/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem11_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:16:36,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:16:36,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:16:36,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:16:36,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:16:36,247 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:16:36,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:16:36,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:16:36,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:16:36,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:16:36,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:16:36,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:16:36,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:16:36,250 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:16:36,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:16:36,251 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:16:36,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:16:36,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:16:36,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:16:36,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:16:36,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:16:36,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:16:36,252 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:16:36,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:16:36,252 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:16:36,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:16:36,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:16:36,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:16:36,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:16:36,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:16:36,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:16:36,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:16:36,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:16:36,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:16:36,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:16:36,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:16:36,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:16:36,254 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:16:36,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:16:36,255 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:16:36,255 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:16:36,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:16:36,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:16:36,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:16:36,512 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:16:36,512 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:16:36,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label28.c [2023-03-30 23:16:37,686 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:16:38,038 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:16:38,039 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label28.c [2023-03-30 23:16:38,050 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30f17015/a1158c81ba0848b984c2810fddcbf9fb/FLAG20843ed12 [2023-03-30 23:16:38,067 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30f17015/a1158c81ba0848b984c2810fddcbf9fb [2023-03-30 23:16:38,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:16:38,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:16:38,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:16:38,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:16:38,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:16:38,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:38,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3feb150b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38, skipping insertion in model container [2023-03-30 23:16:38,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:38,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:16:38,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:16:38,344 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label28.c[6999,7012] [2023-03-30 23:16:38,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:16:38,668 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:16:38,711 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label28.c[6999,7012] [2023-03-30 23:16:38,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:16:38,822 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:16:38,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38 WrapperNode [2023-03-30 23:16:38,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:16:38,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:16:38,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:16:38,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:16:38,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:38,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:38,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:38,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:38,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:38,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:38,975 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:38,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:38,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:16:38,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:16:38,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:16:38,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:16:38,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38" (1/1) ... [2023-03-30 23:16:39,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:16:39,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:39,027 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) [2023-03-30 23:16:39,049 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 [2023-03-30 23:16:39,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:16:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:16:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:16:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:16:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:16:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:16:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:16:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:16:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:16:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:16:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:16:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:16:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:16:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:16:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:16:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:16:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:16:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:16:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:16:39,150 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:16:39,152 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:16:40,451 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:16:40,461 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:16:40,461 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:16:40,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:16:40 BoogieIcfgContainer [2023-03-30 23:16:40,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:16:40,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:16:40,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:16:40,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:16:40,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:16:38" (1/3) ... [2023-03-30 23:16:40,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9c9ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:16:40, skipping insertion in model container [2023-03-30 23:16:40,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:38" (2/3) ... [2023-03-30 23:16:40,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9c9ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:16:40, skipping insertion in model container [2023-03-30 23:16:40,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:16:40" (3/3) ... [2023-03-30 23:16:40,471 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label28.c [2023-03-30 23:16:40,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:16:40,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:16:40,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:16:40,565 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=PETRI_NET, 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;@264a1691, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:16:40,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:16:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 292 states, 284 states have (on average 1.7077464788732395) internal successors, (485), 285 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:16:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-30 23:16:40,582 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:40,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:40,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:40,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1128879577, now seen corresponding path program 1 times [2023-03-30 23:16:40,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:40,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410896468] [2023-03-30 23:16:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:40,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:41,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:41,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410896468] [2023-03-30 23:16:41,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410896468] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:41,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:16:41,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:16:41,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325349624] [2023-03-30 23:16:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:41,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:16:41,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:41,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:16:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:16:41,205 INFO L87 Difference]: Start difference. First operand has 292 states, 284 states have (on average 1.7077464788732395) internal successors, (485), 285 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:16:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:43,442 INFO L93 Difference]: Finished difference Result 998 states and 1793 transitions. [2023-03-30 23:16:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:16:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-03-30 23:16:43,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:43,468 INFO L225 Difference]: With dead ends: 998 [2023-03-30 23:16:43,468 INFO L226 Difference]: Without dead ends: 638 [2023-03-30 23:16:43,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:16:43,477 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 904 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:43,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 80 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-30 23:16:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-03-30 23:16:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 621. [2023-03-30 23:16:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 608 states have (on average 1.53125) internal successors, (931), 611 states have internal predecessors, (931), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-03-30 23:16:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 950 transitions. [2023-03-30 23:16:43,575 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 950 transitions. Word has length 54 [2023-03-30 23:16:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:43,576 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 950 transitions. [2023-03-30 23:16:43,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:16:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 950 transitions. [2023-03-30 23:16:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-03-30 23:16:43,592 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:43,592 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:43,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:16:43,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:43,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1501789624, now seen corresponding path program 1 times [2023-03-30 23:16:43,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:43,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524960707] [2023-03-30 23:16:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:43,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:43,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:43,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:44,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:44,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524960707] [2023-03-30 23:16:44,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524960707] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:44,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:16:44,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:16:44,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459971100] [2023-03-30 23:16:44,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:44,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:16:44,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:44,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:16:44,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:16:44,061 INFO L87 Difference]: Start difference. First operand 621 states and 950 transitions. Second operand has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:45,431 INFO L93 Difference]: Finished difference Result 1842 states and 2898 transitions. [2023-03-30 23:16:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:16:45,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 124 [2023-03-30 23:16:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:45,438 INFO L225 Difference]: With dead ends: 1842 [2023-03-30 23:16:45,438 INFO L226 Difference]: Without dead ends: 1227 [2023-03-30 23:16:45,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:16:45,441 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1185 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:45,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 120 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-30 23:16:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2023-03-30 23:16:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1203. [2023-03-30 23:16:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1175 states have (on average 1.3753191489361702) internal successors, (1616), 1187 states have internal predecessors, (1616), 8 states have call successors, (8), 8 states have call predecessors, (8), 19 states have return successors, (55), 7 states have call predecessors, (55), 7 states have call successors, (55) [2023-03-30 23:16:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1679 transitions. [2023-03-30 23:16:45,509 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1679 transitions. Word has length 124 [2023-03-30 23:16:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:45,516 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1679 transitions. [2023-03-30 23:16:45,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:45,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1679 transitions. [2023-03-30 23:16:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-03-30 23:16:45,520 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:45,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:45,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:16:45,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:45,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1972964164, now seen corresponding path program 1 times [2023-03-30 23:16:45,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:45,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108697021] [2023-03-30 23:16:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:45,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:45,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:45,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108697021] [2023-03-30 23:16:45,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108697021] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:45,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:16:45,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:16:45,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575680951] [2023-03-30 23:16:45,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:45,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:16:45,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:16:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:16:45,939 INFO L87 Difference]: Start difference. First operand 1203 states and 1679 transitions. Second operand has 7 states, 6 states have (on average 21.333333333333332) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:47,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:47,482 INFO L93 Difference]: Finished difference Result 3427 states and 4865 transitions. [2023-03-30 23:16:47,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:16:47,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.333333333333332) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 134 [2023-03-30 23:16:47,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:47,491 INFO L225 Difference]: With dead ends: 3427 [2023-03-30 23:16:47,492 INFO L226 Difference]: Without dead ends: 2230 [2023-03-30 23:16:47,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:16:47,496 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1062 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:47,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 154 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 23:16:47,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2023-03-30 23:16:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2002. [2023-03-30 23:16:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1946 states have (on average 1.2826310380267214) internal successors, (2496), 1978 states have internal predecessors, (2496), 12 states have call successors, (12), 12 states have call predecessors, (12), 43 states have return successors, (150), 11 states have call predecessors, (150), 11 states have call successors, (150) [2023-03-30 23:16:47,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2658 transitions. [2023-03-30 23:16:47,559 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2658 transitions. Word has length 134 [2023-03-30 23:16:47,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:47,560 INFO L495 AbstractCegarLoop]: Abstraction has 2002 states and 2658 transitions. [2023-03-30 23:16:47,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.333333333333332) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2658 transitions. [2023-03-30 23:16:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-03-30 23:16:47,562 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:47,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:47,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:16:47,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:47,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2061172961, now seen corresponding path program 1 times [2023-03-30 23:16:47,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:47,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966127857] [2023-03-30 23:16:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:47,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:47,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:47,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:48,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:48,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966127857] [2023-03-30 23:16:48,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966127857] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:48,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392554615] [2023-03-30 23:16:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:48,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:48,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:48,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:16:48,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:16:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:48,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:16:48,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:49,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:16:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392554615] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:49,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:16:49,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-03-30 23:16:49,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488631886] [2023-03-30 23:16:49,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:49,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:16:49,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:49,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:16:49,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:16:49,037 INFO L87 Difference]: Start difference. First operand 2002 states and 2658 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:50,046 INFO L93 Difference]: Finished difference Result 4439 states and 5895 transitions. [2023-03-30 23:16:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:16:50,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 164 [2023-03-30 23:16:50,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:50,057 INFO L225 Difference]: With dead ends: 4439 [2023-03-30 23:16:50,057 INFO L226 Difference]: Without dead ends: 2443 [2023-03-30 23:16:50,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:16:50,064 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 420 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:50,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 126 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-30 23:16:50,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2023-03-30 23:16:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2392. [2023-03-30 23:16:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 2325 states have (on average 1.2443010752688173) internal successors, (2893), 2364 states have internal predecessors, (2893), 14 states have call successors, (14), 14 states have call predecessors, (14), 52 states have return successors, (183), 13 states have call predecessors, (183), 13 states have call successors, (183) [2023-03-30 23:16:50,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3090 transitions. [2023-03-30 23:16:50,134 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3090 transitions. Word has length 164 [2023-03-30 23:16:50,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:50,137 INFO L495 AbstractCegarLoop]: Abstraction has 2392 states and 3090 transitions. [2023-03-30 23:16:50,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3090 transitions. [2023-03-30 23:16:50,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-03-30 23:16:50,141 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:50,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:50,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:50,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:50,347 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:50,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:50,348 INFO L85 PathProgramCache]: Analyzing trace with hash 188211481, now seen corresponding path program 1 times [2023-03-30 23:16:50,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:50,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115619361] [2023-03-30 23:16:50,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:50,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:50,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:50,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:16:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-03-30 23:16:51,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115619361] [2023-03-30 23:16:51,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115619361] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:51,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748540049] [2023-03-30 23:16:51,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:51,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:51,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:51,144 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) [2023-03-30 23:16:51,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:16:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:51,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:16:51,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:51,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:16:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:51,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748540049] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:16:51,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:16:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-03-30 23:16:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202626985] [2023-03-30 23:16:51,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:16:51,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-30 23:16:51,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:51,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-30 23:16:51,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:16:51,868 INFO L87 Difference]: Start difference. First operand 2392 states and 3090 transitions. Second operand has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 11 states have internal predecessors, (487), 6 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:16:57,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:57,558 INFO L93 Difference]: Finished difference Result 8840 states and 12080 transitions. [2023-03-30 23:16:57,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-03-30 23:16:57,559 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 11 states have internal predecessors, (487), 6 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 250 [2023-03-30 23:16:57,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:57,591 INFO L225 Difference]: With dead ends: 8840 [2023-03-30 23:16:57,591 INFO L226 Difference]: Without dead ends: 6066 [2023-03-30 23:16:57,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 519 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=735, Invalid=3957, Unknown=0, NotChecked=0, Total=4692 [2023-03-30 23:16:57,604 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 3500 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 5577 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3500 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 6166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 5577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:57,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3500 Valid, 394 Invalid, 6166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 5577 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-03-30 23:16:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2023-03-30 23:16:57,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 5559. [2023-03-30 23:16:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5559 states, 5389 states have (on average 1.177212840972351) internal successors, (6344), 5499 states have internal predecessors, (6344), 30 states have call successors, (30), 30 states have call predecessors, (30), 139 states have return successors, (570), 29 states have call predecessors, (570), 29 states have call successors, (570) [2023-03-30 23:16:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 6944 transitions. [2023-03-30 23:16:57,807 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 6944 transitions. Word has length 250 [2023-03-30 23:16:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:57,808 INFO L495 AbstractCegarLoop]: Abstraction has 5559 states and 6944 transitions. [2023-03-30 23:16:57,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 11 states have internal predecessors, (487), 6 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:16:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 6944 transitions. [2023-03-30 23:16:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-03-30 23:16:57,813 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:57,814 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:57,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:58,020 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 [2023-03-30 23:16:58,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:58,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1102631, now seen corresponding path program 1 times [2023-03-30 23:16:58,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:58,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774389757] [2023-03-30 23:16:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:58,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:58,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:58,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-30 23:16:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-03-30 23:16:58,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:58,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774389757] [2023-03-30 23:16:58,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774389757] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:58,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100113899] [2023-03-30 23:16:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:58,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:58,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:58,430 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) [2023-03-30 23:16:58,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:16:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:58,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-30 23:16:58,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:58,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:16:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:59,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100113899] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:16:59,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:16:59,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-03-30 23:16:59,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401065059] [2023-03-30 23:16:59,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:16:59,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-30 23:16:59,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:59,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-30 23:16:59,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:16:59,501 INFO L87 Difference]: Start difference. First operand 5559 states and 6944 transitions. Second operand has 10 states, 10 states have (on average 37.2) internal successors, (372), 8 states have internal predecessors, (372), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-30 23:17:02,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:02,190 INFO L93 Difference]: Finished difference Result 12558 states and 15719 transitions. [2023-03-30 23:17:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-03-30 23:17:02,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 37.2) internal successors, (372), 8 states have internal predecessors, (372), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 255 [2023-03-30 23:17:02,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:02,231 INFO L225 Difference]: With dead ends: 12558 [2023-03-30 23:17:02,231 INFO L226 Difference]: Without dead ends: 7005 [2023-03-30 23:17:02,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2023-03-30 23:17:02,244 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1768 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:02,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1768 Valid, 218 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-30 23:17:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2023-03-30 23:17:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 6585. [2023-03-30 23:17:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6585 states, 6367 states have (on average 1.1581592586775562) internal successors, (7374), 6515 states have internal predecessors, (7374), 35 states have call successors, (35), 35 states have call predecessors, (35), 182 states have return successors, (697), 34 states have call predecessors, (697), 34 states have call successors, (697) [2023-03-30 23:17:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6585 states to 6585 states and 8106 transitions. [2023-03-30 23:17:02,417 INFO L78 Accepts]: Start accepts. Automaton has 6585 states and 8106 transitions. Word has length 255 [2023-03-30 23:17:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:17:02,418 INFO L495 AbstractCegarLoop]: Abstraction has 6585 states and 8106 transitions. [2023-03-30 23:17:02,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.2) internal successors, (372), 8 states have internal predecessors, (372), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-30 23:17:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 6585 states and 8106 transitions. [2023-03-30 23:17:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-03-30 23:17:02,424 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:17:02,424 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:17:02,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:17:02,630 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 [2023-03-30 23:17:02,630 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:17:02,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:17:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash -627931644, now seen corresponding path program 1 times [2023-03-30 23:17:02,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:17:02,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438638570] [2023-03-30 23:17:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:02,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:17:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:17:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:02,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:17:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:17:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:17:03,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:17:03,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438638570] [2023-03-30 23:17:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438638570] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:17:03,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742469989] [2023-03-30 23:17:03,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:03,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:03,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:17:03,210 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) [2023-03-30 23:17:03,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:17:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:03,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-30 23:17:03,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:17:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-03-30 23:17:03,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:17:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-03-30 23:17:04,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742469989] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-30 23:17:04,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-30 23:17:04,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 5] total 11 [2023-03-30 23:17:04,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356794827] [2023-03-30 23:17:04,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:17:04,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:17:04,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:17:04,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:17:04,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:17:04,038 INFO L87 Difference]: Start difference. First operand 6585 states and 8106 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:17:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:04,749 INFO L93 Difference]: Finished difference Result 7735 states and 9578 transitions. [2023-03-30 23:17:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:17:04,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 271 [2023-03-30 23:17:04,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:04,791 INFO L225 Difference]: With dead ends: 7735 [2023-03-30 23:17:04,791 INFO L226 Difference]: Without dead ends: 7733 [2023-03-30 23:17:04,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:17:04,796 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 179 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:04,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 157 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:17:04,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7733 states. [2023-03-30 23:17:04,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7733 to 7733. [2023-03-30 23:17:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7733 states, 7493 states have (on average 1.158414520218871) internal successors, (8680), 7651 states have internal predecessors, (8680), 41 states have call successors, (41), 41 states have call predecessors, (41), 198 states have return successors, (855), 40 states have call predecessors, (855), 40 states have call successors, (855) [2023-03-30 23:17:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7733 states to 7733 states and 9576 transitions. [2023-03-30 23:17:05,000 INFO L78 Accepts]: Start accepts. Automaton has 7733 states and 9576 transitions. Word has length 271 [2023-03-30 23:17:05,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:17:05,000 INFO L495 AbstractCegarLoop]: Abstraction has 7733 states and 9576 transitions. [2023-03-30 23:17:05,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:17:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 7733 states and 9576 transitions. [2023-03-30 23:17:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-03-30 23:17:05,008 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:17:05,008 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:17:05,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:17:05,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:05,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:17:05,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:17:05,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1575815710, now seen corresponding path program 1 times [2023-03-30 23:17:05,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:17:05,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329733415] [2023-03-30 23:17:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:05,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:17:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:17:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:17:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:05,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-30 23:17:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-03-30 23:17:05,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:17:05,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329733415] [2023-03-30 23:17:05,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329733415] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:17:05,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129487786] [2023-03-30 23:17:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:05,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:05,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:17:05,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:17:05,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:17:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:05,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:17:05,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:17:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 23:17:05,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:17:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 23:17:06,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129487786] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:17:06,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:17:06,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-03-30 23:17:06,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708251191] [2023-03-30 23:17:06,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:17:06,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:17:06,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:17:06,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:17:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:17:06,304 INFO L87 Difference]: Start difference. First operand 7733 states and 9576 transitions. Second operand has 8 states, 8 states have (on average 54.75) internal successors, (438), 6 states have internal predecessors, (438), 3 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-30 23:17:07,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:07,526 INFO L93 Difference]: Finished difference Result 15416 states and 19820 transitions. [2023-03-30 23:17:07,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:17:07,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 54.75) internal successors, (438), 6 states have internal predecessors, (438), 3 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 292 [2023-03-30 23:17:07,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:07,560 INFO L225 Difference]: With dead ends: 15416 [2023-03-30 23:17:07,561 INFO L226 Difference]: Without dead ends: 7877 [2023-03-30 23:17:07,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 587 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:17:07,580 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 964 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:07,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 111 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-30 23:17:07,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2023-03-30 23:17:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7733. [2023-03-30 23:17:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7733 states, 7493 states have (on average 1.1430668624049112) internal successors, (8565), 7651 states have internal predecessors, (8565), 41 states have call successors, (41), 41 states have call predecessors, (41), 198 states have return successors, (782), 40 states have call predecessors, (782), 40 states have call successors, (782) [2023-03-30 23:17:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7733 states to 7733 states and 9388 transitions. [2023-03-30 23:17:07,826 INFO L78 Accepts]: Start accepts. Automaton has 7733 states and 9388 transitions. Word has length 292 [2023-03-30 23:17:07,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:17:07,827 INFO L495 AbstractCegarLoop]: Abstraction has 7733 states and 9388 transitions. [2023-03-30 23:17:07,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 54.75) internal successors, (438), 6 states have internal predecessors, (438), 3 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-30 23:17:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 7733 states and 9388 transitions. [2023-03-30 23:17:07,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-03-30 23:17:07,836 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:17:07,836 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:17:07,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:17:08,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:08,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:17:08,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:17:08,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1958847943, now seen corresponding path program 1 times [2023-03-30 23:17:08,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:17:08,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547814343] [2023-03-30 23:17:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:08,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:17:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:17:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:17:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:17:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-03-30 23:17:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-03-30 23:17:08,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:17:08,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547814343] [2023-03-30 23:17:08,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547814343] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:17:08,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246240505] [2023-03-30 23:17:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:08,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:08,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:17:08,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:17:08,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:17:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:08,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-30 23:17:08,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:17:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-03-30 23:17:08,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:17:08,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246240505] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:17:08,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:17:08,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-03-30 23:17:08,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534460001] [2023-03-30 23:17:08,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:17:08,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:17:08,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:17:08,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:17:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:17:08,872 INFO L87 Difference]: Start difference. First operand 7733 states and 9388 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:17:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:09,773 INFO L93 Difference]: Finished difference Result 17008 states and 20700 transitions. [2023-03-30 23:17:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:17:09,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 323 [2023-03-30 23:17:09,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:09,801 INFO L225 Difference]: With dead ends: 17008 [2023-03-30 23:17:09,801 INFO L226 Difference]: Without dead ends: 9469 [2023-03-30 23:17:09,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:17:09,818 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 168 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:09,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 412 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-30 23:17:09,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9469 states. [2023-03-30 23:17:09,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9469 to 8111. [2023-03-30 23:17:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8111 states, 7866 states have (on average 1.1378082888380372) internal successors, (8950), 8025 states have internal predecessors, (8950), 43 states have call successors, (43), 43 states have call predecessors, (43), 201 states have return successors, (796), 42 states have call predecessors, (796), 42 states have call successors, (796) [2023-03-30 23:17:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8111 states to 8111 states and 9789 transitions. [2023-03-30 23:17:10,006 INFO L78 Accepts]: Start accepts. Automaton has 8111 states and 9789 transitions. Word has length 323 [2023-03-30 23:17:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:17:10,007 INFO L495 AbstractCegarLoop]: Abstraction has 8111 states and 9789 transitions. [2023-03-30 23:17:10,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:17:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8111 states and 9789 transitions. [2023-03-30 23:17:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-03-30 23:17:10,015 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:17:10,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:17:10,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 23:17:10,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:10,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:17:10,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:17:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash -427301189, now seen corresponding path program 1 times [2023-03-30 23:17:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:17:10,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685553761] [2023-03-30 23:17:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:10,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:17:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:17:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:17:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-30 23:17:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-03-30 23:17:10,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:17:10,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685553761] [2023-03-30 23:17:10,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685553761] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:17:10,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148906746] [2023-03-30 23:17:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:10,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:10,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:17:10,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:17:10,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 23:17:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:17:10,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:17:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 6 proven. 90 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-03-30 23:17:11,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:17:12,043 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 94 proven. 125 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 23:17:12,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148906746] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:17:12,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:17:12,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 13 [2023-03-30 23:17:12,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021184644] [2023-03-30 23:17:12,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:17:12,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-30 23:17:12,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:17:12,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-30 23:17:12,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:17:12,046 INFO L87 Difference]: Start difference. First operand 8111 states and 9789 transitions. Second operand has 13 states, 13 states have (on average 49.76923076923077) internal successors, (647), 11 states have internal predecessors, (647), 5 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:17:14,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:14,736 INFO L93 Difference]: Finished difference Result 26474 states and 33541 transitions. [2023-03-30 23:17:14,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-03-30 23:17:14,736 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 49.76923076923077) internal successors, (647), 11 states have internal predecessors, (647), 5 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 324 [2023-03-30 23:17:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:14,794 INFO L225 Difference]: With dead ends: 26474 [2023-03-30 23:17:14,794 INFO L226 Difference]: Without dead ends: 18557 [2023-03-30 23:17:14,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=428, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:17:14,811 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2665 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2665 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:14,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2665 Valid, 187 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-03-30 23:17:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18557 states. [2023-03-30 23:17:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18557 to 16241. [2023-03-30 23:17:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16241 states, 15813 states have (on average 1.1407070132169734) internal successors, (18038), 16071 states have internal predecessors, (18038), 85 states have call successors, (85), 85 states have call predecessors, (85), 342 states have return successors, (1728), 84 states have call predecessors, (1728), 84 states have call successors, (1728) [2023-03-30 23:17:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16241 states to 16241 states and 19851 transitions. [2023-03-30 23:17:15,182 INFO L78 Accepts]: Start accepts. Automaton has 16241 states and 19851 transitions. Word has length 324 [2023-03-30 23:17:15,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:17:15,182 INFO L495 AbstractCegarLoop]: Abstraction has 16241 states and 19851 transitions. [2023-03-30 23:17:15,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 49.76923076923077) internal successors, (647), 11 states have internal predecessors, (647), 5 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:17:15,183 INFO L276 IsEmpty]: Start isEmpty. Operand 16241 states and 19851 transitions. [2023-03-30 23:17:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-03-30 23:17:15,194 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:17:15,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:17:15,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 23:17:15,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:15,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:17:15,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:17:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1066964004, now seen corresponding path program 1 times [2023-03-30 23:17:15,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:17:15,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655967904] [2023-03-30 23:17:15,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:15,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:17:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:17:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:16,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:17:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:16,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:17:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:16,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-03-30 23:17:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 165 proven. 126 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-03-30 23:17:17,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:17:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655967904] [2023-03-30 23:17:17,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655967904] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:17:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507314412] [2023-03-30 23:17:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:17,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:17,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:17:17,041 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:17:17,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 23:17:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:17,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-30 23:17:17,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:17:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:17:17,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:17:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:17:19,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507314412] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:17:19,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:17:19,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-03-30 23:17:19,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862407132] [2023-03-30 23:17:19,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:17:19,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-30 23:17:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:17:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-30 23:17:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-03-30 23:17:19,510 INFO L87 Difference]: Start difference. First operand 16241 states and 19851 transitions. Second operand has 15 states, 15 states have (on average 34.06666666666667) internal successors, (511), 13 states have internal predecessors, (511), 7 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-03-30 23:17:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:25,580 INFO L93 Difference]: Finished difference Result 40885 states and 51006 transitions. [2023-03-30 23:17:25,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-03-30 23:17:25,581 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 34.06666666666667) internal successors, (511), 13 states have internal predecessors, (511), 7 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 353 [2023-03-30 23:17:25,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:25,684 INFO L225 Difference]: With dead ends: 40885 [2023-03-30 23:17:25,685 INFO L226 Difference]: Without dead ends: 23285 [2023-03-30 23:17:25,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 758 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1679 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=882, Invalid=4374, Unknown=0, NotChecked=0, Total=5256 [2023-03-30 23:17:25,711 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7830 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 4372 mSolverCounterSat, 1541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7830 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 5913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1541 IncrementalHoareTripleChecker+Valid, 4372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:25,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7830 Valid, 289 Invalid, 5913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1541 Valid, 4372 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-03-30 23:17:25,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23285 states. [2023-03-30 23:17:26,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23285 to 16368. [2023-03-30 23:17:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16368 states, 15872 states have (on average 1.1272051411290323) internal successors, (17891), 16198 states have internal predecessors, (17891), 85 states have call successors, (85), 85 states have call predecessors, (85), 410 states have return successors, (1702), 84 states have call predecessors, (1702), 84 states have call successors, (1702) [2023-03-30 23:17:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16368 states to 16368 states and 19678 transitions. [2023-03-30 23:17:26,082 INFO L78 Accepts]: Start accepts. Automaton has 16368 states and 19678 transitions. Word has length 353 [2023-03-30 23:17:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:17:26,083 INFO L495 AbstractCegarLoop]: Abstraction has 16368 states and 19678 transitions. [2023-03-30 23:17:26,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 34.06666666666667) internal successors, (511), 13 states have internal predecessors, (511), 7 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-03-30 23:17:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 16368 states and 19678 transitions. [2023-03-30 23:17:26,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-03-30 23:17:26,103 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:17:26,104 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:17:26,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-30 23:17:26,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-03-30 23:17:26,310 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:17:26,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:17:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1664176424, now seen corresponding path program 1 times [2023-03-30 23:17:26,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:17:26,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473422203] [2023-03-30 23:17:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:26,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:17:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat