/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/Problem12_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:29:02,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:29:02,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:29:02,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:29:02,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:29:02,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:29:02,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:29:02,473 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 [2023-04-01 22:29:02,500 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:29:02,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:29:02,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:29:02,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:29:02,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:29:02,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:29:02,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:29:02,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:29:02,503 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:29:02,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:29:02,504 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:29:02,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:29:02,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:29:02,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:29:02,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:29:02,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:29:02,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:29:02,505 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:29:02,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:29:02,505 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:29:02,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:29:02,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:29:02,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:29:02,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:29:02,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:29:02,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:29:02,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:29:02,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:29:02,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:29:02,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:29:02,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:29:02,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:29:02,507 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:29:02,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:29:02,507 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:29:02,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:29:02,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:29:02,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:29:02,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:29:02,711 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:29:02,712 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:29:02,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label34.c [2023-04-01 22:29:03,970 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:29:04,372 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:29:04,374 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label34.c [2023-04-01 22:29:04,400 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e3ab766/87dda89df17048469994b6574820cac9/FLAGa287583a4 [2023-04-01 22:29:04,416 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e3ab766/87dda89df17048469994b6574820cac9 [2023-04-01 22:29:04,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:29:04,420 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:29:04,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:29:04,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:29:04,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:29:04,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9bc434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04, skipping insertion in model container [2023-04-01 22:29:04,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:29:04,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:29:04,807 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/Problem12_label34.c[2340,2353] [2023-04-01 22:29:05,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:29:05,528 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:29:05,553 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/Problem12_label34.c[2340,2353] [2023-04-01 22:29:05,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:29:05,929 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:29:05,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05 WrapperNode [2023-04-01 22:29:05,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:29:05,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:29:05,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:29:05,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:29:05,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05" (1/1) ... [2023-04-01 22:29:05,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05" (1/1) ... [2023-04-01 22:29:05,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05" (1/1) ... [2023-04-01 22:29:05,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05" (1/1) ... [2023-04-01 22:29:06,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05" (1/1) ... [2023-04-01 22:29:06,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05" (1/1) ... [2023-04-01 22:29:06,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05" (1/1) ... [2023-04-01 22:29:06,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05" (1/1) ... [2023-04-01 22:29:06,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:29:06,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:29:06,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:29:06,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:29:06,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05" (1/1) ... [2023-04-01 22:29:06,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:29:06,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:06,226 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) [2023-04-01 22:29:06,247 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 [2023-04-01 22:29:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:29:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:29:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:29:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:29:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:29:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:29:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:29:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:29:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:29:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:29:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:29:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:29:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:29:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:29:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:29:06,355 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:29:06,357 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:29:10,144 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:29:10,161 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:29:10,161 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:29:10,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:29:10 BoogieIcfgContainer [2023-04-01 22:29:10,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:29:10,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:29:10,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:29:10,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:29:10,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:29:04" (1/3) ... [2023-04-01 22:29:10,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e90a1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:29:10, skipping insertion in model container [2023-04-01 22:29:10,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:05" (2/3) ... [2023-04-01 22:29:10,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e90a1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:29:10, skipping insertion in model container [2023-04-01 22:29:10,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:29:10" (3/3) ... [2023-04-01 22:29:10,173 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label34.c [2023-04-01 22:29:10,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:29:10,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:29:10,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:29:10,264 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;@701fafe9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:29:10,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:29:10,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:29:10,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 22:29:10,279 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:10,280 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] [2023-04-01 22:29:10,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:10,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:10,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1553377595, now seen corresponding path program 1 times [2023-04-01 22:29:10,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:10,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780079627] [2023-04-01 22:29:10,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:10,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:10,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:10,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780079627] [2023-04-01 22:29:10,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780079627] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:10,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:29:10,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:29:10,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568192868] [2023-04-01 22:29:10,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:10,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:29:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:10,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:29:10,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:29:10,765 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-04-01 22:29:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:16,027 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:29:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:29:16,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 22 [2023-04-01 22:29:16,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:16,058 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:29:16,058 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:29:16,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:29:16,079 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3380 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 2077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3380 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2077 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:16,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3380 Valid, 33 Invalid, 5238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2077 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 22:29:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:29:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:29:16,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1529 states have (on average 1.856115107913669) internal successors, (2838), 1530 states have internal predecessors, (2838), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 22:29:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2869 transitions. [2023-04-01 22:29:16,207 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2869 transitions. Word has length 22 [2023-04-01 22:29:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:16,209 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2869 transitions. [2023-04-01 22:29:16,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-04-01 22:29:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2869 transitions. [2023-04-01 22:29:16,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 22:29:16,215 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:16,216 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:29:16,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:29:16,216 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:16,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash 461807099, now seen corresponding path program 1 times [2023-04-01 22:29:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:16,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508317331] [2023-04-01 22:29:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:16,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:16,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:16,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:16,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508317331] [2023-04-01 22:29:16,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508317331] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:16,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:29:16,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:29:16,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352324959] [2023-04-01 22:29:16,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:16,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:29:16,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:16,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:29:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:29:16,710 INFO L87 Difference]: Start difference. First operand 1553 states and 2869 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 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) [2023-04-01 22:29:22,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:22,169 INFO L93 Difference]: Finished difference Result 4763 states and 8802 transitions. [2023-04-01 22:29:22,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:29:22,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 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 99 [2023-04-01 22:29:22,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:22,193 INFO L225 Difference]: With dead ends: 4763 [2023-04-01 22:29:22,193 INFO L226 Difference]: Without dead ends: 3216 [2023-04-01 22:29:22,203 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 [2023-04-01 22:29:22,204 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3154 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5262 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3154 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 6198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 5262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:22,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3154 Valid, 115 Invalid, 6198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 5262 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 22:29:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2023-04-01 22:29:22,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3139. [2023-04-01 22:29:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 3080 states have (on average 1.6376623376623376) internal successors, (5044), 3086 states have internal predecessors, (5044), 18 states have call successors, (18), 18 states have call predecessors, (18), 40 states have return successors, (85), 34 states have call predecessors, (85), 17 states have call successors, (85) [2023-04-01 22:29:22,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5147 transitions. [2023-04-01 22:29:22,296 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5147 transitions. Word has length 99 [2023-04-01 22:29:22,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:22,297 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 5147 transitions. [2023-04-01 22:29:22,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 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) [2023-04-01 22:29:22,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5147 transitions. [2023-04-01 22:29:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 22:29:22,302 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:22,302 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:29:22,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:29:22,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:22,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1852854704, now seen corresponding path program 1 times [2023-04-01 22:29:22,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:22,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505318358] [2023-04-01 22:29:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:22,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:22,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:22,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:22,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505318358] [2023-04-01 22:29:22,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505318358] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:22,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:29:22,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:29:22,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254502617] [2023-04-01 22:29:22,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:22,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:29:22,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:22,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:29:22,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:29:22,701 INFO L87 Difference]: Start difference. First operand 3139 states and 5147 transitions. Second operand has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 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) [2023-04-01 22:29:27,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:27,840 INFO L93 Difference]: Finished difference Result 9827 states and 16306 transitions. [2023-04-01 22:29:27,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:29:27,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 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 112 [2023-04-01 22:29:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:27,872 INFO L225 Difference]: With dead ends: 9827 [2023-04-01 22:29:27,872 INFO L226 Difference]: Without dead ends: 6694 [2023-04-01 22:29:27,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:29:27,885 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 5425 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4564 mSolverCounterSat, 1185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5425 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 5749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1185 IncrementalHoareTripleChecker+Valid, 4564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:27,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5425 Valid, 139 Invalid, 5749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1185 Valid, 4564 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-01 22:29:27,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2023-04-01 22:29:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 6473. [2023-04-01 22:29:28,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6473 states, 6282 states have (on average 1.4186564788283986) internal successors, (8912), 6322 states have internal predecessors, (8912), 34 states have call successors, (34), 34 states have call predecessors, (34), 156 states have return successors, (437), 116 states have call predecessors, (437), 33 states have call successors, (437) [2023-04-01 22:29:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6473 states to 6473 states and 9383 transitions. [2023-04-01 22:29:28,097 INFO L78 Accepts]: Start accepts. Automaton has 6473 states and 9383 transitions. Word has length 112 [2023-04-01 22:29:28,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:28,098 INFO L495 AbstractCegarLoop]: Abstraction has 6473 states and 9383 transitions. [2023-04-01 22:29:28,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 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) [2023-04-01 22:29:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 6473 states and 9383 transitions. [2023-04-01 22:29:28,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-01 22:29:28,105 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:28,106 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 22:29:28,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:29:28,107 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:28,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:28,107 INFO L85 PathProgramCache]: Analyzing trace with hash 400649068, now seen corresponding path program 1 times [2023-04-01 22:29:28,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:28,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902408579] [2023-04-01 22:29:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:28,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:28,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:28,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:28,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902408579] [2023-04-01 22:29:28,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902408579] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:28,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:29:28,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:29:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036972743] [2023-04-01 22:29:28,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:28,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:29:28,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:28,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:29:28,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:29:28,508 INFO L87 Difference]: Start difference. First operand 6473 states and 9383 transitions. Second operand has 8 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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) [2023-04-01 22:29:35,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:35,172 INFO L93 Difference]: Finished difference Result 26175 states and 40156 transitions. [2023-04-01 22:29:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 22:29:35,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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 146 [2023-04-01 22:29:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:35,252 INFO L225 Difference]: With dead ends: 26175 [2023-04-01 22:29:35,252 INFO L226 Difference]: Without dead ends: 19708 [2023-04-01 22:29:35,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:29:35,275 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 9413 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 2469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9413 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 7823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2469 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:35,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9413 Valid, 134 Invalid, 7823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2469 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 22:29:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19708 states. [2023-04-01 22:29:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19708 to 18774. [2023-04-01 22:29:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18774 states, 18159 states have (on average 1.2937386419957047) internal successors, (23493), 18315 states have internal predecessors, (23493), 94 states have call successors, (94), 94 states have call predecessors, (94), 520 states have return successors, (2642), 364 states have call predecessors, (2642), 93 states have call successors, (2642) [2023-04-01 22:29:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18774 states to 18774 states and 26229 transitions. [2023-04-01 22:29:35,771 INFO L78 Accepts]: Start accepts. Automaton has 18774 states and 26229 transitions. Word has length 146 [2023-04-01 22:29:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:35,772 INFO L495 AbstractCegarLoop]: Abstraction has 18774 states and 26229 transitions. [2023-04-01 22:29:35,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 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) [2023-04-01 22:29:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 18774 states and 26229 transitions. [2023-04-01 22:29:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-01 22:29:35,774 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:35,775 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 22:29:35,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:29:35,775 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:35,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1690093491, now seen corresponding path program 1 times [2023-04-01 22:29:35,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:35,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255861492] [2023-04-01 22:29:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:35,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:35,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:29:36,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255861492] [2023-04-01 22:29:36,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255861492] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:36,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594198380] [2023-04-01 22:29:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:36,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:36,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:36,145 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) [2023-04-01 22:29:36,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:29:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:36,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:29:36,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:36,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:29:36,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594198380] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:36,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:29:36,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-04-01 22:29:36,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848009839] [2023-04-01 22:29:36,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:36,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:29:36,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:29:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:29:36,472 INFO L87 Difference]: Start difference. First operand 18774 states and 26229 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:29:39,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:39,381 INFO L93 Difference]: Finished difference Result 43112 states and 59943 transitions. [2023-04-01 22:29:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:29:39,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2023-04-01 22:29:39,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:39,470 INFO L225 Difference]: With dead ends: 43112 [2023-04-01 22:29:39,470 INFO L226 Difference]: Without dead ends: 24344 [2023-04-01 22:29:39,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:29:39,520 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 835 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:39,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 273 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 22:29:39,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24344 states. [2023-04-01 22:29:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24344 to 21971. [2023-04-01 22:29:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21971 states, 21274 states have (on average 1.2454639466014854) internal successors, (26496), 21451 states have internal predecessors, (26496), 110 states have call successors, (110), 110 states have call predecessors, (110), 586 states have return successors, (3170), 409 states have call predecessors, (3170), 109 states have call successors, (3170) [2023-04-01 22:29:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21971 states to 21971 states and 29776 transitions. [2023-04-01 22:29:40,200 INFO L78 Accepts]: Start accepts. Automaton has 21971 states and 29776 transitions. Word has length 167 [2023-04-01 22:29:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:40,206 INFO L495 AbstractCegarLoop]: Abstraction has 21971 states and 29776 transitions. [2023-04-01 22:29:40,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:29:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 21971 states and 29776 transitions. [2023-04-01 22:29:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-04-01 22:29:40,214 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:40,214 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-04-01 22:29:40,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 22:29:40,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:40,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:40,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash -769276628, now seen corresponding path program 1 times [2023-04-01 22:29:40,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:40,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941260275] [2023-04-01 22:29:40,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:40,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:40,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:40,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:40,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:29:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:29:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:29:40,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:40,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941260275] [2023-04-01 22:29:40,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941260275] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:40,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908762511] [2023-04-01 22:29:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:40,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:40,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:40,886 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) [2023-04-01 22:29:40,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:29:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:41,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:29:41,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:29:41,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:29:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:29:41,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908762511] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:29:41,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:29:41,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:29:41,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533164149] [2023-04-01 22:29:41,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:29:41,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:29:41,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:41,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:29:41,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:29:41,444 INFO L87 Difference]: Start difference. First operand 21971 states and 29776 transitions. Second operand has 11 states, 11 states have (on average 36.72727272727273) internal successors, (404), 9 states have internal predecessors, (404), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:29:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:58,118 INFO L93 Difference]: Finished difference Result 111090 states and 189608 transitions. [2023-04-01 22:29:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-01 22:29:58,119 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 36.72727272727273) internal successors, (404), 9 states have internal predecessors, (404), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 324 [2023-04-01 22:29:58,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:58,729 INFO L225 Difference]: With dead ends: 111090 [2023-04-01 22:29:58,729 INFO L226 Difference]: Without dead ends: 85946 [2023-04-01 22:29:58,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 686 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=422, Invalid=1834, Unknown=0, NotChecked=0, Total=2256 [2023-04-01 22:29:58,818 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 6767 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 19524 mSolverCounterSat, 3717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6771 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 23241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3717 IncrementalHoareTripleChecker+Valid, 19524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:58,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6771 Valid, 790 Invalid, 23241 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3717 Valid, 19524 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-04-01 22:29:58,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85946 states. [2023-04-01 22:30:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85946 to 75911. [2023-04-01 22:30:01,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75911 states, 73731 states have (on average 1.1468988620797222) internal successors, (84562), 74297 states have internal predecessors, (84562), 477 states have call successors, (477), 378 states have call predecessors, (477), 1702 states have return successors, (23456), 1235 states have call predecessors, (23456), 476 states have call successors, (23456) [2023-04-01 22:30:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75911 states to 75911 states and 108495 transitions. [2023-04-01 22:30:02,021 INFO L78 Accepts]: Start accepts. Automaton has 75911 states and 108495 transitions. Word has length 324 [2023-04-01 22:30:02,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:02,021 INFO L495 AbstractCegarLoop]: Abstraction has 75911 states and 108495 transitions. [2023-04-01 22:30:02,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 36.72727272727273) internal successors, (404), 9 states have internal predecessors, (404), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:30:02,022 INFO L276 IsEmpty]: Start isEmpty. Operand 75911 states and 108495 transitions. [2023-04-01 22:30:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-04-01 22:30:02,031 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:02,031 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-04-01 22:30:02,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:30:02,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 22:30:02,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:02,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1278484159, now seen corresponding path program 1 times [2023-04-01 22:30:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:02,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081990523] [2023-04-01 22:30:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:02,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:02,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:30:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-04-01 22:30:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 148 proven. 84 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-04-01 22:30:02,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:02,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081990523] [2023-04-01 22:30:02,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081990523] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:02,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920566307] [2023-04-01 22:30:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:02,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:02,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:02,879 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) [2023-04-01 22:30:02,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:30:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:03,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:03,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 22:30:03,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:30:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 149 proven. 85 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-04-01 22:30:03,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920566307] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:30:03,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:30:03,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:30:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367029316] [2023-04-01 22:30:03,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:30:03,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:30:03,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:03,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:30:03,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:30:03,521 INFO L87 Difference]: Start difference. First operand 75911 states and 108495 transitions. Second operand has 11 states, 11 states have (on average 48.63636363636363) internal successors, (535), 9 states have internal predecessors, (535), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:30:11,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:11,746 INFO L93 Difference]: Finished difference Result 172247 states and 249367 transitions. [2023-04-01 22:30:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:30:11,747 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 48.63636363636363) internal successors, (535), 9 states have internal predecessors, (535), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 357 [2023-04-01 22:30:11,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:12,211 INFO L225 Difference]: With dead ends: 172247 [2023-04-01 22:30:12,212 INFO L226 Difference]: Without dead ends: 96346 [2023-04-01 22:30:12,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 723 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:30:12,349 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 5258 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 10061 mSolverCounterSat, 1945 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5258 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 12006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1945 IncrementalHoareTripleChecker+Valid, 10061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:12,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5258 Valid, 241 Invalid, 12006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1945 Valid, 10061 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 22:30:12,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96346 states. [2023-04-01 22:30:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96346 to 89280. [2023-04-01 22:30:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89280 states, 86842 states have (on average 1.1203680246885148) internal successors, (97295), 87459 states have internal predecessors, (97295), 560 states have call successors, (560), 446 states have call predecessors, (560), 1877 states have return successors, (23536), 1374 states have call predecessors, (23536), 559 states have call successors, (23536) [2023-04-01 22:30:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89280 states to 89280 states and 121391 transitions. [2023-04-01 22:30:14,673 INFO L78 Accepts]: Start accepts. Automaton has 89280 states and 121391 transitions. Word has length 357 [2023-04-01 22:30:14,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:14,674 INFO L495 AbstractCegarLoop]: Abstraction has 89280 states and 121391 transitions. [2023-04-01 22:30:14,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 48.63636363636363) internal successors, (535), 9 states have internal predecessors, (535), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:30:14,674 INFO L276 IsEmpty]: Start isEmpty. Operand 89280 states and 121391 transitions. [2023-04-01 22:30:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-04-01 22:30:14,687 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:14,687 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:30:14,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:30:14,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:14,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:14,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1612212912, now seen corresponding path program 1 times [2023-04-01 22:30:14,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:14,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839634004] [2023-04-01 22:30:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:14,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:15,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:30:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:30:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:30:15,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:15,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839634004] [2023-04-01 22:30:15,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839634004] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:15,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125123542] [2023-04-01 22:30:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:15,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:15,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:15,484 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) [2023-04-01 22:30:15,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:30:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:15,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:15,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:30:15,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:30:15,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125123542] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:15,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:30:15,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:30:15,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568332856] [2023-04-01 22:30:15,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:15,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:30:15,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:15,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:30:15,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:30:15,733 INFO L87 Difference]: Start difference. First operand 89280 states and 121391 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2023-04-01 22:30:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:19,970 INFO L93 Difference]: Finished difference Result 202392 states and 278000 transitions. [2023-04-01 22:30:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:30:19,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 402 [2023-04-01 22:30:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:20,529 INFO L225 Difference]: With dead ends: 202392 [2023-04-01 22:30:20,529 INFO L226 Difference]: Without dead ends: 113122 [2023-04-01 22:30:20,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 409 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:30:20,652 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 849 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:20,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1237 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 22:30:20,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113122 states. [2023-04-01 22:30:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113122 to 107675. [2023-04-01 22:30:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107675 states, 105052 states have (on average 1.117351406922286) internal successors, (117380), 105665 states have internal predecessors, (117380), 660 states have call successors, (660), 542 states have call predecessors, (660), 1962 states have return successors, (25862), 1467 states have call predecessors, (25862), 659 states have call successors, (25862) [2023-04-01 22:30:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107675 states to 107675 states and 143902 transitions. [2023-04-01 22:30:23,685 INFO L78 Accepts]: Start accepts. Automaton has 107675 states and 143902 transitions. Word has length 402 [2023-04-01 22:30:23,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:23,686 INFO L495 AbstractCegarLoop]: Abstraction has 107675 states and 143902 transitions. [2023-04-01 22:30:23,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2023-04-01 22:30:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 107675 states and 143902 transitions. [2023-04-01 22:30:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-04-01 22:30:23,753 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:23,753 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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] [2023-04-01 22:30:23,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:30:23,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:23,960 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:23,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash -746081949, now seen corresponding path program 1 times [2023-04-01 22:30:23,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:23,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345709316] [2023-04-01 22:30:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:23,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:24,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:30:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:24,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 22:30:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2023-04-01 22:30:24,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:24,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345709316] [2023-04-01 22:30:24,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345709316] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:24,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203386711] [2023-04-01 22:30:24,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:24,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:24,776 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) [2023-04-01 22:30:24,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:30:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:24,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:24,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2023-04-01 22:30:25,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:30:25,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203386711] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:25,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:30:25,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:30:25,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936985000] [2023-04-01 22:30:25,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:25,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:30:25,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:25,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:30:25,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:30:25,036 INFO L87 Difference]: Start difference. First operand 107675 states and 143902 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-04-01 22:30:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:29,467 INFO L93 Difference]: Finished difference Result 243835 states and 333768 transitions. [2023-04-01 22:30:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:30:29,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 615 [2023-04-01 22:30:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:30,019 INFO L225 Difference]: With dead ends: 243835 [2023-04-01 22:30:30,019 INFO L226 Difference]: Without dead ends: 136266 [2023-04-01 22:30:30,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:30:30,124 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 807 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:30,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1387 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 22:30:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136266 states. [2023-04-01 22:30:32,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136266 to 131610. [2023-04-01 22:30:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131610 states, 128694 states have (on average 1.1081246988981615) internal successors, (142609), 129315 states have internal predecessors, (142609), 815 states have call successors, (815), 666 states have call predecessors, (815), 2100 states have return successors, (29866), 1628 states have call predecessors, (29866), 814 states have call successors, (29866) [2023-04-01 22:30:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131610 states to 131610 states and 173290 transitions. [2023-04-01 22:30:32,878 INFO L78 Accepts]: Start accepts. Automaton has 131610 states and 173290 transitions. Word has length 615 [2023-04-01 22:30:32,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:32,879 INFO L495 AbstractCegarLoop]: Abstraction has 131610 states and 173290 transitions. [2023-04-01 22:30:32,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-04-01 22:30:32,879 INFO L276 IsEmpty]: Start isEmpty. Operand 131610 states and 173290 transitions. [2023-04-01 22:30:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2023-04-01 22:30:33,313 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:33,313 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:30:33,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:30:33,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:33,520 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:33,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash -848218269, now seen corresponding path program 1 times [2023-04-01 22:30:33,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:33,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713693910] [2023-04-01 22:30:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:33,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:30:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:30:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:35,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2023-04-01 22:30:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:30:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 290 proven. 338 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-04-01 22:30:35,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:35,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713693910] [2023-04-01 22:30:35,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713693910] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:35,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56167037] [2023-04-01 22:30:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:35,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:35,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:35,748 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) [2023-04-01 22:30:35,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:30:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:36,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:36,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 678 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-04-01 22:30:36,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:30:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 297 proven. 177 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-04-01 22:30:36,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56167037] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:30:36,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:30:36,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 16 [2023-04-01 22:30:36,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953642802] [2023-04-01 22:30:36,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:30:36,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 22:30:36,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 22:30:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:30:36,893 INFO L87 Difference]: Start difference. First operand 131610 states and 173290 transitions. Second operand has 16 states, 16 states have (on average 95.8125) internal successors, (1533), 14 states have internal predecessors, (1533), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 22:30:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:56,826 INFO L93 Difference]: Finished difference Result 242938 states and 324480 transitions. [2023-04-01 22:30:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-04-01 22:30:56,827 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 95.8125) internal successors, (1533), 14 states have internal predecessors, (1533), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 890 [2023-04-01 22:30:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:57,125 INFO L225 Difference]: With dead ends: 242938 [2023-04-01 22:30:57,125 INFO L226 Difference]: Without dead ends: 111338 [2023-04-01 22:30:57,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2026 GetRequests, 1891 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6908 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2717, Invalid=15373, Unknown=0, NotChecked=0, Total=18090 [2023-04-01 22:30:57,424 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 17860 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 17025 mSolverCounterSat, 4728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17860 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 21753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4728 IncrementalHoareTripleChecker+Valid, 17025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:57,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17860 Valid, 1270 Invalid, 21753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4728 Valid, 17025 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-04-01 22:30:57,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111338 states. [2023-04-01 22:30:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111338 to 102443. [2023-04-01 22:30:59,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102443 states, 99752 states have (on average 1.0625350870157992) internal successors, (105990), 100482 states have internal predecessors, (105990), 514 states have call successors, (514), 514 states have call predecessors, (514), 2176 states have return successors, (10045), 1446 states have call predecessors, (10045), 513 states have call successors, (10045) [2023-04-01 22:30:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102443 states to 102443 states and 116549 transitions. [2023-04-01 22:30:59,449 INFO L78 Accepts]: Start accepts. Automaton has 102443 states and 116549 transitions. Word has length 890 [2023-04-01 22:30:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:59,450 INFO L495 AbstractCegarLoop]: Abstraction has 102443 states and 116549 transitions. [2023-04-01 22:30:59,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.8125) internal successors, (1533), 14 states have internal predecessors, (1533), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 22:30:59,451 INFO L276 IsEmpty]: Start isEmpty. Operand 102443 states and 116549 transitions. [2023-04-01 22:30:59,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2023-04-01 22:30:59,495 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:59,496 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:30:59,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:30:59,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:59,702 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:59,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:59,703 INFO L85 PathProgramCache]: Analyzing trace with hash 181566334, now seen corresponding path program 1 times [2023-04-01 22:30:59,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:59,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351589309] [2023-04-01 22:30:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:59,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:01,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:31:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:31:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:01,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:31:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 22:31:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:02,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:31:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 194 proven. 176 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-04-01 22:31:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351589309] [2023-04-01 22:31:02,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351589309] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083936745] [2023-04-01 22:31:02,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:02,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:02,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:02,360 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) [2023-04-01 22:31:02,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:31:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:02,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 22:31:02,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:31:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-04-01 22:31:03,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:31:03,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083936745] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:31:03,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:31:03,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 22:31:03,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795600847] [2023-04-01 22:31:03,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:31:03,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:31:03,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:31:03,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:31:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:31:03,555 INFO L87 Difference]: Start difference. First operand 102443 states and 116549 transitions. Second operand has 5 states, 5 states have (on average 122.0) internal successors, (610), 4 states have internal predecessors, (610), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 22:31:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:31:08,920 INFO L93 Difference]: Finished difference Result 210637 states and 239800 transitions. [2023-04-01 22:31:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 22:31:08,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 122.0) internal successors, (610), 4 states have internal predecessors, (610), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 810 [2023-04-01 22:31:08,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:31:09,196 INFO L225 Difference]: With dead ends: 210637 [2023-04-01 22:31:09,196 INFO L226 Difference]: Without dead ends: 108200 [2023-04-01 22:31:09,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 816 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:31:09,292 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 2026 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4868 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 5205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 4868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:31:09,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2026 Valid, 157 Invalid, 5205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 4868 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-04-01 22:31:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108200 states. [2023-04-01 22:31:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108200 to 107882. [2023-04-01 22:31:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107882 states, 105108 states have (on average 1.0595768162271189) internal successors, (111370), 105849 states have internal predecessors, (111370), 542 states have call successors, (542), 542 states have call predecessors, (542), 2231 states have return successors, (10267), 1490 states have call predecessors, (10267), 541 states have call successors, (10267) [2023-04-01 22:31:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107882 states to 107882 states and 122179 transitions. [2023-04-01 22:31:11,554 INFO L78 Accepts]: Start accepts. Automaton has 107882 states and 122179 transitions. Word has length 810 [2023-04-01 22:31:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:31:11,554 INFO L495 AbstractCegarLoop]: Abstraction has 107882 states and 122179 transitions. [2023-04-01 22:31:11,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.0) internal successors, (610), 4 states have internal predecessors, (610), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 22:31:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 107882 states and 122179 transitions. [2023-04-01 22:31:11,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2023-04-01 22:31:11,595 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:31:11,595 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:31:11,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 22:31:11,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:11,796 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:31:11,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:31:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1255597416, now seen corresponding path program 1 times [2023-04-01 22:31:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:31:11,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643726995] [2023-04-01 22:31:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:11,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:31:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:13,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:31:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:31:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:13,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:31:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 22:31:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2023-04-01 22:31:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:14,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:31:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 72 proven. 496 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-04-01 22:31:14,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:14,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643726995] [2023-04-01 22:31:14,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643726995] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:14,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673025940] [2023-04-01 22:31:14,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:14,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:14,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:14,124 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) [2023-04-01 22:31:14,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:31:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:14,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:31:14,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:31:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 547 proven. 2 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-04-01 22:31:14,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:31:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 141 proven. 294 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-04-01 22:31:16,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673025940] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:31:16,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:31:16,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 5] total 21 [2023-04-01 22:31:16,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758418570] [2023-04-01 22:31:16,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:31:16,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 22:31:16,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:31:16,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 22:31:16,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:31:16,986 INFO L87 Difference]: Start difference. First operand 107882 states and 122179 transitions. Second operand has 21 states, 21 states have (on average 71.95238095238095) internal successors, (1511), 19 states have internal predecessors, (1511), 6 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 22:31:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:31:38,558 INFO L93 Difference]: Finished difference Result 245105 states and 280495 transitions. [2023-04-01 22:31:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-04-01 22:31:38,559 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 71.95238095238095) internal successors, (1511), 19 states have internal predecessors, (1511), 6 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 885 [2023-04-01 22:31:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:31:38,860 INFO L225 Difference]: With dead ends: 245105 [2023-04-01 22:31:38,860 INFO L226 Difference]: Without dead ends: 130813 [2023-04-01 22:31:38,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2016 GetRequests, 1877 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7320 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3133, Invalid=16327, Unknown=0, NotChecked=0, Total=19460 [2023-04-01 22:31:38,982 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 20684 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 20424 mSolverCounterSat, 3646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20699 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 24070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3646 IncrementalHoareTripleChecker+Valid, 20424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:31:38,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20699 Valid, 1077 Invalid, 24070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3646 Valid, 20424 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-04-01 22:31:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130813 states. [2023-04-01 22:31:41,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130813 to 119856. [2023-04-01 22:31:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119856 states, 117067 states have (on average 1.0435562541108938) internal successors, (122166), 117767 states have internal predecessors, (122166), 606 states have call successors, (606), 606 states have call predecessors, (606), 2182 states have return successors, (9175), 1482 states have call predecessors, (9175), 605 states have call successors, (9175) [2023-04-01 22:31:41,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119856 states to 119856 states and 131947 transitions. [2023-04-01 22:31:41,467 INFO L78 Accepts]: Start accepts. Automaton has 119856 states and 131947 transitions. Word has length 885 [2023-04-01 22:31:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:31:41,467 INFO L495 AbstractCegarLoop]: Abstraction has 119856 states and 131947 transitions. [2023-04-01 22:31:41,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 71.95238095238095) internal successors, (1511), 19 states have internal predecessors, (1511), 6 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 22:31:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 119856 states and 131947 transitions. [2023-04-01 22:31:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2023-04-01 22:31:41,507 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:31:41,508 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:31:41,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:31:41,709 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,SelfDestructingSolverStorable11 [2023-04-01 22:31:41,709 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:31:41,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:31:41,710 INFO L85 PathProgramCache]: Analyzing trace with hash 190906815, now seen corresponding path program 1 times [2023-04-01 22:31:41,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:31:41,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849518052] [2023-04-01 22:31:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:41,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:31:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:31:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:31:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:31:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:31:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2023-04-01 22:31:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:44,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:31:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 450 proven. 296 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-04-01 22:31:44,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849518052] [2023-04-01 22:31:44,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849518052] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731371507] [2023-04-01 22:31:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:44,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:44,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:44,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:31:44,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:31:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:45,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:31:45,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:31:53,479 WARN L223 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 118 DAG size of output: 68 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 22:31:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 876 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 22:31:54,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:31:57,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731371507] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:57,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:31:57,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-04-01 22:31:57,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834604745] [2023-04-01 22:31:57,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 22:31:57,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 22:31:57,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:31:57,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 22:31:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-04-01 22:31:57,630 INFO L87 Difference]: Start difference. First operand 119856 states and 131947 transitions. Second operand has 17 states, 17 states have (on average 89.17647058823529) internal successors, (1516), 15 states have internal predecessors, (1516), 6 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 22:32:34,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:34,896 INFO L93 Difference]: Finished difference Result 314482 states and 350587 transitions. [2023-04-01 22:32:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-04-01 22:32:34,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 89.17647058823529) internal successors, (1516), 15 states have internal predecessors, (1516), 6 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 932 [2023-04-01 22:32:34,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:35,348 INFO L225 Difference]: With dead ends: 314482 [2023-04-01 22:32:35,348 INFO L226 Difference]: Without dead ends: 195399 [2023-04-01 22:32:35,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1718 GetRequests, 1641 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=1156, Invalid=4850, Unknown=0, NotChecked=0, Total=6006 [2023-04-01 22:32:35,710 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 10154 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 19028 mSolverCounterSat, 3991 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10161 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 23019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3991 IncrementalHoareTripleChecker+Valid, 19028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:35,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10161 Valid, 446 Invalid, 23019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3991 Valid, 19028 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2023-04-01 22:32:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195399 states.