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-10-03 15:24:47,411 INFO L356 Elim1Store]: treesize reduction 558, result has 44.4 percent of original size [2022-10-03 15:24:47,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 12 case distinctions, treesize of input 13022 treesize of output 5955 [2022-10-03 15:25:19,349 WARN L233 SmtUtils]: Spent 31.85s on a formula simplification. DAG size of input: 222 DAG size of output: 119 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-10-03 15:25:19,349 INFO L356 Elim1Store]: treesize reduction 10263, result has 22.7 percent of original size [2022-10-03 15:25:19,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 29 case distinctions, treesize of input 54599 treesize of output 51090 [2022-10-03 15:25:19,693 INFO L244 Elim1Store]: Index analysis took 195 ms [2022-10-03 15:25:26,130 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-10-03 15:25:26,130 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 15:25:26,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 48566 treesize of output 48324