/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.line1314.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 15:22:21,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 15:22:21,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 15:22:21,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 15:22:21,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 15:22:21,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 15:22:21,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 15:22:21,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 15:22:21,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 15:22:21,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 15:22:21,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 15:22:21,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 15:22:21,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 15:22:21,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 15:22:21,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 15:22:21,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 15:22:21,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 15:22:21,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 15:22:21,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 15:22:21,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 15:22:21,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 15:22:21,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 15:22:21,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 15:22:21,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 15:22:21,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 15:22:21,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 15:22:21,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 15:22:21,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 15:22:21,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 15:22:21,229 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 15:22:21,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 15:22:21,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 15:22:21,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 15:22:21,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 15:22:21,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 15:22:21,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 15:22:21,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 15:22:21,232 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 15:22:21,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 15:22:21,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 15:22:21,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 15:22:21,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 15:22:21,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 15:22:21,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 15:22:21,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 15:22:21,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 15:22:21,233 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 15:22:21,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 15:22:21,234 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 15:22:21,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 15:22:21,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 15:22:21,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 15:22:21,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 15:22:21,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 15:22:21,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:22:21,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 15:22:21,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 15:22:21,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 15:22:21,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 15:22:21,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 15:22:21,236 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 15:22:21,236 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 15:22:21,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 15:22:21,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 15:22:21,237 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 15:22:21,237 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 15:22:21,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 15:22:21,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 15:22:21,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 15:22:21,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 15:22:21,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 15:22:21,440 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 15:22:21,441 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 15:22:21,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1314.bpl [2022-10-03 15:22:21,442 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1314.bpl' [2022-10-03 15:22:21,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 15:22:21,526 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 15:22:21,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 15:22:21,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 15:22:21,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 15:22:21,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:22:21" (1/1) ... [2022-10-03 15:22:21,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:22:21" (1/1) ... [2022-10-03 15:22:21,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:22:21" (1/1) ... [2022-10-03 15:22:21,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:22:21" (1/1) ... [2022-10-03 15:22:21,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:22:21" (1/1) ... [2022-10-03 15:22:21,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:22:21" (1/1) ... [2022-10-03 15:22:21,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:22:21" (1/1) ... [2022-10-03 15:22:21,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 15:22:21,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 15:22:21,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 15:22:21,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 15:22:21,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:22:21" (1/1) ... [2022-10-03 15:22:21,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:22:21,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:22:21,728 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 15:22:21,752 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 15:22:21,769 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 15:22:21,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 15:22:21,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 15:22:21,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 15:22:21,772 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 15:22:21,966 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 15:22:21,968 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 15:22:23,098 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 15:22:23,128 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 15:22:23,128 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 15:22:23,131 INFO L202 PluginConnector]: Adding new model divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:22:23 BoogieIcfgContainer [2022-10-03 15:22:23,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 15:22:23,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 15:22:23,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 15:22:23,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 15:22:23,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:22:21" (1/2) ... [2022-10-03 15:22:23,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5879376e and model type divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:22:23, skipping insertion in model container [2022-10-03 15:22:23,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1314.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:22:23" (2/2) ... [2022-10-03 15:22:23,139 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.line1314.bpl [2022-10-03 15:22:23,145 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 15:22:23,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 15:22:23,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 15:22:23,156 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 15:22:23,328 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 15:22:23,394 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 15:22:23,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 15:22:23,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:22:23,399 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 15:22:23,419 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 15:22:23,438 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 15:22:23,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 15:22:23,460 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;@16892865, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 15:22:23,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 15:22:23,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:22:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:22:23,832 INFO L85 PathProgramCache]: Analyzing trace with hash 375308885, now seen corresponding path program 1 times [2022-10-03 15:22:23,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:22:23,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696231379] [2022-10-03 15:22:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:22:23,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:22:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:22:24,387 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 15:22:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:22:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696231379] [2022-10-03 15:22:24,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696231379] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:22:24,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:22:24,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 15:22:24,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736237801] [2022-10-03 15:22:24,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:22:24,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 15:22:24,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:22:24,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 15:22:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 15:22:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:24,431 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:22:24,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 258.5) internal successors, (517), 2 states have internal predecessors, (517), 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 15:22:24,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:24,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 15:22:24,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:22:24,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:22:24,650 INFO L85 PathProgramCache]: Analyzing trace with hash -398276630, now seen corresponding path program 1 times [2022-10-03 15:22:24,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:22:24,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754388049] [2022-10-03 15:22:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:22:24,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:22:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:22:25,072 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 15:22:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:22:25,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754388049] [2022-10-03 15:22:25,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754388049] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:22:25,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:22:25,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-03 15:22:25,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743179397] [2022-10-03 15:22:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:22:25,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-03 15:22:25,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:22:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-03 15:22:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-03 15:22:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:25,076 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:22:25,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 64.77777777777777) internal successors, (583), 10 states have internal predecessors, (583), 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 15:22:25,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:25,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-03 15:22:26,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 15:22:26,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:22:26,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:22:26,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1929872848, now seen corresponding path program 1 times [2022-10-03 15:22:26,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:22:26,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895652342] [2022-10-03 15:22:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:22:26,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:22:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:22:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-03 15:22:26,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:22:26,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895652342] [2022-10-03 15:22:26,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895652342] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:22:26,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:22:26,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-03 15:22:26,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589276066] [2022-10-03 15:22:26,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:22:26,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-03 15:22:26,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:22:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-03 15:22:26,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-03 15:22:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:26,485 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:22:26,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 124.0) internal successors, (868), 8 states have internal predecessors, (868), 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 15:22:26,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:26,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-10-03 15:22:26,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-03 15:22:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-03 15:22:32,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-03 15:22:32,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:22:32,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:22:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1820434512, now seen corresponding path program 1 times [2022-10-03 15:22:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:22:32,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978575601] [2022-10-03 15:22:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:22:32,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:22:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:23:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 189481 backedges. 146440 proven. 33541 refuted. 0 times theorem prover too weak. 9500 trivial. 0 not checked. [2022-10-03 15:23:13,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:23:13,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978575601] [2022-10-03 15:23:13,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978575601] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:23:13,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616120611] [2022-10-03 15:23:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:23:13,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:23:13,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:23:13,155 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 15:23:13,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process