/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:18:40,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:18:40,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:18:40,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:18:40,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:18:40,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:18:40,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:18:40,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:18:40,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:18:40,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:18:40,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:18:40,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:18:40,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:18:40,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:18:40,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:18:40,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:18:40,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 23:18:40,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-30 23:18:40,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-30 23:18:40,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-30 23:18:40,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-30 23:18:40,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-30 23:18:40,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-30 23:18:40,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-30 23:18:40,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-30 23:18:40,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:18:40,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:18:40,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:18:40,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:18:40,938 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:18:40,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:18:40,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:18:40,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:18:40,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:18:40,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:18:40,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:18:40,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:18:40,941 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:18:40,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:18:40,941 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:18:40,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:18:40,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:18:40,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:18:40,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:18:40,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:18:40,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:18:40,942 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:18:40,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:18:40,943 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:18:40,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:18:40,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:18:40,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:18:40,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:18:40,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:18:40,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:18:40,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:18:40,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:18:40,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:18:40,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:18:40,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:18:40,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:18:40,945 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:18:40,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:18:40,945 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:18:40,945 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:18:41,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:18:41,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:18:41,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:18:41,188 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:18:41,188 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:18:41,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label06.c [2023-03-30 23:18:42,377 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:18:42,785 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:18:42,786 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label06.c [2023-03-30 23:18:42,819 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f9a7f34/e212d40eeec64ac39cb86c16196fac82/FLAG0e7590b8f [2023-03-30 23:18:42,838 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f9a7f34/e212d40eeec64ac39cb86c16196fac82 [2023-03-30 23:18:42,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:18:42,842 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:18:42,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:18:42,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:18:42,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:18:42,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:18:42" (1/1) ... [2023-03-30 23:18:42,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7b20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:42, skipping insertion in model container [2023-03-30 23:18:42,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:18:42" (1/1) ... [2023-03-30 23:18:42,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:18:42,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:18:43,170 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label06.c[3178,3191] [2023-03-30 23:18:43,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:18:43,892 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:18:43,916 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label06.c[3178,3191] [2023-03-30 23:18:44,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:18:44,317 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:18:44,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44 WrapperNode [2023-03-30 23:18:44,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:18:44,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:18:44,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:18:44,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:18:44,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44" (1/1) ... [2023-03-30 23:18:44,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44" (1/1) ... [2023-03-30 23:18:44,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44" (1/1) ... [2023-03-30 23:18:44,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44" (1/1) ... [2023-03-30 23:18:44,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44" (1/1) ... [2023-03-30 23:18:44,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44" (1/1) ... [2023-03-30 23:18:44,513 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44" (1/1) ... [2023-03-30 23:18:44,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44" (1/1) ... [2023-03-30 23:18:44,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:18:44,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:18:44,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:18:44,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:18:44,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44" (1/1) ... [2023-03-30 23:18:44,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:18:44,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:18:44,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 23:18:44,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 23:18:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:18:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:18:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:18:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:18:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:18:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 23:18:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-30 23:18:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:18:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:18:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:18:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 23:18:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-30 23:18:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:18:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:18:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:18:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:18:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:18:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:18:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:18:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:18:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:18:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:18:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:18:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:18:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:18:44,723 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:18:44,725 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:18:48,537 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:18:48,558 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:18:48,558 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:18:48,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:18:48 BoogieIcfgContainer [2023-03-30 23:18:48,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:18:48,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:18:48,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:18:48,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:18:48,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:18:42" (1/3) ... [2023-03-30 23:18:48,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120e7c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:18:48, skipping insertion in model container [2023-03-30 23:18:48,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:18:44" (2/3) ... [2023-03-30 23:18:48,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120e7c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:18:48, skipping insertion in model container [2023-03-30 23:18:48,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:18:48" (3/3) ... [2023-03-30 23:18:48,576 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label06.c [2023-03-30 23:18:48,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:18:48,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:18:48,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:18:48,653 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;@7e999674, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:18:48,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:18:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-30 23:18:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-03-30 23:18:48,667 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:18:48,668 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] [2023-03-30 23:18:48,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:18:48,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:18:48,673 INFO L85 PathProgramCache]: Analyzing trace with hash -152211120, now seen corresponding path program 1 times [2023-03-30 23:18:48,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:18:48,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671389574] [2023-03-30 23:18:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:18:48,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:18:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:18:49,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:18:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:18:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:18:49,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:18:49,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671389574] [2023-03-30 23:18:49,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671389574] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:18:49,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:18:49,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:18:49,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147448506] [2023-03-30 23:18:49,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:18:49,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:18:49,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:18:49,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:18:49,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:18:49,202 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:18:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:18:56,260 INFO L93 Difference]: Finished difference Result 3253 states and 6294 transitions. [2023-03-30 23:18:56,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:18:56,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 29 [2023-03-30 23:18:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:18:56,299 INFO L225 Difference]: With dead ends: 3253 [2023-03-30 23:18:56,299 INFO L226 Difference]: Without dead ends: 2346 [2023-03-30 23:18:56,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:18:56,310 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4037 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 4910 mSolverCounterSat, 1386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4037 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1386 IncrementalHoareTripleChecker+Valid, 4910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:18:56,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4037 Valid, 65 Invalid, 6296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1386 Valid, 4910 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-03-30 23:18:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2023-03-30 23:18:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2023-03-30 23:18:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2295 states have (on average 1.6226579520697169) internal successors, (3724), 2297 states have internal predecessors, (3724), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (49), 19 states have call predecessors, (49), 13 states have call successors, (49) [2023-03-30 23:18:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3787 transitions. [2023-03-30 23:18:56,457 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3787 transitions. Word has length 29 [2023-03-30 23:18:56,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:18:56,458 INFO L495 AbstractCegarLoop]: Abstraction has 2331 states and 3787 transitions. [2023-03-30 23:18:56,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:18:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3787 transitions. [2023-03-30 23:18:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-30 23:18:56,465 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:18:56,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:18:56,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:18:56,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:18:56,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:18:56,468 INFO L85 PathProgramCache]: Analyzing trace with hash -903938569, now seen corresponding path program 1 times [2023-03-30 23:18:56,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:18:56,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716316484] [2023-03-30 23:18:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:18:56,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:18:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:18:56,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:18:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:18:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:18:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:18:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:18:56,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:18:56,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716316484] [2023-03-30 23:18:56,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716316484] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:18:56,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889188702] [2023-03-30 23:18:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:18:56,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:18:56,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:18:56,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:18:56,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:18:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:18:56,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:18:56,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:18:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:18:57,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:18:57,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889188702] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:18:57,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:18:57,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:18:57,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339169470] [2023-03-30 23:18:57,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:18:57,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:18:57,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:18:57,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:18:57,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:18:57,066 INFO L87 Difference]: Start difference. First operand 2331 states and 3787 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:19:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:19:00,427 INFO L93 Difference]: Finished difference Result 6979 states and 11460 transitions. [2023-03-30 23:19:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:19:00,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2023-03-30 23:19:00,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:19:00,450 INFO L225 Difference]: With dead ends: 6979 [2023-03-30 23:19:00,451 INFO L226 Difference]: Without dead ends: 4654 [2023-03-30 23:19:00,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:19:00,458 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 757 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:19:00,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1217 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-03-30 23:19:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2023-03-30 23:19:00,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 4654. [2023-03-30 23:19:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 4586 states have (on average 1.5248582642825992) internal successors, (6993), 4590 states have internal predecessors, (6993), 26 states have call successors, (26), 26 states have call predecessors, (26), 41 states have return successors, (165), 37 states have call predecessors, (165), 25 states have call successors, (165) [2023-03-30 23:19:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 7184 transitions. [2023-03-30 23:19:00,613 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 7184 transitions. Word has length 104 [2023-03-30 23:19:00,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:19:00,614 INFO L495 AbstractCegarLoop]: Abstraction has 4654 states and 7184 transitions. [2023-03-30 23:19:00,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:19:00,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 7184 transitions. [2023-03-30 23:19:00,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-03-30 23:19:00,616 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:19:00,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:19:00,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 23:19:00,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:19:00,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:19:00,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:19:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash -322015169, now seen corresponding path program 1 times [2023-03-30 23:19:00,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:19:00,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605689291] [2023-03-30 23:19:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:19:00,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:19:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:19:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:01,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:19:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:19:01,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:19:01,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605689291] [2023-03-30 23:19:01,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605689291] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:19:01,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:19:01,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:19:01,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352114679] [2023-03-30 23:19:01,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:19:01,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:19:01,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:19:01,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:19:01,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:19:01,289 INFO L87 Difference]: Start difference. First operand 4654 states and 7184 transitions. Second operand has 7 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:19:06,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:19:06,463 INFO L93 Difference]: Finished difference Result 14200 states and 22515 transitions. [2023-03-30 23:19:06,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-30 23:19:06,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 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 108 [2023-03-30 23:19:06,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:19:06,516 INFO L225 Difference]: With dead ends: 14200 [2023-03-30 23:19:06,516 INFO L226 Difference]: Without dead ends: 9552 [2023-03-30 23:19:06,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:19:06,532 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4683 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4965 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 5921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 4965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:19:06,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 117 Invalid, 5921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 4965 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-03-30 23:19:06,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9552 states. [2023-03-30 23:19:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9552 to 9439. [2023-03-30 23:19:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9439 states, 9254 states have (on average 1.3996109790360924) internal successors, (12952), 9282 states have internal predecessors, (12952), 50 states have call successors, (50), 50 states have call predecessors, (50), 134 states have return successors, (679), 106 states have call predecessors, (679), 49 states have call successors, (679) [2023-03-30 23:19:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9439 states to 9439 states and 13681 transitions. [2023-03-30 23:19:06,882 INFO L78 Accepts]: Start accepts. Automaton has 9439 states and 13681 transitions. Word has length 108 [2023-03-30 23:19:06,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:19:06,883 INFO L495 AbstractCegarLoop]: Abstraction has 9439 states and 13681 transitions. [2023-03-30 23:19:06,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:19:06,884 INFO L276 IsEmpty]: Start isEmpty. Operand 9439 states and 13681 transitions. [2023-03-30 23:19:06,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-03-30 23:19:06,890 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:19:06,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:19:06,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:19:06,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:19:06,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:19:06,891 INFO L85 PathProgramCache]: Analyzing trace with hash 196495172, now seen corresponding path program 1 times [2023-03-30 23:19:06,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:19:06,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496545988] [2023-03-30 23:19:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:19:06,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:19:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:19:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:19:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:19:07,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:19:07,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496545988] [2023-03-30 23:19:07,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496545988] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:19:07,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:19:07,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:19:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095144527] [2023-03-30 23:19:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:19:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:19:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:19:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:19:07,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:19:07,227 INFO L87 Difference]: Start difference. First operand 9439 states and 13681 transitions. Second operand has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:19:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:19:12,601 INFO L93 Difference]: Finished difference Result 29044 states and 44533 transitions. [2023-03-30 23:19:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:19:12,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 119 [2023-03-30 23:19:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:19:12,683 INFO L225 Difference]: With dead ends: 29044 [2023-03-30 23:19:12,683 INFO L226 Difference]: Without dead ends: 19611 [2023-03-30 23:19:12,711 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 [2023-03-30 23:19:12,711 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3863 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 5100 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3863 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 6248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 5100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:19:12,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3863 Valid, 125 Invalid, 6248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 5100 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-03-30 23:19:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19611 states. [2023-03-30 23:19:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19611 to 19395. [2023-03-30 23:19:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19395 states, 18827 states have (on average 1.2678068731077707) internal successors, (23869), 18964 states have internal predecessors, (23869), 98 states have call successors, (98), 98 states have call predecessors, (98), 469 states have return successors, (2813), 332 states have call predecessors, (2813), 97 states have call successors, (2813) [2023-03-30 23:19:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19395 states to 19395 states and 26780 transitions. [2023-03-30 23:19:13,240 INFO L78 Accepts]: Start accepts. Automaton has 19395 states and 26780 transitions. Word has length 119 [2023-03-30 23:19:13,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:19:13,240 INFO L495 AbstractCegarLoop]: Abstraction has 19395 states and 26780 transitions. [2023-03-30 23:19:13,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:19:13,241 INFO L276 IsEmpty]: Start isEmpty. Operand 19395 states and 26780 transitions. [2023-03-30 23:19:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-03-30 23:19:13,243 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:19:13,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:19:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-30 23:19:13,243 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:19:13,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:19:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1906886563, now seen corresponding path program 1 times [2023-03-30 23:19:13,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:19:13,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523454953] [2023-03-30 23:19:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:19:13,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:19:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:13,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:19:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:19:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:19:13,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:19:13,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523454953] [2023-03-30 23:19:13,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523454953] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:19:13,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:19:13,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:19:13,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842974664] [2023-03-30 23:19:13,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:19:13,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:19:13,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:19:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:19:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:19:13,602 INFO L87 Difference]: Start difference. First operand 19395 states and 26780 transitions. Second operand has 8 states, 7 states have (on average 19.428571428571427) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:19:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:19:21,577 INFO L93 Difference]: Finished difference Result 72141 states and 106498 transitions. [2023-03-30 23:19:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:19:21,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.428571428571427) internal successors, (136), 5 states have internal predecessors, (136), 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 142 [2023-03-30 23:19:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:19:21,786 INFO L225 Difference]: With dead ends: 72141 [2023-03-30 23:19:21,787 INFO L226 Difference]: Without dead ends: 52752 [2023-03-30 23:19:21,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:19:21,839 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4516 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 7655 mSolverCounterSat, 2471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4516 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 10126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2471 IncrementalHoareTripleChecker+Valid, 7655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:19:21,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4516 Valid, 144 Invalid, 10126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2471 Valid, 7655 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-03-30 23:19:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52752 states. [2023-03-30 23:19:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52752 to 48858. [2023-03-30 23:19:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48858 states, 47576 states have (on average 1.20997982175887) internal successors, (57566), 47883 states have internal predecessors, (57566), 246 states have call successors, (246), 246 states have call predecessors, (246), 1035 states have return successors, (9526), 728 states have call predecessors, (9526), 245 states have call successors, (9526) [2023-03-30 23:19:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48858 states to 48858 states and 67338 transitions. [2023-03-30 23:19:23,073 INFO L78 Accepts]: Start accepts. Automaton has 48858 states and 67338 transitions. Word has length 142 [2023-03-30 23:19:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:19:23,074 INFO L495 AbstractCegarLoop]: Abstraction has 48858 states and 67338 transitions. [2023-03-30 23:19:23,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.428571428571427) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:19:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 48858 states and 67338 transitions. [2023-03-30 23:19:23,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-03-30 23:19:23,076 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:19:23,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:19:23,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-30 23:19:23,076 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:19:23,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:19:23,077 INFO L85 PathProgramCache]: Analyzing trace with hash -432895080, now seen corresponding path program 1 times [2023-03-30 23:19:23,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:19:23,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212803048] [2023-03-30 23:19:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:19:23,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:19:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:23,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:19:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:19:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:19:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:19:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212803048] [2023-03-30 23:19:23,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212803048] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:19:23,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938776666] [2023-03-30 23:19:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:19:23,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:19:23,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:19:23,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:19:23,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:19:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:23,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:19:23,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:19:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:19:23,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:19:23,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938776666] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:19:23,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:19:23,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:19:23,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277117250] [2023-03-30 23:19:23,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:19:23,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:19:23,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:19:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:19:23,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:19:23,470 INFO L87 Difference]: Start difference. First operand 48858 states and 67338 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:19:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:19:26,759 INFO L93 Difference]: Finished difference Result 114743 states and 159502 transitions. [2023-03-30 23:19:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:19:26,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2023-03-30 23:19:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:19:27,020 INFO L225 Difference]: With dead ends: 114743 [2023-03-30 23:19:27,020 INFO L226 Difference]: Without dead ends: 65891 [2023-03-30 23:19:27,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:19:27,228 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 796 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:19:27,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1291 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-03-30 23:19:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65891 states. [2023-03-30 23:19:28,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65891 to 61275. [2023-03-30 23:19:28,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61275 states, 59809 states have (on average 1.1330903375746124) internal successors, (67769), 60139 states have internal predecessors, (67769), 310 states have call successors, (310), 310 states have call predecessors, (310), 1155 states have return successors, (8392), 825 states have call predecessors, (8392), 309 states have call successors, (8392) [2023-03-30 23:19:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61275 states to 61275 states and 76471 transitions. [2023-03-30 23:19:28,579 INFO L78 Accepts]: Start accepts. Automaton has 61275 states and 76471 transitions. Word has length 177 [2023-03-30 23:19:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:19:28,580 INFO L495 AbstractCegarLoop]: Abstraction has 61275 states and 76471 transitions. [2023-03-30 23:19:28,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:19:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 61275 states and 76471 transitions. [2023-03-30 23:19:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-03-30 23:19:28,583 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:19:28,584 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:19:28,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:19:28,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-03-30 23:19:28,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:19:28,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:19:28,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1291536873, now seen corresponding path program 1 times [2023-03-30 23:19:28,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:19:28,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916502313] [2023-03-30 23:19:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:19:28,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:19:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:19:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:19:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-03-30 23:19:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:19:29,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:19:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916502313] [2023-03-30 23:19:29,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916502313] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:19:29,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436964259] [2023-03-30 23:19:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:19:29,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:19:29,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:19:29,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:19:29,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:19:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:19:29,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:19:29,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:19:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:19:29,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:19:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:19:30,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436964259] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:19:30,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:19:30,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:19:30,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525663152] [2023-03-30 23:19:30,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:19:30,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:19:30,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:19:30,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:19:30,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:19:30,203 INFO L87 Difference]: Start difference. First operand 61275 states and 76471 transitions. Second operand has 12 states, 12 states have (on average 36.416666666666664) internal successors, (437), 10 states have internal predecessors, (437), 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)