/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/ring_2w1r-2.line881.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-04 03:06:09,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-04 03:06:09,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-04 03:06:09,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-04 03:06:09,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-04 03:06:09,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-04 03:06:09,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-04 03:06:09,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-04 03:06:09,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-04 03:06:09,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-04 03:06:09,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-04 03:06:09,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-04 03:06:09,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-04 03:06:09,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-04 03:06:09,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-04 03:06:09,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-04 03:06:09,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-04 03:06:09,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-04 03:06:09,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-04 03:06:09,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-04 03:06:09,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-04 03:06:09,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-04 03:06:09,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-04 03:06:09,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-04 03:06:09,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-04 03:06:09,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-04 03:06:09,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-04 03:06:09,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-04 03:06:09,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-04 03:06:09,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-04 03:06:09,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-04 03:06:09,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-04 03:06:09,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-04 03:06:09,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-04 03:06:09,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-04 03:06:09,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-04 03:06:09,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-04 03:06:09,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-04 03:06:09,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-04 03:06:09,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-04 03:06:09,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-04 03:06:09,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-04 03:06:09,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-04 03:06:09,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-04 03:06:09,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-04 03:06:09,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-04 03:06:09,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-04 03:06:09,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-04 03:06:09,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-04 03:06:09,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-04 03:06:09,137 INFO L138 SettingsManager]: * Use SBE=true [2022-10-04 03:06:09,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-04 03:06:09,137 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-04 03:06:09,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-04 03:06:09,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-04 03:06:09,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-04 03:06:09,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-04 03:06:09,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-04 03:06:09,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-04 03:06:09,138 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-04 03:06:09,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-04 03:06:09,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-04 03:06:09,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-04 03:06:09,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-04 03:06:09,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-04 03:06:09,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-04 03:06:09,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-04 03:06:09,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 03:06:09,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-04 03:06:09,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-04 03:06:09,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-04 03:06:09,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-04 03:06:09,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-04 03:06:09,140 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-04 03:06:09,140 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-04 03:06:09,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-04 03:06:09,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-04 03:06:09,141 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-04 03:06:09,141 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-04 03:06:09,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-04 03:06:09,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-04 03:06:09,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-04 03:06:09,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-04 03:06:09,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-04 03:06:09,352 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-04 03:06:09,353 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-04 03:06:09,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line881.bpl [2022-10-04 03:06:09,354 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line881.bpl' [2022-10-04 03:06:09,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-04 03:06:09,402 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-04 03:06:09,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-04 03:06:09,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-04 03:06:09,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-04 03:06:09,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:06:09" (1/1) ... [2022-10-04 03:06:09,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:06:09" (1/1) ... [2022-10-04 03:06:09,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:06:09" (1/1) ... [2022-10-04 03:06:09,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:06:09" (1/1) ... [2022-10-04 03:06:09,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:06:09" (1/1) ... [2022-10-04 03:06:09,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:06:09" (1/1) ... [2022-10-04 03:06:09,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:06:09" (1/1) ... [2022-10-04 03:06:09,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-04 03:06:09,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-04 03:06:09,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-04 03:06:09,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-04 03:06:09,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:06:09" (1/1) ... [2022-10-04 03:06:09,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 03:06:09,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 03:06:09,517 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) [2022-10-04 03:06:09,525 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 [2022-10-04 03:06:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-10-04 03:06:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-10-04 03:06:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-10-04 03:06:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-10-04 03:06:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-04 03:06:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-04 03:06:09,568 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-04 03:06:09,662 INFO L234 CfgBuilder]: Building ICFG [2022-10-04 03:06:09,671 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-04 03:06:10,174 INFO L275 CfgBuilder]: Performing block encoding [2022-10-04 03:06:10,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-04 03:06:10,192 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-04 03:06:10,200 INFO L202 PluginConnector]: Adding new model ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 03:06:10 BoogieIcfgContainer [2022-10-04 03:06:10,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-04 03:06:10,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-04 03:06:10,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-04 03:06:10,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-04 03:06:10,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:06:09" (1/2) ... [2022-10-04 03:06:10,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b3e829 and model type ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 03:06:10, skipping insertion in model container [2022-10-04 03:06:10,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-2.line881.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 03:06:10" (2/2) ... [2022-10-04 03:06:10,212 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.line881.bpl [2022-10-04 03:06:10,225 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-04 03:06:10,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-04 03:06:10,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-04 03:06:10,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-04 03:06:10,368 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-04 03:06:10,420 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 03:06:10,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 03:06:10,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 03:06:10,423 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) [2022-10-04 03:06:10,438 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 [2022-10-04 03:06:10,461 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 03:06:10,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-04 03:06:10,471 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;@40c4f89c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 03:06:10,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 03:06:10,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 03:06:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 03:06:10,675 INFO L85 PathProgramCache]: Analyzing trace with hash -371325161, now seen corresponding path program 1 times [2022-10-04 03:06:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 03:06:10,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916997666] [2022-10-04 03:06:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:06:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 03:06:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:06:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 03:06:10,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 03:06:10,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916997666] [2022-10-04 03:06:10,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916997666] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 03:06:10,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 03:06:10,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 03:06:10,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818129003] [2022-10-04 03:06:10,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 03:06:11,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 03:06:11,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 03:06:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 03:06:11,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 03:06:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:11,022 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 03:06:11,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 91.5) internal successors, (183), 2 states have internal predecessors, (183), 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) [2022-10-04 03:06:11,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:11,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-04 03:06:11,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 03:06:11,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 03:06:11,063 INFO L85 PathProgramCache]: Analyzing trace with hash -743078124, now seen corresponding path program 1 times [2022-10-04 03:06:11,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 03:06:11,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286008450] [2022-10-04 03:06:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:06:11,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 03:06:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:06:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 03:06:11,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 03:06:11,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286008450] [2022-10-04 03:06:11,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286008450] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 03:06:11,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 03:06:11,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-04 03:06:11,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421538755] [2022-10-04 03:06:11,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 03:06:11,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-04 03:06:11,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 03:06:11,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-04 03:06:11,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-04 03:06:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:11,399 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 03:06:11,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 22.333333333333332) internal successors, (201), 10 states have internal predecessors, (201), 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) [2022-10-04 03:06:11,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:11,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-04 03:06:19,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-04 03:06:19,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 03:06:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 03:06:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1306098139, now seen corresponding path program 1 times [2022-10-04 03:06:19,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 03:06:19,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015055086] [2022-10-04 03:06:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:06:19,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 03:06:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:06:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 03:06:19,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 03:06:19,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015055086] [2022-10-04 03:06:19,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015055086] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 03:06:19,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 03:06:19,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-04 03:06:19,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449935937] [2022-10-04 03:06:19,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 03:06:19,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-04 03:06:19,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 03:06:19,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-04 03:06:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-04 03:06:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:19,228 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 03:06:19,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2022-10-04 03:06:19,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:19,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-10-04 03:06:19,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:26,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:26,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-04 03:06:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 03:06:26,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-04 03:06:26,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 03:06:26,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 03:06:26,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1603968078, now seen corresponding path program 1 times [2022-10-04 03:06:26,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 03:06:26,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792712956] [2022-10-04 03:06:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:06:26,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 03:06:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:06:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 03:06:26,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 03:06:26,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792712956] [2022-10-04 03:06:26,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792712956] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 03:06:26,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086150477] [2022-10-04 03:06:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:06:26,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 03:06:26,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 03:06:26,765 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) [2022-10-04 03:06:26,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-04 03:06:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:06:26,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-04 03:06:26,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 03:06:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-04 03:06:27,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 03:06:27,223 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-10-04 03:06:27,225 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 12 treesize of output 11 [2022-10-04 03:06:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-04 03:06:27,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086150477] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-04 03:06:27,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-04 03:06:27,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15, 6] total 18 [2022-10-04 03:06:27,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817113709] [2022-10-04 03:06:27,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 03:06:27,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-04 03:06:27,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 03:06:27,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-04 03:06:27,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2022-10-04 03:06:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:27,255 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 03:06:27,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 94.5) internal successors, (378), 5 states have internal predecessors, (378), 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) [2022-10-04 03:06:27,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:27,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-10-04 03:06:27,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 03:06:27,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-04 03:06:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 03:06:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-04 03:06:51,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-04 03:06:51,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-04 03:06:51,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 03:06:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 03:06:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash -603268766, now seen corresponding path program 1 times [2022-10-04 03:06:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 03:06:51,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433205913] [2022-10-04 03:06:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:06:51,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 03:06:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:06:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3470 backedges. 1709 proven. 0 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2022-10-04 03:06:52,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 03:06:52,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433205913] [2022-10-04 03:06:52,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433205913] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 03:06:52,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 03:06:52,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-04 03:06:52,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427998652] [2022-10-04 03:06:52,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 03:06:52,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-04 03:06:52,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 03:06:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-04 03:06:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-04 03:06:52,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:52,237 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 03:06:52,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 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) [2022-10-04 03:06:52,238 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:06:52,238 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-10-04 03:06:52,238 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 03:06:52,238 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-10-04 03:06:52,238 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:07:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:07:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-04 03:07:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 03:07:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-04 03:07:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-04 03:07:15,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-04 03:07:15,294 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 03:07:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 03:07:15,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2086575694, now seen corresponding path program 1 times [2022-10-04 03:07:15,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 03:07:15,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905334104] [2022-10-04 03:07:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:07:15,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 03:07:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:07:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 1715 proven. 2 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked. [2022-10-04 03:07:15,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 03:07:15,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905334104] [2022-10-04 03:07:15,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905334104] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 03:07:15,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769788080] [2022-10-04 03:07:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:07:15,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 03:07:15,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 03:07:15,929 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) [2022-10-04 03:07:15,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-04 03:07:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:07:16,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-04 03:07:16,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 03:07:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 1715 proven. 2 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked. [2022-10-04 03:07:16,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 03:07:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 1715 proven. 2 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked. [2022-10-04 03:07:17,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769788080] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 03:07:17,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 03:07:17,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-04 03:07:17,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670033850] [2022-10-04 03:07:17,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 03:07:17,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-04 03:07:17,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 03:07:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-04 03:07:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-04 03:07:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:07:17,012 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 03:07:17,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 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) [2022-10-04 03:07:17,012 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:07:17,012 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-10-04 03:07:17,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 03:07:17,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-10-04 03:07:17,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-04 03:07:17,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:08:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:08:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-04 03:08:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 03:08:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-04 03:08:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-04 03:08:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-04 03:08:51,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-04 03:08:52,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 03:08:52,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 03:08:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 03:08:52,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1639387113, now seen corresponding path program 1 times [2022-10-04 03:08:52,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 03:08:52,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690764334] [2022-10-04 03:08:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:08:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 03:08:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:08:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 344 proven. 1508 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-10-04 03:08:52,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 03:08:52,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690764334] [2022-10-04 03:08:52,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690764334] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 03:08:52,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925224927] [2022-10-04 03:08:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:08:52,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 03:08:52,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 03:08:52,979 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) [2022-10-04 03:08:53,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-04 03:08:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:08:53,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-04 03:08:53,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 03:08:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 344 proven. 1508 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-10-04 03:08:54,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 03:08:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 344 proven. 1508 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-10-04 03:08:55,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925224927] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 03:08:55,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 03:08:55,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-10-04 03:08:55,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696732400] [2022-10-04 03:08:55,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 03:08:55,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-04 03:08:55,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 03:08:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-04 03:08:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-04 03:08:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:08:55,319 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 03:08:55,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 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) [2022-10-04 03:08:55,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:08:55,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-10-04 03:08:55,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 03:08:55,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-10-04 03:08:55,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-04 03:08:55,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-04 03:08:55,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.