/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/Problem03_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 22:46:03,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 22:46:03,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 22:46:03,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 22:46:03,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 22:46:03,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 22:46:03,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 22:46:03,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 22:46:04,010 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 22:46:04,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 22:46:04,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 22:46:04,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 22:46:04,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 22:46:04,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 22:46:04,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 22:46:04,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 22:46:04,012 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 22:46:04,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 22:46:04,012 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 22:46:04,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 22:46:04,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 22:46:04,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 22:46:04,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 22:46:04,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 22:46:04,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 22:46:04,013 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 22:46:04,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 22:46:04,013 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 22:46:04,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 22:46:04,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 22:46:04,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 22:46:04,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 22:46:04,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:46:04,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 22:46:04,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 22:46:04,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 22:46:04,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 22:46:04,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 22:46:04,014 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 22:46:04,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 22:46:04,015 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 22:46:04,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 22:46:04,015 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 22:46:04,015 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 22:46:04,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 22:46:04,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 22:46:04,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 22:46:04,213 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 22:46:04,213 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 22:46:04,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label38.c [2023-03-30 22:46:05,248 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 22:46:05,490 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 22:46:05,490 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label38.c [2023-03-30 22:46:05,498 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/214be69b7/88d7d5aaca8c40dfa4d69ddc3376860b/FLAGf6ff9c34c [2023-03-30 22:46:05,508 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/214be69b7/88d7d5aaca8c40dfa4d69ddc3376860b [2023-03-30 22:46:05,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 22:46:05,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 22:46:05,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 22:46:05,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 22:46:05,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 22:46:05,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:46:05" (1/1) ... [2023-03-30 22:46:05,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14753fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:05, skipping insertion in model container [2023-03-30 22:46:05,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:46:05" (1/1) ... [2023-03-30 22:46:05,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 22:46:05,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 22:46:05,967 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/Problem03_label38.c[61364,61377] [2023-03-30 22:46:05,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:46:05,998 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 22:46:06,176 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/Problem03_label38.c[61364,61377] [2023-03-30 22:46:06,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:46:06,192 INFO L208 MainTranslator]: Completed translation [2023-03-30 22:46:06,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06 WrapperNode [2023-03-30 22:46:06,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 22:46:06,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 22:46:06,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 22:46:06,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 22:46:06,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06" (1/1) ... [2023-03-30 22:46:06,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06" (1/1) ... [2023-03-30 22:46:06,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06" (1/1) ... [2023-03-30 22:46:06,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06" (1/1) ... [2023-03-30 22:46:06,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06" (1/1) ... [2023-03-30 22:46:06,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06" (1/1) ... [2023-03-30 22:46:06,307 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06" (1/1) ... [2023-03-30 22:46:06,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06" (1/1) ... [2023-03-30 22:46:06,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 22:46:06,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 22:46:06,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 22:46:06,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 22:46:06,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06" (1/1) ... [2023-03-30 22:46:06,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:46:06,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:46:06,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 22:46:06,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 22:46:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 22:46:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 22:46:06,403 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 22:46:06,403 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 22:46:06,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 22:46:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 22:46:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 22:46:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 22:46:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 22:46:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 22:46:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 22:46:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 22:46:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 22:46:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 22:46:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 22:46:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 22:46:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 22:46:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 22:46:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 22:46:06,490 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 22:46:06,491 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 22:46:07,771 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 22:46:07,781 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 22:46:07,781 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 22:46:07,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:46:07 BoogieIcfgContainer [2023-03-30 22:46:07,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 22:46:07,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 22:46:07,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 22:46:07,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 22:46:07,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:46:05" (1/3) ... [2023-03-30 22:46:07,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2178d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:46:07, skipping insertion in model container [2023-03-30 22:46:07,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:46:06" (2/3) ... [2023-03-30 22:46:07,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2178d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:46:07, skipping insertion in model container [2023-03-30 22:46:07,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:46:07" (3/3) ... [2023-03-30 22:46:07,788 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label38.c [2023-03-30 22:46:07,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 22:46:07,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 22:46:07,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 22:46:07,834 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;@ae23c48, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 22:46:07,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 22:46:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 22:46:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-03-30 22:46:07,849 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:46:07,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:46:07,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:46:07,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:46:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1858523287, now seen corresponding path program 1 times [2023-03-30 22:46:07,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:46:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333911943] [2023-03-30 22:46:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:46:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:08,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:46:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:46:08,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:46:08,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333911943] [2023-03-30 22:46:08,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333911943] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:46:08,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:46:08,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 22:46:08,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170352731] [2023-03-30 22:46:08,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:46:08,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 22:46:08,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:46:08,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 22:46:08,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 22:46:08,855 INFO L87 Difference]: Start difference. First operand has 311 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 22:46:10,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:46:10,501 INFO L93 Difference]: Finished difference Result 858 states and 1518 transitions. [2023-03-30 22:46:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 22:46:10,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 207 [2023-03-30 22:46:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:46:10,512 INFO L225 Difference]: With dead ends: 858 [2023-03-30 22:46:10,512 INFO L226 Difference]: Without dead ends: 483 [2023-03-30 22:46:10,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 22:46:10,518 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 630 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 22:46:10,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 54 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 22:46:10,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-03-30 22:46:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 465. [2023-03-30 22:46:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 455 states have (on average 1.6087912087912088) internal successors, (732), 457 states have internal predecessors, (732), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-30 22:46:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 743 transitions. [2023-03-30 22:46:10,567 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 743 transitions. Word has length 207 [2023-03-30 22:46:10,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:46:10,568 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 743 transitions. [2023-03-30 22:46:10,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 22:46:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 743 transitions. [2023-03-30 22:46:10,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-03-30 22:46:10,572 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:46:10,572 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 22:46:10,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 22:46:10,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:46:10,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:46:10,573 INFO L85 PathProgramCache]: Analyzing trace with hash -811801091, now seen corresponding path program 1 times [2023-03-30 22:46:10,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:46:10,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359910713] [2023-03-30 22:46:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:10,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:46:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:11,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:46:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:46:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:46:11,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:46:11,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359910713] [2023-03-30 22:46:11,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359910713] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:46:11,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:46:11,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 22:46:11,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799743265] [2023-03-30 22:46:11,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:46:11,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 22:46:11,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:46:11,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 22:46:11,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 22:46:11,183 INFO L87 Difference]: Start difference. First operand 465 states and 743 transitions. Second operand has 7 states, 6 states have (on average 35.0) internal successors, (210), 4 states have internal predecessors, (210), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 22:46:12,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:46:12,637 INFO L93 Difference]: Finished difference Result 1378 states and 2238 transitions. [2023-03-30 22:46:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 22:46:12,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 35.0) internal successors, (210), 4 states have internal predecessors, (210), 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 216 [2023-03-30 22:46:12,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:46:12,642 INFO L225 Difference]: With dead ends: 1378 [2023-03-30 22:46:12,642 INFO L226 Difference]: Without dead ends: 919 [2023-03-30 22:46:12,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 22:46:12,644 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1176 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-30 22:46:12,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 135 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-30 22:46:12,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2023-03-30 22:46:12,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 895. [2023-03-30 22:46:12,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 875 states have (on average 1.3862857142857143) internal successors, (1213), 883 states have internal predecessors, (1213), 6 states have call successors, (6), 6 states have call predecessors, (6), 13 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2023-03-30 22:46:12,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1246 transitions. [2023-03-30 22:46:12,679 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1246 transitions. Word has length 216 [2023-03-30 22:46:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:46:12,679 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1246 transitions. [2023-03-30 22:46:12,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 35.0) internal successors, (210), 4 states have internal predecessors, (210), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 22:46:12,679 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1246 transitions. [2023-03-30 22:46:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-03-30 22:46:12,682 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:46:12,682 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 22:46:12,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 22:46:12,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:46:12,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:46:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2114121439, now seen corresponding path program 1 times [2023-03-30 22:46:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:46:12,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395278620] [2023-03-30 22:46:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:12,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:46:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:46:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:46:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:46:13,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:46:13,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395278620] [2023-03-30 22:46:13,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395278620] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:46:13,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025796617] [2023-03-30 22:46:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:13,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:46:13,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:46:13,139 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:46:13,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 22:46:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:13,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 22:46:13,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:46:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-30 22:46:13,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:46:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-30 22:46:13,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025796617] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-30 22:46:13,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-30 22:46:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2023-03-30 22:46:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991992948] [2023-03-30 22:46:13,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:46:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 22:46:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:46:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 22:46:13,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-03-30 22:46:13,919 INFO L87 Difference]: Start difference. First operand 895 states and 1246 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 22:46:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:46:14,580 INFO L93 Difference]: Finished difference Result 2658 states and 3760 transitions. [2023-03-30 22:46:14,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-30 22:46:14,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 218 [2023-03-30 22:46:14,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:46:14,588 INFO L225 Difference]: With dead ends: 2658 [2023-03-30 22:46:14,588 INFO L226 Difference]: Without dead ends: 1769 [2023-03-30 22:46:14,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 434 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-03-30 22:46:14,591 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 389 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 22:46:14,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 121 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 22:46:14,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2023-03-30 22:46:14,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1768. [2023-03-30 22:46:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1725 states have (on average 1.328695652173913) internal successors, (2292), 1748 states have internal predecessors, (2292), 10 states have call successors, (10), 10 states have call predecessors, (10), 32 states have return successors, (101), 9 states have call predecessors, (101), 9 states have call successors, (101) [2023-03-30 22:46:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2403 transitions. [2023-03-30 22:46:14,643 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2403 transitions. Word has length 218 [2023-03-30 22:46:14,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:46:14,643 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2403 transitions. [2023-03-30 22:46:14,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 22:46:14,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2403 transitions. [2023-03-30 22:46:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-03-30 22:46:14,649 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:46:14,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2023-03-30 22:46:14,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 22:46:14,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:46:14,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:46:14,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:46:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1612263919, now seen corresponding path program 1 times [2023-03-30 22:46:14,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:46:14,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227229463] [2023-03-30 22:46:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:14,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:46:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:46:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:46:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-03-30 22:46:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 22:46:15,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:46:15,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227229463] [2023-03-30 22:46:15,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227229463] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:46:15,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498815817] [2023-03-30 22:46:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:15,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:46:15,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:46:15,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:46:15,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 22:46:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:15,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 22:46:15,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:46:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-30 22:46:15,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:46:15,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498815817] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:46:15,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:46:15,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-03-30 22:46:15,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225474900] [2023-03-30 22:46:15,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:46:15,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 22:46:15,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:46:15,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 22:46:15,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-30 22:46:15,564 INFO L87 Difference]: Start difference. First operand 1768 states and 2403 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 22:46:15,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:46:15,855 INFO L93 Difference]: Finished difference Result 5349 states and 7488 transitions. [2023-03-30 22:46:15,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-30 22:46:15,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 237 [2023-03-30 22:46:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:46:15,868 INFO L225 Difference]: With dead ends: 5349 [2023-03-30 22:46:15,868 INFO L226 Difference]: Without dead ends: 3587 [2023-03-30 22:46:15,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-03-30 22:46:15,873 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1079 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-30 22:46:15,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 917 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-30 22:46:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2023-03-30 22:46:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3548. [2023-03-30 22:46:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3452 states have (on average 1.3270567786790266) internal successors, (4581), 3512 states have internal predecessors, (4581), 18 states have call successors, (18), 18 states have call predecessors, (18), 77 states have return successors, (289), 17 states have call predecessors, (289), 17 states have call successors, (289) [2023-03-30 22:46:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4888 transitions. [2023-03-30 22:46:15,981 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4888 transitions. Word has length 237 [2023-03-30 22:46:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:46:15,981 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 4888 transitions. [2023-03-30 22:46:15,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 22:46:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4888 transitions. [2023-03-30 22:46:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-03-30 22:46:15,989 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:46:15,989 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2023-03-30 22:46:16,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 22:46:16,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-03-30 22:46:16,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:46:16,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:46:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1735214133, now seen corresponding path program 1 times [2023-03-30 22:46:16,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:46:16,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012144251] [2023-03-30 22:46:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:46:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:46:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:16,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:46:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-03-30 22:46:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 22:46:16,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:46:16,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012144251] [2023-03-30 22:46:16,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012144251] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:46:16,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76019759] [2023-03-30 22:46:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:16,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:46:16,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:46:16,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:46:16,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 22:46:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:17,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:46:17,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:46:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:46:17,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:46:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:46:17,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76019759] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:46:17,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:46:17,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-03-30 22:46:17,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993478919] [2023-03-30 22:46:17,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:46:17,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-30 22:46:17,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:46:17,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-30 22:46:17,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-03-30 22:46:17,225 INFO L87 Difference]: Start difference. First operand 3548 states and 4888 transitions. Second operand has 13 states, 13 states have (on average 19.384615384615383) internal successors, (252), 11 states have internal predecessors, (252), 5 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 22:46:23,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:46:23,118 INFO L93 Difference]: Finished difference Result 17719 states and 27508 transitions. [2023-03-30 22:46:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-03-30 22:46:23,119 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.384615384615383) internal successors, (252), 11 states have internal predecessors, (252), 5 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 239 [2023-03-30 22:46:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:46:23,174 INFO L225 Difference]: With dead ends: 17719 [2023-03-30 22:46:23,174 INFO L226 Difference]: Without dead ends: 14177 [2023-03-30 22:46:23,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=383, Invalid=1509, Unknown=0, NotChecked=0, Total=1892 [2023-03-30 22:46:23,186 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 4720 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 5278 mSolverCounterSat, 1021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4725 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 6299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1021 IncrementalHoareTripleChecker+Valid, 5278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:46:23,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4725 Valid, 264 Invalid, 6299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1021 Valid, 5278 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-03-30 22:46:23,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14177 states. [2023-03-30 22:46:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14177 to 14115. [2023-03-30 22:46:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14115 states, 13682 states have (on average 1.2092530331822833) internal successors, (16545), 13919 states have internal predecessors, (16545), 130 states have call successors, (130), 66 states have call predecessors, (130), 302 states have return successors, (3353), 129 states have call predecessors, (3353), 129 states have call successors, (3353) [2023-03-30 22:46:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14115 states to 14115 states and 20028 transitions. [2023-03-30 22:46:23,631 INFO L78 Accepts]: Start accepts. Automaton has 14115 states and 20028 transitions. Word has length 239 [2023-03-30 22:46:23,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:46:23,632 INFO L495 AbstractCegarLoop]: Abstraction has 14115 states and 20028 transitions. [2023-03-30 22:46:23,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.384615384615383) internal successors, (252), 11 states have internal predecessors, (252), 5 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 22:46:23,633 INFO L276 IsEmpty]: Start isEmpty. Operand 14115 states and 20028 transitions. [2023-03-30 22:46:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-03-30 22:46:23,680 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:46:23,681 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:46:23,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 22:46:23,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:46:23,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:46:23,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:46:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1507906272, now seen corresponding path program 1 times [2023-03-30 22:46:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:46:23,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036124592] [2023-03-30 22:46:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:23,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:46:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:24,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:46:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:24,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:46:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-03-30 22:46:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 22:46:24,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:46:24,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036124592] [2023-03-30 22:46:24,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036124592] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:46:24,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853247836] [2023-03-30 22:46:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:24,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:46:24,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:46:24,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:46:24,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 22:46:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:24,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-30 22:46:24,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:46:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-03-30 22:46:25,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:46:25,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853247836] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:46:25,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:46:25,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-03-30 22:46:25,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62426178] [2023-03-30 22:46:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:46:25,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:46:25,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:46:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:46:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-03-30 22:46:25,215 INFO L87 Difference]: Start difference. First operand 14115 states and 20028 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 22:46:26,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:46:26,214 INFO L93 Difference]: Finished difference Result 40630 states and 59692 transitions. [2023-03-30 22:46:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:46:26,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 273 [2023-03-30 22:46:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:46:26,326 INFO L225 Difference]: With dead ends: 40630 [2023-03-30 22:46:26,326 INFO L226 Difference]: Without dead ends: 26521 [2023-03-30 22:46:26,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-03-30 22:46:26,382 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 61 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 22:46:26,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 380 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 22:46:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26521 states. [2023-03-30 22:46:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26521 to 26501. [2023-03-30 22:46:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26501 states, 25814 states have (on average 1.1845122801580539) internal successors, (30577), 26141 states have internal predecessors, (30577), 236 states have call successors, (236), 124 states have call predecessors, (236), 450 states have return successors, (6949), 235 states have call predecessors, (6949), 235 states have call successors, (6949) [2023-03-30 22:46:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26501 states to 26501 states and 37762 transitions. [2023-03-30 22:46:27,304 INFO L78 Accepts]: Start accepts. Automaton has 26501 states and 37762 transitions. Word has length 273 [2023-03-30 22:46:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:46:27,304 INFO L495 AbstractCegarLoop]: Abstraction has 26501 states and 37762 transitions. [2023-03-30 22:46:27,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 22:46:27,305 INFO L276 IsEmpty]: Start isEmpty. Operand 26501 states and 37762 transitions. [2023-03-30 22:46:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-03-30 22:46:27,378 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:46:27,378 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-03-30 22:46:27,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 22:46:27,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:46:27,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:46:27,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:46:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1334852108, now seen corresponding path program 1 times [2023-03-30 22:46:27,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:46:27,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183431795] [2023-03-30 22:46:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:27,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:46:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:46:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:46:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:28,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-03-30 22:46:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:28,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-30 22:46:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 79 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-03-30 22:46:28,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:46:28,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183431795] [2023-03-30 22:46:28,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183431795] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:46:28,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103936297] [2023-03-30 22:46:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:28,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:46:28,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:46:28,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:46:28,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 22:46:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:28,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 22:46:28,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:46:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 80 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-03-30 22:46:28,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:46:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-03-30 22:46:29,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103936297] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:46:29,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:46:29,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-03-30 22:46:29,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237659833] [2023-03-30 22:46:29,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:46:29,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-30 22:46:29,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:46:29,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-30 22:46:29,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-03-30 22:46:29,034 INFO L87 Difference]: Start difference. First operand 26501 states and 37762 transitions. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 8 states have internal predecessors, (492), 4 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 22:46:34,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:46:34,191 INFO L93 Difference]: Finished difference Result 82799 states and 137994 transitions. [2023-03-30 22:46:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-03-30 22:46:34,192 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 8 states have internal predecessors, (492), 4 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 275 [2023-03-30 22:46:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:46:34,467 INFO L225 Difference]: With dead ends: 82799 [2023-03-30 22:46:34,467 INFO L226 Difference]: Without dead ends: 56304 [2023-03-30 22:46:34,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 574 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=235, Invalid=821, Unknown=0, NotChecked=0, Total=1056 [2023-03-30 22:46:34,717 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 2204 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 4510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:46:34,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 328 Invalid, 4510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-03-30 22:46:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56304 states. [2023-03-30 22:46:36,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56304 to 53008. [2023-03-30 22:46:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53008 states, 51573 states have (on average 1.1519787485699882) internal successors, (59411), 52316 states have internal predecessors, (59411), 446 states have call successors, (446), 246 states have call predecessors, (446), 988 states have return successors, (12885), 445 states have call predecessors, (12885), 445 states have call successors, (12885) [2023-03-30 22:46:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53008 states to 53008 states and 72742 transitions. [2023-03-30 22:46:36,432 INFO L78 Accepts]: Start accepts. Automaton has 53008 states and 72742 transitions. Word has length 275 [2023-03-30 22:46:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:46:36,432 INFO L495 AbstractCegarLoop]: Abstraction has 53008 states and 72742 transitions. [2023-03-30 22:46:36,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 8 states have internal predecessors, (492), 4 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 22:46:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 53008 states and 72742 transitions. [2023-03-30 22:46:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-03-30 22:46:36,529 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:46:36,530 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-03-30 22:46:36,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 22:46:36,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:46:36,737 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:46:36,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:46:36,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1874189618, now seen corresponding path program 1 times [2023-03-30 22:46:36,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:46:36,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612732154] [2023-03-30 22:46:36,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:36,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:46:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:46:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:37,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:46:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:38,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-03-30 22:46:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:38,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-30 22:46:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-03-30 22:46:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 84 proven. 71 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-03-30 22:46:38,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:46:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612732154] [2023-03-30 22:46:38,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612732154] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:46:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416892649] [2023-03-30 22:46:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:46:38,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:46:38,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:46:38,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:46:38,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 22:46:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:46:38,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:46:38,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:46:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-03-30 22:46:38,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:46:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-03-30 22:46:38,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416892649] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:46:38,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:46:38,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-03-30 22:46:38,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762588351] [2023-03-30 22:46:38,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:46:38,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-30 22:46:38,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:46:38,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-30 22:46:38,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-03-30 22:46:38,742 INFO L87 Difference]: Start difference. First operand 53008 states and 72742 transitions. Second operand has 14 states, 14 states have (on average 22.857142857142858) internal successors, (320), 12 states have internal predecessors, (320), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-03-30 22:46:56,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:46:56,773 INFO L93 Difference]: Finished difference Result 199368 states and 365655 transitions. [2023-03-30 22:46:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2023-03-30 22:46:56,774 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.857142857142858) internal successors, (320), 12 states have internal predecessors, (320), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 296 [2023-03-30 22:46:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:46:58,054 INFO L225 Difference]: With dead ends: 199368 [2023-03-30 22:46:58,054 INFO L226 Difference]: Without dead ends: 146579 [2023-03-30 22:46:58,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 702 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8602 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2353, Invalid=19109, Unknown=0, NotChecked=0, Total=21462 [2023-03-30 22:46:58,209 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 3452 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 17327 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3459 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 18335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 17327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:46:58,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3459 Valid, 1194 Invalid, 18335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 17327 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-03-30 22:46:58,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146579 states. [2023-03-30 22:47:02,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146579 to 133183. [2023-03-30 22:47:03,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133183 states, 129242 states have (on average 1.1386004549604618) internal successors, (147155), 131590 states have internal predecessors, (147155), 980 states have call successors, (980), 613 states have call predecessors, (980), 2960 states have return successors, (28239), 979 states have call predecessors, (28239), 979 states have call successors, (28239) [2023-03-30 22:47:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133183 states to 133183 states and 176374 transitions. [2023-03-30 22:47:03,881 INFO L78 Accepts]: Start accepts. Automaton has 133183 states and 176374 transitions. Word has length 296 [2023-03-30 22:47:03,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:47:03,882 INFO L495 AbstractCegarLoop]: Abstraction has 133183 states and 176374 transitions. [2023-03-30 22:47:03,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.857142857142858) internal successors, (320), 12 states have internal predecessors, (320), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-03-30 22:47:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 133183 states and 176374 transitions. [2023-03-30 22:47:04,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-03-30 22:47:04,088 INFO L187 NwaCegarLoop]: Found error trace