/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:31:51,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:31:51,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:31:51,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:31:51,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 22:31:51,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 22:31:51,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 22:31:51,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 22:31:51,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 22:31:51,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 22:31:51,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 22:31:51,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 22:31:51,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 22:31:51,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 22:31:51,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 22:31:51,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 22:31:51,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 22:31:51,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:31:51,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:31:51,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:31:51,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:31:51,100 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:31:51,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:31:51,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:31:51,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:31:51,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:31:51,101 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:31:51,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:31:51,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:31:51,102 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:31:51,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:31:51,102 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:31:51,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:31:51,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:31:51,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:31:51,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:31:51,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:31:51,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:31:51,103 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:31:51,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:31:51,103 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:31:51,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:31:51,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:31:51,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:31:51,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:31:51,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:31:51,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:31:51,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:31:51,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:31:51,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:31:51,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:31:51,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:31:51,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:31:51,105 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:31:51,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:31:51,105 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:31:51,105 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:31:51,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:31:51,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:31:51,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:31:51,245 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:31:51,246 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:31:51,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label46.c [2023-04-01 22:31:52,293 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:31:52,655 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:31:52,655 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label46.c [2023-04-01 22:31:52,680 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b201b8a/b760c217600a43ba8a857ca2f48f706d/FLAG853d00a5b [2023-04-01 22:31:52,692 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b201b8a/b760c217600a43ba8a857ca2f48f706d [2023-04-01 22:31:52,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:31:52,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:31:52,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:31:52,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:31:52,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:31:52,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:31:52" (1/1) ... [2023-04-01 22:31:52,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc1ba98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:52, skipping insertion in model container [2023-04-01 22:31:52,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:31:52" (1/1) ... [2023-04-01 22:31:52,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:31:52,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:31:52,985 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label46.c[7526,7539] [2023-04-01 22:31:53,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:31:53,586 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:31:53,612 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label46.c[7526,7539] [2023-04-01 22:31:54,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:31:54,126 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:31:54,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54 WrapperNode [2023-04-01 22:31:54,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:31:54,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:31:54,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:31:54,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:31:54,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54" (1/1) ... [2023-04-01 22:31:54,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54" (1/1) ... [2023-04-01 22:31:54,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54" (1/1) ... [2023-04-01 22:31:54,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54" (1/1) ... [2023-04-01 22:31:54,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54" (1/1) ... [2023-04-01 22:31:54,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54" (1/1) ... [2023-04-01 22:31:54,294 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54" (1/1) ... [2023-04-01 22:31:54,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54" (1/1) ... [2023-04-01 22:31:54,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:31:54,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:31:54,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:31:54,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:31:54,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54" (1/1) ... [2023-04-01 22:31:54,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:31:54,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:54,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:31:54,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:31:54,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:31:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:31:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:31:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:31:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:31:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:31:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:31:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:31:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:31:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:31:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:31:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:31:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:31:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:31:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:31:54,498 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:31:54,517 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:31:57,350 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:31:57,360 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:31:57,360 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:31:57,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:31:57 BoogieIcfgContainer [2023-04-01 22:31:57,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:31:57,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:31:57,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:31:57,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:31:57,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:31:52" (1/3) ... [2023-04-01 22:31:57,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684deb31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:31:57, skipping insertion in model container [2023-04-01 22:31:57,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:31:54" (2/3) ... [2023-04-01 22:31:57,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684deb31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:31:57, skipping insertion in model container [2023-04-01 22:31:57,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:31:57" (3/3) ... [2023-04-01 22:31:57,368 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label46.c [2023-04-01 22:31:57,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:31:57,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:31:57,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:31:57,446 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;@61ca204, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:31:57,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:31:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:31:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 22:31:57,460 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:31:57,461 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] [2023-04-01 22:31:57,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:31:57,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:31:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash -429790264, now seen corresponding path program 1 times [2023-04-01 22:31:57,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:31:57,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579888158] [2023-04-01 22:31:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:57,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:31:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:57,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:31:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:31:57,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579888158] [2023-04-01 22:31:57,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579888158] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:31:57,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:31:57,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:31:57,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793148493] [2023-04-01 22:31:57,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:31:57,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:31:57,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:31:57,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:31:57,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:31:58,002 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:32:04,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:04,208 INFO L93 Difference]: Finished difference Result 3253 states and 6294 transitions. [2023-04-01 22:32:04,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:32:04,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 67 [2023-04-01 22:32:04,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:04,234 INFO L225 Difference]: With dead ends: 3253 [2023-04-01 22:32:04,234 INFO L226 Difference]: Without dead ends: 2346 [2023-04-01 22:32:04,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:32:04,284 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3961 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 4910 mSolverCounterSat, 1386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3961 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1386 IncrementalHoareTripleChecker+Valid, 4910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:04,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3961 Valid, 65 Invalid, 6296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1386 Valid, 4910 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 22:32:04,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2023-04-01 22:32:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2023-04-01 22:32:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2295 states have (on average 1.6226579520697169) internal successors, (3724), 2297 states have internal predecessors, (3724), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (49), 19 states have call predecessors, (49), 13 states have call successors, (49) [2023-04-01 22:32:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3787 transitions. [2023-04-01 22:32:04,408 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3787 transitions. Word has length 67 [2023-04-01 22:32:04,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:04,410 INFO L495 AbstractCegarLoop]: Abstraction has 2331 states and 3787 transitions. [2023-04-01 22:32:04,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:32:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3787 transitions. [2023-04-01 22:32:04,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-01 22:32:04,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:04,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:32:04,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:32:04,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:04,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:04,420 INFO L85 PathProgramCache]: Analyzing trace with hash 170594703, now seen corresponding path program 1 times [2023-04-01 22:32:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:04,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081141716] [2023-04-01 22:32:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 56 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:04,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:04,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081141716] [2023-04-01 22:32:04,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081141716] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:32:04,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990583867] [2023-04-01 22:32:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:04,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:32:04,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:32:04,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:32:04,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:32:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:04,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:32:04,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:32:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:05,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:32:05,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990583867] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:32:05,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:32:05,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 22:32:05,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647121058] [2023-04-01 22:32:05,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:32:05,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:32:05,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:05,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:32:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:32:05,039 INFO L87 Difference]: Start difference. First operand 2331 states and 3787 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:32:07,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:07,854 INFO L93 Difference]: Finished difference Result 6979 states and 11460 transitions. [2023-04-01 22:32:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:32:07,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 142 [2023-04-01 22:32:07,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:07,871 INFO L225 Difference]: With dead ends: 6979 [2023-04-01 22:32:07,872 INFO L226 Difference]: Without dead ends: 4654 [2023-04-01 22:32:07,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:32:07,876 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 719 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:07,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1217 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 22:32:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2023-04-01 22:32:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 4654. [2023-04-01 22:32:07,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 4586 states have (on average 1.5248582642825992) internal successors, (6993), 4590 states have internal predecessors, (6993), 26 states have call successors, (26), 26 states have call predecessors, (26), 41 states have return successors, (165), 37 states have call predecessors, (165), 25 states have call successors, (165) [2023-04-01 22:32:07,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 7184 transitions. [2023-04-01 22:32:07,972 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 7184 transitions. Word has length 142 [2023-04-01 22:32:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:07,973 INFO L495 AbstractCegarLoop]: Abstraction has 4654 states and 7184 transitions. [2023-04-01 22:32:07,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:32:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 7184 transitions. [2023-04-01 22:32:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-01 22:32:07,976 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:07,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:32:07,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 22:32:08,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:32:08,183 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:08,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1595122217, now seen corresponding path program 1 times [2023-04-01 22:32:08,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:08,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513366809] [2023-04-01 22:32:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:08,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:08,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:08,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513366809] [2023-04-01 22:32:08,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513366809] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:32:08,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:32:08,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:32:08,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931645198] [2023-04-01 22:32:08,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:32:08,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:32:08,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:08,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:32:08,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:32:08,476 INFO L87 Difference]: Start difference. First operand 4654 states and 7184 transitions. Second operand has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:32:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:13,356 INFO L93 Difference]: Finished difference Result 14200 states and 22515 transitions. [2023-04-01 22:32:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:32:13,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 146 [2023-04-01 22:32:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:13,387 INFO L225 Difference]: With dead ends: 14200 [2023-04-01 22:32:13,388 INFO L226 Difference]: Without dead ends: 9552 [2023-04-01 22:32:13,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:32:13,398 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3140 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5703 mSolverCounterSat, 938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 6641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 5703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:13,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3140 Valid, 118 Invalid, 6641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 5703 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-01 22:32:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9552 states. [2023-04-01 22:32:13,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9552 to 9439. [2023-04-01 22:32:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9439 states, 9254 states have (on average 1.3996109790360924) internal successors, (12952), 9282 states have internal predecessors, (12952), 50 states have call successors, (50), 50 states have call predecessors, (50), 134 states have return successors, (679), 106 states have call predecessors, (679), 49 states have call successors, (679) [2023-04-01 22:32:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9439 states to 9439 states and 13681 transitions. [2023-04-01 22:32:13,633 INFO L78 Accepts]: Start accepts. Automaton has 9439 states and 13681 transitions. Word has length 146 [2023-04-01 22:32:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:13,634 INFO L495 AbstractCegarLoop]: Abstraction has 9439 states and 13681 transitions. [2023-04-01 22:32:13,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:32:13,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9439 states and 13681 transitions. [2023-04-01 22:32:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-01 22:32:13,636 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:13,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:32:13,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:32:13,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:13,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:13,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1270665308, now seen corresponding path program 1 times [2023-04-01 22:32:13,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:13,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207368738] [2023-04-01 22:32:13,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:13,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:13,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:13,863 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:13,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:13,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207368738] [2023-04-01 22:32:13,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207368738] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:32:13,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:32:13,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:32:13,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747655469] [2023-04-01 22:32:13,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:32:13,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:32:13,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:13,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:32:13,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:32:13,865 INFO L87 Difference]: Start difference. First operand 9439 states and 13681 transitions. Second operand has 7 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:32:18,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:18,929 INFO L93 Difference]: Finished difference Result 29044 states and 44533 transitions. [2023-04-01 22:32:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:32:18,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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 157 [2023-04-01 22:32:18,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:18,987 INFO L225 Difference]: With dead ends: 29044 [2023-04-01 22:32:18,988 INFO L226 Difference]: Without dead ends: 19611 [2023-04-01 22:32:19,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:32:19,009 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2511 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 5777 mSolverCounterSat, 1139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 6916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1139 IncrementalHoareTripleChecker+Valid, 5777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:19,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2511 Valid, 126 Invalid, 6916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1139 Valid, 5777 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 22:32:19,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19611 states. [2023-04-01 22:32:19,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19611 to 19395. [2023-04-01 22:32:19,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19395 states, 18827 states have (on average 1.2678068731077707) internal successors, (23869), 18964 states have internal predecessors, (23869), 98 states have call successors, (98), 98 states have call predecessors, (98), 469 states have return successors, (2813), 332 states have call predecessors, (2813), 97 states have call successors, (2813) [2023-04-01 22:32:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19395 states to 19395 states and 26780 transitions. [2023-04-01 22:32:19,499 INFO L78 Accepts]: Start accepts. Automaton has 19395 states and 26780 transitions. Word has length 157 [2023-04-01 22:32:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:19,500 INFO L495 AbstractCegarLoop]: Abstraction has 19395 states and 26780 transitions. [2023-04-01 22:32:19,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:32:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 19395 states and 26780 transitions. [2023-04-01 22:32:19,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-01 22:32:19,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:19,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:32:19,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:32:19,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:19,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1714319931, now seen corresponding path program 1 times [2023-04-01 22:32:19,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:19,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651637156] [2023-04-01 22:32:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:19,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:19,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651637156] [2023-04-01 22:32:19,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651637156] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:32:19,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:32:19,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:32:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463392728] [2023-04-01 22:32:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:32:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:32:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:19,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:32:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:32:19,765 INFO L87 Difference]: Start difference. First operand 19395 states and 26780 transitions. Second operand has 8 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:32:26,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:26,550 INFO L93 Difference]: Finished difference Result 72141 states and 106498 transitions. [2023-04-01 22:32:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:32:26,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 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 180 [2023-04-01 22:32:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:26,699 INFO L225 Difference]: With dead ends: 72141 [2023-04-01 22:32:26,699 INFO L226 Difference]: Without dead ends: 52752 [2023-04-01 22:32:26,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:32:26,738 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 5128 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 7534 mSolverCounterSat, 1863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5128 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 9397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1863 IncrementalHoareTripleChecker+Valid, 7534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:26,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5128 Valid, 160 Invalid, 9397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1863 Valid, 7534 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 22:32:26,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52752 states. [2023-04-01 22:32:27,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52752 to 48858. [2023-04-01 22:32:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48858 states, 47576 states have (on average 1.20997982175887) internal successors, (57566), 47883 states have internal predecessors, (57566), 246 states have call successors, (246), 246 states have call predecessors, (246), 1035 states have return successors, (9526), 728 states have call predecessors, (9526), 245 states have call successors, (9526) [2023-04-01 22:32:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48858 states to 48858 states and 67338 transitions. [2023-04-01 22:32:27,696 INFO L78 Accepts]: Start accepts. Automaton has 48858 states and 67338 transitions. Word has length 180 [2023-04-01 22:32:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:27,697 INFO L495 AbstractCegarLoop]: Abstraction has 48858 states and 67338 transitions. [2023-04-01 22:32:27,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:32:27,697 INFO L276 IsEmpty]: Start isEmpty. Operand 48858 states and 67338 transitions. [2023-04-01 22:32:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-04-01 22:32:27,698 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:27,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:32:27,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 22:32:27,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:27,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:27,699 INFO L85 PathProgramCache]: Analyzing trace with hash -235999824, now seen corresponding path program 1 times [2023-04-01 22:32:27,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:27,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59092229] [2023-04-01 22:32:27,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:27,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:27,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:27,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:27,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:27,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59092229] [2023-04-01 22:32:27,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59092229] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:32:27,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198324913] [2023-04-01 22:32:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:27,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:32:27,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:32:27,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:32:27,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:32:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:28,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:32:28,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:32:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:28,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:32:28,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198324913] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:32:28,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:32:28,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:32:28,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602550359] [2023-04-01 22:32:28,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:32:28,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:32:28,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:28,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:32:28,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:32:28,114 INFO L87 Difference]: Start difference. First operand 48858 states and 67338 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:32:31,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:31,600 INFO L93 Difference]: Finished difference Result 119580 states and 169332 transitions. [2023-04-01 22:32:31,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:32:31,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 215 [2023-04-01 22:32:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:31,855 INFO L225 Difference]: With dead ends: 119580 [2023-04-01 22:32:31,855 INFO L226 Difference]: Without dead ends: 70728 [2023-04-01 22:32:31,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:32:31,912 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 764 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 972 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 972 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:31,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 162 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [972 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:32:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70728 states. [2023-04-01 22:32:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70728 to 66096. [2023-04-01 22:32:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66096 states, 64494 states have (on average 1.2269978602660712) internal successors, (79134), 64869 states have internal predecessors, (79134), 334 states have call successors, (334), 334 states have call predecessors, (334), 1267 states have return successors, (15858), 892 states have call predecessors, (15858), 333 states have call successors, (15858) [2023-04-01 22:32:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66096 states to 66096 states and 95326 transitions. [2023-04-01 22:32:33,355 INFO L78 Accepts]: Start accepts. Automaton has 66096 states and 95326 transitions. Word has length 215 [2023-04-01 22:32:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:33,356 INFO L495 AbstractCegarLoop]: Abstraction has 66096 states and 95326 transitions. [2023-04-01 22:32:33,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:32:33,356 INFO L276 IsEmpty]: Start isEmpty. Operand 66096 states and 95326 transitions. [2023-04-01 22:32:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-04-01 22:32:33,360 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:33,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:32:33,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 22:32:33,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 22:32:33,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:33,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash 570185551, now seen corresponding path program 1 times [2023-04-01 22:32:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:33,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801055669] [2023-04-01 22:32:33,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:33,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:34,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:32:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:32:34,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801055669] [2023-04-01 22:32:34,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801055669] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:32:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309685628] [2023-04-01 22:32:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:34,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:32:34,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:32:34,153 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:32:34,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:32:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:34,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:32:34,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:32:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:34,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:32:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:34,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309685628] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:32:34,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:32:34,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:32:34,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86686846] [2023-04-01 22:32:34,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:32:34,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:32:34,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:34,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:32:34,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:32:34,772 INFO L87 Difference]: Start difference. First operand 66096 states and 95326 transitions. Second operand has 12 states, 12 states have (on average 39.583333333333336) internal successors, (475), 10 states have internal predecessors, (475), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:32:43,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:43,874 INFO L93 Difference]: Finished difference Result 137136 states and 200993 transitions. [2023-04-01 22:32:43,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 22:32:43,875 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 39.583333333333336) internal successors, (475), 10 states have internal predecessors, (475), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 302 [2023-04-01 22:32:43,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:44,101 INFO L225 Difference]: With dead ends: 137136 [2023-04-01 22:32:44,102 INFO L226 Difference]: Without dead ends: 71046 [2023-04-01 22:32:44,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 606 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-01 22:32:44,285 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 3300 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 14612 mSolverCounterSat, 1522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3300 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 16134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1522 IncrementalHoareTripleChecker+Valid, 14612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:44,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3300 Valid, 270 Invalid, 16134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1522 Valid, 14612 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-04-01 22:32:44,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71046 states. [2023-04-01 22:32:45,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71046 to 70857. [2023-04-01 22:32:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70857 states, 68853 states have (on average 1.1842185525685156) internal successors, (81537), 69388 states have internal predecessors, (81537), 354 states have call successors, (354), 354 states have call predecessors, (354), 1649 states have return successors, (15341), 1114 states have call predecessors, (15341), 353 states have call successors, (15341) [2023-04-01 22:32:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70857 states to 70857 states and 97232 transitions. [2023-04-01 22:32:45,554 INFO L78 Accepts]: Start accepts. Automaton has 70857 states and 97232 transitions. Word has length 302 [2023-04-01 22:32:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:45,554 INFO L495 AbstractCegarLoop]: Abstraction has 70857 states and 97232 transitions. [2023-04-01 22:32:45,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 39.583333333333336) internal successors, (475), 10 states have internal predecessors, (475), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:32:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 70857 states and 97232 transitions. [2023-04-01 22:32:45,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-04-01 22:32:45,559 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:45,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:32:45,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:32:45,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:32:45,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:45,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:45,783 INFO L85 PathProgramCache]: Analyzing trace with hash 114379159, now seen corresponding path program 1 times [2023-04-01 22:32:45,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:45,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053748827] [2023-04-01 22:32:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:45,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:46,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:46,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:32:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 118 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-01 22:32:46,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:46,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053748827] [2023-04-01 22:32:46,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053748827] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:32:46,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303037779] [2023-04-01 22:32:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:46,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:32:46,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:32:46,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:32:46,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:32:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:46,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:32:46,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:32:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-04-01 22:32:46,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:32:46,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303037779] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:32:46,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:32:46,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 22:32:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275361457] [2023-04-01 22:32:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:32:46,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:32:46,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:32:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:32:46,576 INFO L87 Difference]: Start difference. First operand 70857 states and 97232 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:32:50,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:50,236 INFO L93 Difference]: Finished difference Result 175173 states and 249911 transitions. [2023-04-01 22:32:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:32:50,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 306 [2023-04-01 22:32:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:50,722 INFO L225 Difference]: With dead ends: 175173 [2023-04-01 22:32:50,722 INFO L226 Difference]: Without dead ends: 104322 [2023-04-01 22:32:50,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:32:50,793 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 747 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 3025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:50,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 616 Invalid, 3025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 22:32:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104322 states. [2023-04-01 22:32:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104322 to 103549. [2023-04-01 22:32:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103549 states, 101018 states have (on average 1.1790769961788987) internal successors, (119108), 101648 states have internal predecessors, (119108), 522 states have call successors, (522), 522 states have call predecessors, (522), 2008 states have return successors, (25462), 1378 states have call predecessors, (25462), 521 states have call successors, (25462) [2023-04-01 22:32:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103549 states to 103549 states and 145092 transitions. [2023-04-01 22:32:53,092 INFO L78 Accepts]: Start accepts. Automaton has 103549 states and 145092 transitions. Word has length 306 [2023-04-01 22:32:53,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:53,092 INFO L495 AbstractCegarLoop]: Abstraction has 103549 states and 145092 transitions. [2023-04-01 22:32:53,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:32:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 103549 states and 145092 transitions. [2023-04-01 22:32:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-04-01 22:32:53,124 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:53,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:32:53,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 22:32:53,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:32:53,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:53,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:53,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1727713295, now seen corresponding path program 1 times [2023-04-01 22:32:53,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:53,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386799744] [2023-04-01 22:32:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:53,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:53,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:53,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:53,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:32:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:32:53,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:53,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386799744] [2023-04-01 22:32:53,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386799744] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:32:53,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864141729] [2023-04-01 22:32:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:53,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:32:53,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:32:53,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:32:53,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:32:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:53,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:32:53,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:32:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:53,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:32:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:32:54,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864141729] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:32:54,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:32:54,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:32:54,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181322550] [2023-04-01 22:32:54,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:32:54,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:32:54,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:54,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:32:54,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:32:54,286 INFO L87 Difference]: Start difference. First operand 103549 states and 145092 transitions. Second operand has 11 states, 11 states have (on average 44.36363636363637) internal successors, (488), 9 states have internal predecessors, (488), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:33:02,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:02,061 INFO L93 Difference]: Finished difference Result 235419 states and 346944 transitions. [2023-04-01 22:33:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:33:02,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 44.36363636363637) internal successors, (488), 9 states have internal predecessors, (488), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 310 [2023-04-01 22:33:02,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:02,701 INFO L225 Difference]: With dead ends: 235419 [2023-04-01 22:33:02,701 INFO L226 Difference]: Without dead ends: 131876 [2023-04-01 22:33:02,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 625 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:33:02,830 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3657 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 10322 mSolverCounterSat, 2023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3663 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 12345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2023 IncrementalHoareTripleChecker+Valid, 10322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:02,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3663 Valid, 202 Invalid, 12345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2023 Valid, 10322 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 22:33:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131876 states. [2023-04-01 22:33:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131876 to 127695. [2023-04-01 22:33:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127695 states, 124472 states have (on average 1.1189183109454335) internal successors, (139274), 125323 states have internal predecessors, (139274), 643 states have call successors, (643), 642 states have call predecessors, (643), 2579 states have return successors, (23327), 1729 states have call predecessors, (23327), 642 states have call successors, (23327) [2023-04-01 22:33:05,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127695 states to 127695 states and 163244 transitions. [2023-04-01 22:33:05,510 INFO L78 Accepts]: Start accepts. Automaton has 127695 states and 163244 transitions. Word has length 310 [2023-04-01 22:33:05,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:05,511 INFO L495 AbstractCegarLoop]: Abstraction has 127695 states and 163244 transitions. [2023-04-01 22:33:05,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 44.36363636363637) internal successors, (488), 9 states have internal predecessors, (488), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:33:05,511 INFO L276 IsEmpty]: Start isEmpty. Operand 127695 states and 163244 transitions. [2023-04-01 22:33:05,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-04-01 22:33:05,517 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:05,518 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:33:05,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:33:05,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:05,722 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:05,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash 107653680, now seen corresponding path program 1 times [2023-04-01 22:33:05,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:05,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397531173] [2023-04-01 22:33:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:06,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:33:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 118 proven. 8 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-04-01 22:33:06,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:06,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397531173] [2023-04-01 22:33:06,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397531173] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:06,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107147836] [2023-04-01 22:33:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:06,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:06,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:06,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:33:06,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:33:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:06,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:33:06,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-01 22:33:06,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:33:06,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107147836] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:06,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:33:06,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 22:33:06,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801817327] [2023-04-01 22:33:06,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:06,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:33:06,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:33:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:33:06,535 INFO L87 Difference]: Start difference. First operand 127695 states and 163244 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:33:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:10,528 INFO L93 Difference]: Finished difference Result 291521 states and 376188 transitions. [2023-04-01 22:33:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:33:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 337 [2023-04-01 22:33:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:10,973 INFO L225 Difference]: With dead ends: 291521 [2023-04-01 22:33:10,973 INFO L226 Difference]: Without dead ends: 163836 [2023-04-01 22:33:11,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:33:11,166 INFO L413 NwaCegarLoop]: 1314 mSDtfsCounter, 729 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:11,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1346 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:33:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163836 states. [2023-04-01 22:33:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163836 to 161533. [2023-04-01 22:33:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161533 states, 157922 states have (on average 1.0795835918997987) internal successors, (170490), 158791 states have internal predecessors, (170490), 819 states have call successors, (819), 818 states have call predecessors, (819), 2791 states have return successors, (21209), 1923 states have call predecessors, (21209), 818 states have call successors, (21209) [2023-04-01 22:33:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161533 states to 161533 states and 192518 transitions. [2023-04-01 22:33:13,852 INFO L78 Accepts]: Start accepts. Automaton has 161533 states and 192518 transitions. Word has length 337 [2023-04-01 22:33:13,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:13,853 INFO L495 AbstractCegarLoop]: Abstraction has 161533 states and 192518 transitions. [2023-04-01 22:33:13,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:33:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 161533 states and 192518 transitions. [2023-04-01 22:33:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-04-01 22:33:13,867 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:13,867 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:33:13,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:33:14,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:14,072 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:14,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:14,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1423852196, now seen corresponding path program 1 times [2023-04-01 22:33:14,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:14,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030853252] [2023-04-01 22:33:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:14,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:14,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:33:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:14,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:33:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 186 proven. 3 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-04-01 22:33:14,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:14,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030853252] [2023-04-01 22:33:14,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030853252] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:14,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497097813] [2023-04-01 22:33:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:14,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:14,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:14,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:33:14,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:33:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:14,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:33:14,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:33:14,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:33:14,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497097813] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:14,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:33:14,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:33:14,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943907806] [2023-04-01 22:33:14,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:14,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:33:14,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:14,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:33:14,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:33:14,887 INFO L87 Difference]: Start difference. First operand 161533 states and 192518 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:33:18,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:18,687 INFO L93 Difference]: Finished difference Result 339084 states and 407517 transitions. [2023-04-01 22:33:18,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:33:18,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 447 [2023-04-01 22:33:18,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:19,128 INFO L225 Difference]: With dead ends: 339084 [2023-04-01 22:33:19,129 INFO L226 Difference]: Without dead ends: 177561 [2023-04-01 22:33:19,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:33:19,383 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 826 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:19,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1181 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 22:33:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177561 states. [2023-04-01 22:33:21,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177561 to 176792. [2023-04-01 22:33:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176792 states, 173050 states have (on average 1.0749436579023404) internal successors, (186019), 173913 states have internal predecessors, (186019), 899 states have call successors, (899), 898 states have call predecessors, (899), 2842 states have return successors, (21985), 1980 states have call predecessors, (21985), 898 states have call successors, (21985) [2023-04-01 22:33:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176792 states to 176792 states and 208903 transitions. [2023-04-01 22:33:22,429 INFO L78 Accepts]: Start accepts. Automaton has 176792 states and 208903 transitions. Word has length 447 [2023-04-01 22:33:22,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:22,430 INFO L495 AbstractCegarLoop]: Abstraction has 176792 states and 208903 transitions. [2023-04-01 22:33:22,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:33:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand 176792 states and 208903 transitions. [2023-04-01 22:33:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-04-01 22:33:22,444 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:22,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:33:22,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:33:22,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:22,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:22,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:22,662 INFO L85 PathProgramCache]: Analyzing trace with hash -256145173, now seen corresponding path program 1 times [2023-04-01 22:33:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:22,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949705892] [2023-04-01 22:33:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:22,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:23,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:33:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 118 proven. 8 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-04-01 22:33:23,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:23,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949705892] [2023-04-01 22:33:23,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949705892] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:23,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185599632] [2023-04-01 22:33:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:23,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:23,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:23,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:33:23,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:33:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:23,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:33:23,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-04-01 22:33:23,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:33:23,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185599632] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:23,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:33:23,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 22:33:23,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563804760] [2023-04-01 22:33:23,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:23,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:33:23,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:23,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:33:23,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:33:23,507 INFO L87 Difference]: Start difference. First operand 176792 states and 208903 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:33:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:27,161 INFO L93 Difference]: Finished difference Result 353574 states and 418117 transitions. [2023-04-01 22:33:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:33:27,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 460 [2023-04-01 22:33:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:27,634 INFO L225 Difference]: With dead ends: 353574 [2023-04-01 22:33:27,635 INFO L226 Difference]: Without dead ends: 176792 [2023-04-01 22:33:27,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:33:27,913 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 779 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:27,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1088 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 22:33:28,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176792 states. [2023-04-01 22:33:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176792 to 176768. [2023-04-01 22:33:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176768 states, 173035 states have (on average 1.061519345797093) internal successors, (183680), 173895 states have internal predecessors, (183680), 899 states have call successors, (899), 898 states have call predecessors, (899), 2833 states have return successors, (18804), 1974 states have call predecessors, (18804), 898 states have call successors, (18804) [2023-04-01 22:33:30,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176768 states to 176768 states and 203383 transitions. [2023-04-01 22:33:30,786 INFO L78 Accepts]: Start accepts. Automaton has 176768 states and 203383 transitions. Word has length 460 [2023-04-01 22:33:30,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:30,800 INFO L495 AbstractCegarLoop]: Abstraction has 176768 states and 203383 transitions. [2023-04-01 22:33:30,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:33:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 176768 states and 203383 transitions. [2023-04-01 22:33:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-04-01 22:33:30,851 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:30,851 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:33:30,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:33:31,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 22:33:31,052 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:31,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:31,053 INFO L85 PathProgramCache]: Analyzing trace with hash -905905317, now seen corresponding path program 1 times [2023-04-01 22:33:31,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:31,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823045968] [2023-04-01 22:33:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:31,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:33:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:33:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 400 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:33:33,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:33,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823045968] [2023-04-01 22:33:33,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823045968] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:33,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942430431] [2023-04-01 22:33:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:33,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:33,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:33,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:33:33,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:33:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:33,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:33:33,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:33:33,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:33:33,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942430431] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:33,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:33:33,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 22:33:33,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815230550] [2023-04-01 22:33:33,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:33,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:33:33,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:33,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:33:33,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:33:33,866 INFO L87 Difference]: Start difference. First operand 176768 states and 203383 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:33:37,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:37,606 INFO L93 Difference]: Finished difference Result 381992 states and 440204 transitions. [2023-04-01 22:33:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:33:37,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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 556 [2023-04-01 22:33:37,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:37,608 INFO L225 Difference]: With dead ends: 381992 [2023-04-01 22:33:37,608 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 22:33:37,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:33:37,947 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 758 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:37,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1410 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 22:33:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 22:33:37,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 22:33:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 22:33:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 22:33:37,949 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 556 [2023-04-01 22:33:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:37,949 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 22:33:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:33:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 22:33:37,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 22:33:37,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 22:33:37,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 22:33:38,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:33:38,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.