/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/Problem19_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:53:02,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:53:02,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:53:02,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:53:02,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:53:02,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:53:02,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:53:02,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:53:02,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:53:02,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:53:02,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:53:02,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:53:02,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:53:02,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:53:02,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:53:02,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:53:02,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 23:53:02,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:53:02,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:53:02,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:53:02,208 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 23:53:02,232 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:53:02,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:53:02,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:53:02,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:53:02,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:53:02,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:53:02,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:53:02,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:53:02,235 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:53:02,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:53:02,235 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:53:02,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:53:02,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:53:02,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:53:02,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:53:02,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:53:02,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:53:02,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:53:02,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:53:02,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:53:02,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:53:02,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:53:02,238 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:53:02,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:53:02,238 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:53:02,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:53:02,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:53:02,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:53:02,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:53:02,441 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:53:02,441 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:53:02,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label15.c [2023-04-01 23:53:03,436 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:53:03,920 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:53:03,920 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label15.c [2023-04-01 23:53:03,957 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/398f46fab/9c3981a0aeed40219db511c9fa61a00e/FLAGb50f54f49 [2023-04-01 23:53:03,971 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/398f46fab/9c3981a0aeed40219db511c9fa61a00e [2023-04-01 23:53:03,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:53:03,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:53:03,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:53:03,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:53:03,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:53:03,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:53:03" (1/1) ... [2023-04-01 23:53:03,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c53b01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:03, skipping insertion in model container [2023-04-01 23:53:03,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:53:03" (1/1) ... [2023-04-01 23:53:03,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:53:04,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:53:04,368 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/Problem19_label15.c[7551,7564] [2023-04-01 23:53:05,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:53:05,245 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:53:05,271 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/Problem19_label15.c[7551,7564] [2023-04-01 23:53:05,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:53:05,783 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:53:05,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05 WrapperNode [2023-04-01 23:53:05,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:53:05,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:53:05,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:53:05,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:53:05,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05" (1/1) ... [2023-04-01 23:53:05,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05" (1/1) ... [2023-04-01 23:53:05,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05" (1/1) ... [2023-04-01 23:53:05,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05" (1/1) ... [2023-04-01 23:53:06,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05" (1/1) ... [2023-04-01 23:53:06,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05" (1/1) ... [2023-04-01 23:53:06,091 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05" (1/1) ... [2023-04-01 23:53:06,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05" (1/1) ... [2023-04-01 23:53:06,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:53:06,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:53:06,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:53:06,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:53:06,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05" (1/1) ... [2023-04-01 23:53:06,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:53:06,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:53:06,168 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 23:53:06,202 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 23:53:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:53:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:53:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:53:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:53:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:53:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:53:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 23:53:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 23:53:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 23:53:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:53:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:53:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:53:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:53:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:53:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:53:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:53:06,287 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:53:06,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:53:12,249 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:53:12,274 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:53:12,275 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:53:12,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:53:12 BoogieIcfgContainer [2023-04-01 23:53:12,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:53:12,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:53:12,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:53:12,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:53:12,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:53:03" (1/3) ... [2023-04-01 23:53:12,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab73589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:53:12, skipping insertion in model container [2023-04-01 23:53:12,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:53:05" (2/3) ... [2023-04-01 23:53:12,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab73589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:53:12, skipping insertion in model container [2023-04-01 23:53:12,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:53:12" (3/3) ... [2023-04-01 23:53:12,283 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label15.c [2023-04-01 23:53:12,294 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:53:12,294 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:53:12,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:53:12,348 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;@4653cf20, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:53:12,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:53:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-01 23:53:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-01 23:53:12,361 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:53:12,362 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] [2023-04-01 23:53:12,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:53:12,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:53:12,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1178841908, now seen corresponding path program 1 times [2023-04-01 23:53:12,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:53:12,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122325540] [2023-04-01 23:53:12,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:53:12,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:53:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:53:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:12,781 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 23:53:12,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:53:12,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122325540] [2023-04-01 23:53:12,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122325540] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:53:12,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:53:12,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:53:12,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229164442] [2023-04-01 23:53:12,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:53:12,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:53:12,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:53:12,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:53:12,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:53:12,833 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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 23:53:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:53:22,171 INFO L93 Difference]: Finished difference Result 5076 states and 9543 transitions. [2023-04-01 23:53:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:53:22,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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 64 [2023-04-01 23:53:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:53:22,206 INFO L225 Difference]: With dead ends: 5076 [2023-04-01 23:53:22,206 INFO L226 Difference]: Without dead ends: 3219 [2023-04-01 23:53:22,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:53:22,221 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 4630 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 1544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 8871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1544 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:53:22,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4630 Valid, 384 Invalid, 8871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1544 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-04-01 23:53:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2023-04-01 23:53:22,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3194. [2023-04-01 23:53:22,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3154 states have (on average 1.592263792010146) internal successors, (5022), 3156 states have internal predecessors, (5022), 14 states have call successors, (14), 14 states have call predecessors, (14), 25 states have return successors, (37), 23 states have call predecessors, (37), 13 states have call successors, (37) [2023-04-01 23:53:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5073 transitions. [2023-04-01 23:53:22,393 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5073 transitions. Word has length 64 [2023-04-01 23:53:22,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:53:22,395 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 5073 transitions. [2023-04-01 23:53:22,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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 23:53:22,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5073 transitions. [2023-04-01 23:53:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-01 23:53:22,406 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:53:22,406 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, 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 23:53:22,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:53:22,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:53:22,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:53:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -332743107, now seen corresponding path program 1 times [2023-04-01 23:53:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:53:22,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775023718] [2023-04-01 23:53:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:53:22,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:53:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:53:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:22,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:53:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:53:22,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:53:22,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775023718] [2023-04-01 23:53:22,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775023718] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:53:22,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:53:22,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:53:22,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511582081] [2023-04-01 23:53:22,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:53:22,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:53:22,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:53:22,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:53:22,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:53:22,785 INFO L87 Difference]: Start difference. First operand 3194 states and 5073 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 23:53:47,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:53:47,824 INFO L93 Difference]: Finished difference Result 20617 states and 33713 transitions. [2023-04-01 23:53:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:53:47,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 135 [2023-04-01 23:53:47,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:53:47,892 INFO L225 Difference]: With dead ends: 20617 [2023-04-01 23:53:47,892 INFO L226 Difference]: Without dead ends: 17429 [2023-04-01 23:53:47,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:53:47,908 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 11623 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 28037 mSolverCounterSat, 3775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11623 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 31812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3775 IncrementalHoareTripleChecker+Valid, 28037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:53:47,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11623 Valid, 1043 Invalid, 31812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3775 Valid, 28037 Invalid, 0 Unknown, 0 Unchecked, 24.2s Time] [2023-04-01 23:53:47,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17429 states. [2023-04-01 23:53:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17429 to 17373. [2023-04-01 23:53:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17373 states, 17154 states have (on average 1.3166025416812406) internal successors, (22585), 17166 states have internal predecessors, (22585), 74 states have call successors, (74), 74 states have call predecessors, (74), 144 states have return successors, (810), 132 states have call predecessors, (810), 73 states have call successors, (810) [2023-04-01 23:53:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17373 states to 17373 states and 23469 transitions. [2023-04-01 23:53:48,282 INFO L78 Accepts]: Start accepts. Automaton has 17373 states and 23469 transitions. Word has length 135 [2023-04-01 23:53:48,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:53:48,283 INFO L495 AbstractCegarLoop]: Abstraction has 17373 states and 23469 transitions. [2023-04-01 23:53:48,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 23:53:48,284 INFO L276 IsEmpty]: Start isEmpty. Operand 17373 states and 23469 transitions. [2023-04-01 23:53:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-04-01 23:53:48,286 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:53:48,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:48,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:53:48,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:53:48,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:53:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1050716517, now seen corresponding path program 1 times [2023-04-01 23:53:48,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:53:48,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101877934] [2023-04-01 23:53:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:53:48,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:53:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:48,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:53:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:48,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:53:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:53:48,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:53:48,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101877934] [2023-04-01 23:53:48,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101877934] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:53:48,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:53:48,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:53:48,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947781701] [2023-04-01 23:53:48,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:53:48,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:53:48,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:53:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:53:48,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:53:48,692 INFO L87 Difference]: Start difference. First operand 17373 states and 23469 transitions. Second operand has 7 states, 6 states have (on average 26.5) internal successors, (159), 4 states have internal predecessors, (159), 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 23:53:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:53:59,798 INFO L93 Difference]: Finished difference Result 51229 states and 72277 transitions. [2023-04-01 23:53:59,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:53:59,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 26.5) internal successors, (159), 4 states have internal predecessors, (159), 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 165 [2023-04-01 23:53:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:53:59,894 INFO L225 Difference]: With dead ends: 51229 [2023-04-01 23:53:59,894 INFO L226 Difference]: Without dead ends: 33862 [2023-04-01 23:53:59,926 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 23:53:59,930 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 8899 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 10631 mSolverCounterSat, 2137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8899 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 12768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2137 IncrementalHoareTripleChecker+Valid, 10631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:53:59,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8899 Valid, 1102 Invalid, 12768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2137 Valid, 10631 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-04-01 23:53:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33862 states. [2023-04-01 23:54:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33862 to 33708. [2023-04-01 23:54:00,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33708 states, 33057 states have (on average 1.2129352330822518) internal successors, (40096), 33128 states have internal predecessors, (40096), 140 states have call successors, (140), 140 states have call predecessors, (140), 510 states have return successors, (3490), 439 states have call predecessors, (3490), 139 states have call successors, (3490) [2023-04-01 23:54:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33708 states to 33708 states and 43726 transitions. [2023-04-01 23:54:00,581 INFO L78 Accepts]: Start accepts. Automaton has 33708 states and 43726 transitions. Word has length 165 [2023-04-01 23:54:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:54:00,582 INFO L495 AbstractCegarLoop]: Abstraction has 33708 states and 43726 transitions. [2023-04-01 23:54:00,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 26.5) internal successors, (159), 4 states have internal predecessors, (159), 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 23:54:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 33708 states and 43726 transitions. [2023-04-01 23:54:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-04-01 23:54:00,585 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:54:00,586 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, 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] [2023-04-01 23:54:00,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:54:00,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:54:00,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:54:00,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2072304962, now seen corresponding path program 1 times [2023-04-01 23:54:00,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:54:00,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189860639] [2023-04-01 23:54:00,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:54:00,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:54:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:01,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:54:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:01,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:54:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:01,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-01 23:54:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 114 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 23:54:01,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:54:01,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189860639] [2023-04-01 23:54:01,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189860639] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:54:01,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483431634] [2023-04-01 23:54:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:54:01,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:54:01,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:54:01,209 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 23:54:01,210 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 23:54:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:01,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:54:01,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:54:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-04-01 23:54:01,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:54:01,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483431634] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:54:01,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:54:01,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-04-01 23:54:01,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549184831] [2023-04-01 23:54:01,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:54:01,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:54:01,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:54:01,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:54:01,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:54:01,550 INFO L87 Difference]: Start difference. First operand 33708 states and 43726 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:54:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:54:10,388 INFO L93 Difference]: Finished difference Result 101284 states and 135130 transitions. [2023-04-01 23:54:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 23:54:10,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 259 [2023-04-01 23:54:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:54:10,563 INFO L225 Difference]: With dead ends: 101284 [2023-04-01 23:54:10,563 INFO L226 Difference]: Without dead ends: 67582 [2023-04-01 23:54:10,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:54:10,637 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 7865 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 8317 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7865 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 9217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 8317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:54:10,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7865 Valid, 993 Invalid, 9217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 8317 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-01 23:54:10,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67582 states. [2023-04-01 23:54:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67582 to 60438. [2023-04-01 23:54:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60438 states, 59020 states have (on average 1.200626906133514) internal successors, (70861), 59212 states have internal predecessors, (70861), 248 states have call successors, (248), 248 states have call predecessors, (248), 1169 states have return successors, (7773), 977 states have call predecessors, (7773), 247 states have call successors, (7773) [2023-04-01 23:54:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60438 states to 60438 states and 78882 transitions. [2023-04-01 23:54:11,813 INFO L78 Accepts]: Start accepts. Automaton has 60438 states and 78882 transitions. Word has length 259 [2023-04-01 23:54:11,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:54:11,814 INFO L495 AbstractCegarLoop]: Abstraction has 60438 states and 78882 transitions. [2023-04-01 23:54:11,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:54:11,814 INFO L276 IsEmpty]: Start isEmpty. Operand 60438 states and 78882 transitions. [2023-04-01 23:54:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-04-01 23:54:11,820 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:54:11,823 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:54:11,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 23:54:12,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:54:12,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:54:12,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:54:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1329410455, now seen corresponding path program 1 times [2023-04-01 23:54:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:54:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987396267] [2023-04-01 23:54:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:54:12,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:54:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:54:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:12,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:54:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-04-01 23:54:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:54:12,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:54:12,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987396267] [2023-04-01 23:54:12,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987396267] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:54:12,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191564382] [2023-04-01 23:54:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:54:12,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:54:12,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:54:12,803 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 23:54:12,803 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 23:54:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:13,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:54:13,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:54:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:54:13,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:54:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:54:13,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191564382] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:54:13,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:54:13,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:54:13,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293486308] [2023-04-01 23:54:13,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:54:13,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:54:13,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:54:13,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:54:13,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:54:13,735 INFO L87 Difference]: Start difference. First operand 60438 states and 78882 transitions. Second operand has 12 states, 12 states have (on average 63.333333333333336) internal successors, (760), 10 states have internal predecessors, (760), 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 23:54:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:54:31,678 INFO L93 Difference]: Finished difference Result 184231 states and 263352 transitions. [2023-04-01 23:54:31,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:54:31,697 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 63.333333333333336) internal successors, (760), 10 states have internal predecessors, (760), 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 439 [2023-04-01 23:54:31,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:54:32,189 INFO L225 Difference]: With dead ends: 184231 [2023-04-01 23:54:32,190 INFO L226 Difference]: Without dead ends: 123799 [2023-04-01 23:54:32,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 880 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-01 23:54:32,373 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 9996 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 19738 mSolverCounterSat, 6669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9996 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 26407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6669 IncrementalHoareTripleChecker+Valid, 19738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:54:32,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9996 Valid, 1442 Invalid, 26407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6669 Valid, 19738 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2023-04-01 23:54:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123799 states. [2023-04-01 23:54:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123799 to 120468. [2023-04-01 23:54:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120468 states, 116979 states have (on average 1.1984116807290197) internal successors, (140189), 117565 states have internal predecessors, (140189), 488 states have call successors, (488), 488 states have call predecessors, (488), 3000 states have return successors, (27307), 2414 states have call predecessors, (27307), 487 states have call successors, (27307) [2023-04-01 23:54:35,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120468 states to 120468 states and 167984 transitions. [2023-04-01 23:54:35,383 INFO L78 Accepts]: Start accepts. Automaton has 120468 states and 167984 transitions. Word has length 439 [2023-04-01 23:54:35,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:54:35,383 INFO L495 AbstractCegarLoop]: Abstraction has 120468 states and 167984 transitions. [2023-04-01 23:54:35,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.333333333333336) internal successors, (760), 10 states have internal predecessors, (760), 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 23:54:35,384 INFO L276 IsEmpty]: Start isEmpty. Operand 120468 states and 167984 transitions. [2023-04-01 23:54:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-04-01 23:54:35,394 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:54:35,394 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 23:54:35,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:54:35,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:54:35,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:54:35,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:54:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash 487646886, now seen corresponding path program 1 times [2023-04-01 23:54:35,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:54:35,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005478215] [2023-04-01 23:54:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:54:35,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:54:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:54:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:54:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:36,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-04-01 23:54:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:36,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2023-04-01 23:54:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 498 proven. 2 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-04-01 23:54:36,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:54:36,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005478215] [2023-04-01 23:54:36,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005478215] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:54:36,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776246307] [2023-04-01 23:54:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:54:36,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:54:36,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:54:36,956 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 23:54:36,981 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 23:54:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:37,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:54:37,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:54:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-04-01 23:54:37,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:54:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-04-01 23:54:37,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776246307] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:54:37,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:54:37,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:54:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786007108] [2023-04-01 23:54:37,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:54:37,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:54:37,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:54:37,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:54:37,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:54:37,927 INFO L87 Difference]: Start difference. First operand 120468 states and 167984 transitions. Second operand has 12 states, 12 states have (on average 64.58333333333333) internal successors, (775), 10 states have internal predecessors, (775), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:54:57,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:54:57,044 INFO L93 Difference]: Finished difference Result 338448 states and 493784 transitions. [2023-04-01 23:54:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 23:54:57,045 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 64.58333333333333) internal successors, (775), 10 states have internal predecessors, (775), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 662 [2023-04-01 23:54:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:54:58,006 INFO L225 Difference]: With dead ends: 338448 [2023-04-01 23:54:58,007 INFO L226 Difference]: Without dead ends: 206401 [2023-04-01 23:54:58,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1361 GetRequests, 1337 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:54:58,185 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 14425 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 29058 mSolverCounterSat, 4811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14425 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 33869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4811 IncrementalHoareTripleChecker+Valid, 29058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:54:58,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14425 Valid, 1534 Invalid, 33869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4811 Valid, 29058 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2023-04-01 23:54:58,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206401 states. [2023-04-01 23:55:01,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206401 to 192890. [2023-04-01 23:55:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192890 states, 187198 states have (on average 1.0984465646000492) internal successors, (205627), 188234 states have internal predecessors, (205627), 782 states have call successors, (782), 782 states have call predecessors, (782), 4909 states have return successors, (31721), 3873 states have call predecessors, (31721), 781 states have call successors, (31721) [2023-04-01 23:55:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192890 states to 192890 states and 238130 transitions. [2023-04-01 23:55:02,075 INFO L78 Accepts]: Start accepts. Automaton has 192890 states and 238130 transitions. Word has length 662 [2023-04-01 23:55:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:55:02,076 INFO L495 AbstractCegarLoop]: Abstraction has 192890 states and 238130 transitions. [2023-04-01 23:55:02,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.58333333333333) internal successors, (775), 10 states have internal predecessors, (775), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:55:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 192890 states and 238130 transitions. [2023-04-01 23:55:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2023-04-01 23:55:02,093 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:55:02,093 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:55:02,113 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 23:55:02,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:55:02,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:55:02,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:55:02,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1806249586, now seen corresponding path program 1 times [2023-04-01 23:55:02,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:55:02,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131351870] [2023-04-01 23:55:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:55:02,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:55:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:55:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:03,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:55:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:55:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:55:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-01 23:55:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 174 proven. 3 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-04-01 23:55:03,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:55:03,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131351870] [2023-04-01 23:55:03,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131351870] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:55:03,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862491853] [2023-04-01 23:55:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:55:03,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:55:03,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:55:03,318 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 23:55:03,319 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 23:55:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:03,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:55:03,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:55:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 310 proven. 56 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-04-01 23:55:03,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:55:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-04-01 23:55:04,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862491853] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:55:04,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:55:04,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-04-01 23:55:04,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271204719] [2023-04-01 23:55:04,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:55:04,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 23:55:04,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:55:04,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 23:55:04,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:55:04,144 INFO L87 Difference]: Start difference. First operand 192890 states and 238130 transitions. Second operand has 10 states, 10 states have (on average 86.8) internal successors, (868), 8 states have internal predecessors, (868), 4 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 23:55:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:55:28,094 INFO L93 Difference]: Finished difference Result 764799 states and 1018672 transitions. [2023-04-01 23:55:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 23:55:28,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 86.8) internal successors, (868), 8 states have internal predecessors, (868), 4 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 873 [2023-04-01 23:55:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:55:30,507 INFO L225 Difference]: With dead ends: 764799 [2023-04-01 23:55:30,507 INFO L226 Difference]: Without dead ends: 571842 [2023-04-01 23:55:30,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1776 GetRequests, 1758 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2023-04-01 23:55:30,814 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 20151 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 17107 mSolverCounterSat, 6766 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20151 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 23873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6766 IncrementalHoareTripleChecker+Valid, 17107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:55:30,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20151 Valid, 1291 Invalid, 23873 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6766 Valid, 17107 Invalid, 0 Unknown, 0 Unchecked, 19.0s Time] [2023-04-01 23:55:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571842 states. [2023-04-01 23:55:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571842 to 551809. [2023-04-01 23:55:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551809 states, 539895 states have (on average 1.0980320247455524) internal successors, (592822), 541836 states have internal predecessors, (592822), 2294 states have call successors, (2294), 2294 states have call predecessors, (2294), 9619 states have return successors, (113055), 7678 states have call predecessors, (113055), 2293 states have call successors, (113055) [2023-04-01 23:55:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551809 states to 551809 states and 708171 transitions. [2023-04-01 23:55:43,102 INFO L78 Accepts]: Start accepts. Automaton has 551809 states and 708171 transitions. Word has length 873 [2023-04-01 23:55:43,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:55:43,103 INFO L495 AbstractCegarLoop]: Abstraction has 551809 states and 708171 transitions. [2023-04-01 23:55:43,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.8) internal successors, (868), 8 states have internal predecessors, (868), 4 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 23:55:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 551809 states and 708171 transitions. [2023-04-01 23:55:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2023-04-01 23:55:43,120 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:55:43,121 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:43,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:55:43,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:55:43,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:55:43,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:55:43,328 INFO L85 PathProgramCache]: Analyzing trace with hash -416382557, now seen corresponding path program 1 times [2023-04-01 23:55:43,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:55:43,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924492706] [2023-04-01 23:55:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:55:43,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:55:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:55:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:44,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:55:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:44,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:55:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:44,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:55:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2023-04-01 23:55:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:44,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2023-04-01 23:55:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-04-01 23:55:44,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:55:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924492706] [2023-04-01 23:55:44,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924492706] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:55:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760161146] [2023-04-01 23:55:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:55:44,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:55:44,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:55:44,518 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 23:55:44,540 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 23:55:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:44,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:55:44,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:55:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 400 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-04-01 23:55:44,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:55:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 400 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-04-01 23:55:45,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760161146] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:55:45,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:55:45,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-04-01 23:55:45,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018992928] [2023-04-01 23:55:45,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:55:45,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:55:45,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:55:45,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:55:45,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:55:45,335 INFO L87 Difference]: Start difference. First operand 551809 states and 708171 transitions. Second operand has 13 states, 13 states have (on average 76.46153846153847) internal successors, (994), 11 states have internal predecessors, (994), 5 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 23:56:21,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:56:21,011 INFO L93 Difference]: Finished difference Result 1480575 states and 1977067 transitions. [2023-04-01 23:56:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 23:56:21,012 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 76.46153846153847) internal successors, (994), 11 states have internal predecessors, (994), 5 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1008 [2023-04-01 23:56:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:56:25,335 INFO L225 Difference]: With dead ends: 1480575 [2023-04-01 23:56:25,335 INFO L226 Difference]: Without dead ends: 930161 [2023-04-01 23:56:26,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2059 GetRequests, 2034 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2023-04-01 23:56:26,188 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 7135 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 44786 mSolverCounterSat, 4422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7137 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 49208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4422 IncrementalHoareTripleChecker+Valid, 44786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:56:26,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7137 Valid, 2223 Invalid, 49208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4422 Valid, 44786 Invalid, 0 Unknown, 0 Unchecked, 24.8s Time] [2023-04-01 23:56:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930161 states.