/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:57:38,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:57:38,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:57:38,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:57:38,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:57:38,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:57:38,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:57:38,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:57:38,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:57:38,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:57:38,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:57:38,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:57:38,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:57:38,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:57:38,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:57:38,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:57:38,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 23:57:38,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:57:38,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:57:38,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:57:38,722 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 23:57:38,746 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:57:38,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:57:38,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:57:38,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:57:38,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:57:38,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:57:38,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:57:38,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:57:38,747 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:57:38,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:57:38,747 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:57:38,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:57:38,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:57:38,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:57:38,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:57:38,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:57:38,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:57:38,748 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:57:38,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:57:38,748 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:57:38,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:57:38,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:57:38,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:57:38,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:57:38,750 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:57:38,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:57:38,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:57:38,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:57:38,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:57:38,967 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:57:38,967 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:57:38,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label37.c [2023-04-01 23:57:40,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:57:40,488 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:57:40,489 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label37.c [2023-04-01 23:57:40,523 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/991c3e89a/02ea046c4a394314addd1cf5d8679cc9/FLAG41c6771c5 [2023-04-01 23:57:40,537 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/991c3e89a/02ea046c4a394314addd1cf5d8679cc9 [2023-04-01 23:57:40,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:57:40,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:57:40,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:57:40,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:57:40,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:57:40,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:57:40" (1/1) ... [2023-04-01 23:57:40,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a300e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:40, skipping insertion in model container [2023-04-01 23:57:40,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:57:40" (1/1) ... [2023-04-01 23:57:40,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:57:40,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:57:40,910 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_label37.c[5183,5196] [2023-04-01 23:57:41,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:57:41,833 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:57:41,855 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_label37.c[5183,5196] [2023-04-01 23:57:42,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:57:42,373 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:57:42,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42 WrapperNode [2023-04-01 23:57:42,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:57:42,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:57:42,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:57:42,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:57:42,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42" (1/1) ... [2023-04-01 23:57:42,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42" (1/1) ... [2023-04-01 23:57:42,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42" (1/1) ... [2023-04-01 23:57:42,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42" (1/1) ... [2023-04-01 23:57:42,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42" (1/1) ... [2023-04-01 23:57:42,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42" (1/1) ... [2023-04-01 23:57:42,623 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42" (1/1) ... [2023-04-01 23:57:42,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42" (1/1) ... [2023-04-01 23:57:42,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:57:42,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:57:42,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:57:42,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:57:42,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42" (1/1) ... [2023-04-01 23:57:42,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:57:42,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:57:42,700 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 23:57:42,705 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 23:57:42,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:57:42,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:57:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:57:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:57:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:57:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:57:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 23:57:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 23:57:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 23:57:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:57:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:57:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:57:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:57:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:57:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:57:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:57:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:57:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:57:42,800 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:57:42,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:57:48,507 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:57:48,530 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:57:48,530 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:57:48,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:57:48 BoogieIcfgContainer [2023-04-01 23:57:48,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:57:48,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:57:48,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:57:48,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:57:48,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:57:40" (1/3) ... [2023-04-01 23:57:48,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188a80fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:57:48, skipping insertion in model container [2023-04-01 23:57:48,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:42" (2/3) ... [2023-04-01 23:57:48,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188a80fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:57:48, skipping insertion in model container [2023-04-01 23:57:48,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:57:48" (3/3) ... [2023-04-01 23:57:48,539 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label37.c [2023-04-01 23:57:48,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:57:48,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:57:48,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:57:48,607 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;@5a21f68b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:57:48,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:57:48,613 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 23:57:48,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-01 23:57:48,619 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:57:48,620 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] [2023-04-01 23:57:48,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:57:48,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:57:48,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2056114716, now seen corresponding path program 1 times [2023-04-01 23:57:48,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:57:48,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113465176] [2023-04-01 23:57:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:57:48,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:57:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:57:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:57:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:57:49,015 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 23:57:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:57:49,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113465176] [2023-04-01 23:57:49,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113465176] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:57:49,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:57:49,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 23:57:49,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077450481] [2023-04-01 23:57:49,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:57:49,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:57:49,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:57:49,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:57:49,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:57:49,041 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 5 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 23:58:01,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:01,598 INFO L93 Difference]: Finished difference Result 6483 states and 12306 transitions. [2023-04-01 23:58:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:58:01,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 44 [2023-04-01 23:58:01,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:01,635 INFO L225 Difference]: With dead ends: 6483 [2023-04-01 23:58:01,636 INFO L226 Difference]: Without dead ends: 4638 [2023-04-01 23:58:01,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:58:01,660 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 7918 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 9147 mSolverCounterSat, 3639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7918 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 12786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3639 IncrementalHoareTripleChecker+Valid, 9147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:01,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7918 Valid, 495 Invalid, 12786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3639 Valid, 9147 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-04-01 23:58:01,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2023-04-01 23:58:01,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 4629. [2023-04-01 23:58:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4571 states have (on average 1.6764384161015096) internal successors, (7663), 4574 states have internal predecessors, (7663), 20 states have call successors, (20), 20 states have call predecessors, (20), 37 states have return successors, (77), 34 states have call predecessors, (77), 19 states have call successors, (77) [2023-04-01 23:58:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7760 transitions. [2023-04-01 23:58:01,893 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7760 transitions. Word has length 44 [2023-04-01 23:58:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:01,895 INFO L495 AbstractCegarLoop]: Abstraction has 4629 states and 7760 transitions. [2023-04-01 23:58:01,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 23:58:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7760 transitions. [2023-04-01 23:58:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-01 23:58:01,903 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:01,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:01,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:58:01,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:01,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:01,905 INFO L85 PathProgramCache]: Analyzing trace with hash -729228563, now seen corresponding path program 1 times [2023-04-01 23:58:01,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:01,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955137419] [2023-04-01 23:58:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:01,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:02,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:02,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:58:02,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:02,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955137419] [2023-04-01 23:58:02,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955137419] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:02,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:58:02,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:58:02,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573915641] [2023-04-01 23:58:02,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:02,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:58:02,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:58:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:58:02,426 INFO L87 Difference]: Start difference. First operand 4629 states and 7760 transitions. Second operand has 7 states, 6 states have (on average 21.166666666666668) internal successors, (127), 4 states have internal predecessors, (127), 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 23:58:12,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:12,593 INFO L93 Difference]: Finished difference Result 13837 states and 23541 transitions. [2023-04-01 23:58:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:58:12,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.166666666666668) internal successors, (127), 4 states have internal predecessors, (127), 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 133 [2023-04-01 23:58:12,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:12,633 INFO L225 Difference]: With dead ends: 13837 [2023-04-01 23:58:12,633 INFO L226 Difference]: Without dead ends: 9214 [2023-04-01 23:58:12,644 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 23:58:12,647 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 8094 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 9996 mSolverCounterSat, 2127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8094 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 12123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2127 IncrementalHoareTripleChecker+Valid, 9996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:12,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8094 Valid, 897 Invalid, 12123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2127 Valid, 9996 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-04-01 23:58:12,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9214 states. [2023-04-01 23:58:12,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9214 to 9059. [2023-04-01 23:58:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9059 states, 8892 states have (on average 1.4507422402159245) internal successors, (12900), 8909 states have internal predecessors, (12900), 38 states have call successors, (38), 38 states have call predecessors, (38), 128 states have return successors, (405), 111 states have call predecessors, (405), 37 states have call successors, (405) [2023-04-01 23:58:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9059 states to 9059 states and 13343 transitions. [2023-04-01 23:58:12,882 INFO L78 Accepts]: Start accepts. Automaton has 9059 states and 13343 transitions. Word has length 133 [2023-04-01 23:58:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:12,884 INFO L495 AbstractCegarLoop]: Abstraction has 9059 states and 13343 transitions. [2023-04-01 23:58:12,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.166666666666668) internal successors, (127), 4 states have internal predecessors, (127), 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 23:58:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 9059 states and 13343 transitions. [2023-04-01 23:58:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-04-01 23:58:12,890 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:12,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:12,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:58:12,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:12,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:12,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2048069272, now seen corresponding path program 1 times [2023-04-01 23:58:12,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:12,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427546879] [2023-04-01 23:58:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:12,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:13,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:58:13,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:13,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427546879] [2023-04-01 23:58:13,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427546879] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:13,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:58:13,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:58:13,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371165338] [2023-04-01 23:58:13,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:13,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:58:13,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:13,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:58:13,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:58:13,281 INFO L87 Difference]: Start difference. First operand 9059 states and 13343 transitions. Second operand has 7 states, 6 states have (on average 28.666666666666668) internal successors, (172), 4 states have internal predecessors, (172), 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 23:58:22,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:22,973 INFO L93 Difference]: Finished difference Result 27892 states and 42475 transitions. [2023-04-01 23:58:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:58:22,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 28.666666666666668) internal successors, (172), 4 states have internal predecessors, (172), 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 178 [2023-04-01 23:58:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:23,030 INFO L225 Difference]: With dead ends: 27892 [2023-04-01 23:58:23,030 INFO L226 Difference]: Without dead ends: 18839 [2023-04-01 23:58:23,050 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 23:58:23,051 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 11592 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 9609 mSolverCounterSat, 2149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11592 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 11758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2149 IncrementalHoareTripleChecker+Valid, 9609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:23,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11592 Valid, 997 Invalid, 11758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2149 Valid, 9609 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-04-01 23:58:23,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18839 states. [2023-04-01 23:58:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18839 to 18417. [2023-04-01 23:58:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18417 states, 17885 states have (on average 1.2922560805143974) internal successors, (23112), 17964 states have internal predecessors, (23112), 74 states have call successors, (74), 74 states have call predecessors, (74), 457 states have return successors, (1799), 378 states have call predecessors, (1799), 73 states have call successors, (1799) [2023-04-01 23:58:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18417 states to 18417 states and 24985 transitions. [2023-04-01 23:58:23,464 INFO L78 Accepts]: Start accepts. Automaton has 18417 states and 24985 transitions. Word has length 178 [2023-04-01 23:58:23,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:23,465 INFO L495 AbstractCegarLoop]: Abstraction has 18417 states and 24985 transitions. [2023-04-01 23:58:23,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 28.666666666666668) internal successors, (172), 4 states have internal predecessors, (172), 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 23:58:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 18417 states and 24985 transitions. [2023-04-01 23:58:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-04-01 23:58:23,468 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:23,468 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:58:23,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:58:23,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:23,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash -296381136, now seen corresponding path program 1 times [2023-04-01 23:58:23,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:23,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327789461] [2023-04-01 23:58:23,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:23,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:23,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-01 23:58:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 74 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 23:58:23,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327789461] [2023-04-01 23:58:23,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327789461] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:58:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646057417] [2023-04-01 23:58:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:23,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:58:23,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:58:23,774 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 23:58:23,821 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 23:58:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:23,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:58:23,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:58:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-04-01 23:58:24,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:58:24,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646057417] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:24,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:58:24,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-04-01 23:58:24,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995415307] [2023-04-01 23:58:24,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:24,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:58:24,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:24,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:58:24,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:58:24,047 INFO L87 Difference]: Start difference. First operand 18417 states and 24985 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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 23:58:31,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:31,702 INFO L93 Difference]: Finished difference Result 55851 states and 78306 transitions. [2023-04-01 23:58:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:58:31,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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 197 [2023-04-01 23:58:31,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:31,802 INFO L225 Difference]: With dead ends: 55851 [2023-04-01 23:58:31,803 INFO L226 Difference]: Without dead ends: 37440 [2023-04-01 23:58:31,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:58:31,840 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 8211 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 8101 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8211 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 9109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 8101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:31,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8211 Valid, 941 Invalid, 9109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 8101 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-01 23:58:31,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37440 states. [2023-04-01 23:58:32,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37440 to 32598. [2023-04-01 23:58:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32598 states, 31421 states have (on average 1.2786353075968302) internal successors, (40176), 31627 states have internal predecessors, (40176), 128 states have call successors, (128), 128 states have call predecessors, (128), 1048 states have return successors, (4196), 842 states have call predecessors, (4196), 127 states have call successors, (4196) [2023-04-01 23:58:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32598 states to 32598 states and 44500 transitions. [2023-04-01 23:58:32,578 INFO L78 Accepts]: Start accepts. Automaton has 32598 states and 44500 transitions. Word has length 197 [2023-04-01 23:58:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:32,578 INFO L495 AbstractCegarLoop]: Abstraction has 32598 states and 44500 transitions. [2023-04-01 23:58:32,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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 23:58:32,578 INFO L276 IsEmpty]: Start isEmpty. Operand 32598 states and 44500 transitions. [2023-04-01 23:58:32,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-04-01 23:58:32,581 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:32,583 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:58:32,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 23:58:32,788 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 23:58:32,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:32,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1511302380, now seen corresponding path program 1 times [2023-04-01 23:58:32,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:32,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744967340] [2023-04-01 23:58:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:32,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:32,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:32,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-01 23:58:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 74 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 23:58:33,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744967340] [2023-04-01 23:58:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744967340] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:58:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022574029] [2023-04-01 23:58:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:33,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:58:33,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:58:33,036 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 23:58:33,081 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 23:58:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:33,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:58:33,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:58:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-04-01 23:58:33,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:58:33,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022574029] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:33,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:58:33,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 23:58:33,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947355919] [2023-04-01 23:58:33,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:33,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:58:33,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:33,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:58:33,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:58:33,288 INFO L87 Difference]: Start difference. First operand 32598 states and 44500 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 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 23:58:42,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:42,207 INFO L93 Difference]: Finished difference Result 98970 states and 145136 transitions. [2023-04-01 23:58:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:58:42,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 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 213 [2023-04-01 23:58:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:42,522 INFO L225 Difference]: With dead ends: 98970 [2023-04-01 23:58:42,522 INFO L226 Difference]: Without dead ends: 66378 [2023-04-01 23:58:42,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:58:42,566 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 4826 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 8381 mSolverCounterSat, 3379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4826 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 11760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3379 IncrementalHoareTripleChecker+Valid, 8381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:42,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4826 Valid, 1202 Invalid, 11760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3379 Valid, 8381 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-01 23:58:42,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66378 states. [2023-04-01 23:58:43,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66378 to 63488. [2023-04-01 23:58:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63488 states, 60948 states have (on average 1.2307376780206076) internal successors, (75011), 61436 states have internal predecessors, (75011), 248 states have call successors, (248), 248 states have call predecessors, (248), 2291 states have return successors, (12861), 1803 states have call predecessors, (12861), 247 states have call successors, (12861) [2023-04-01 23:58:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63488 states to 63488 states and 88120 transitions. [2023-04-01 23:58:43,752 INFO L78 Accepts]: Start accepts. Automaton has 63488 states and 88120 transitions. Word has length 213 [2023-04-01 23:58:43,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:43,752 INFO L495 AbstractCegarLoop]: Abstraction has 63488 states and 88120 transitions. [2023-04-01 23:58:43,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 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 23:58:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 63488 states and 88120 transitions. [2023-04-01 23:58:43,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-04-01 23:58:43,758 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:43,759 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:43,766 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 23:58:43,963 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 23:58:43,964 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:43,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1168598446, now seen corresponding path program 1 times [2023-04-01 23:58:43,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:43,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748956243] [2023-04-01 23:58:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:43,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:44,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:44,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 23:58:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-04-01 23:58:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 210 proven. 97 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-04-01 23:58:44,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:44,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748956243] [2023-04-01 23:58:44,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748956243] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:58:44,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12906273] [2023-04-01 23:58:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:44,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:58:44,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:58:44,382 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 23:58:44,384 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 23:58:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:44,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:58:44,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:58:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 401 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-04-01 23:58:44,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:58:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 211 proven. 98 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-04-01 23:58:44,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12906273] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:58:44,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:58:44,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:58:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251525529] [2023-04-01 23:58:44,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:58:44,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:58:44,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:58:44,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:58:44,945 INFO L87 Difference]: Start difference. First operand 63488 states and 88120 transitions. Second operand has 12 states, 12 states have (on average 54.333333333333336) internal successors, (652), 10 states have internal predecessors, (652), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:59:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:59:21,889 INFO L93 Difference]: Finished difference Result 258271 states and 435019 transitions. [2023-04-01 23:59:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-04-01 23:59:21,889 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 54.333333333333336) internal successors, (652), 10 states have internal predecessors, (652), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 499 [2023-04-01 23:59:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:59:23,276 INFO L225 Difference]: With dead ends: 258271 [2023-04-01 23:59:23,277 INFO L226 Difference]: Without dead ends: 184548 [2023-04-01 23:59:23,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1058 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=814, Invalid=4298, Unknown=0, NotChecked=0, Total=5112 [2023-04-01 23:59:23,507 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 16895 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 56720 mSolverCounterSat, 4659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16899 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 61379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4659 IncrementalHoareTripleChecker+Valid, 56720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:59:23,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16899 Valid, 3390 Invalid, 61379 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4659 Valid, 56720 Invalid, 0 Unknown, 0 Unchecked, 33.2s Time] [2023-04-01 23:59:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184548 states. [2023-04-01 23:59:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184548 to 178598. [2023-04-01 23:59:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178598 states, 172207 states have (on average 1.147334312774742) internal successors, (197579), 173461 states have internal predecessors, (197579), 820 states have call successors, (820), 710 states have call predecessors, (820), 5570 states have return successors, (57879), 4426 states have call predecessors, (57879), 819 states have call successors, (57879) [2023-04-01 23:59:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178598 states to 178598 states and 256278 transitions. [2023-04-01 23:59:28,439 INFO L78 Accepts]: Start accepts. Automaton has 178598 states and 256278 transitions. Word has length 499 [2023-04-01 23:59:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:59:28,439 INFO L495 AbstractCegarLoop]: Abstraction has 178598 states and 256278 transitions. [2023-04-01 23:59:28,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.333333333333336) internal successors, (652), 10 states have internal predecessors, (652), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:59:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 178598 states and 256278 transitions. [2023-04-01 23:59:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2023-04-01 23:59:28,514 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:59:28,529 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:28,557 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 23:59:28,739 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 23:59:28,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:59:28,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:59:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash 629278246, now seen corresponding path program 1 times [2023-04-01 23:59:28,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:59:28,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43465073] [2023-04-01 23:59:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:59:28,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:59:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:29,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:59:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:29,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:59:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-04-01 23:59:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:59:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:30,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-04-01 23:59:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 891 [2023-04-01 23:59:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 364 proven. 287 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-04-01 23:59:30,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:59:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43465073] [2023-04-01 23:59:30,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43465073] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:59:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386096170] [2023-04-01 23:59:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:59:30,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:59:30,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:59:31,016 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 23:59:31,017 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 23:59:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:31,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:59:31,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:59:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 863 proven. 2 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-04-01 23:59:31,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:59:33,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 365 proven. 289 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-04-01 23:59:33,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386096170] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:59:33,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:59:33,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:59:33,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632502440] [2023-04-01 23:59:33,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:59:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:59:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:59:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:59:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:59:33,142 INFO L87 Difference]: Start difference. First operand 178598 states and 256278 transitions. Second operand has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 9 states have internal predecessors, (1889), 7 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-04-01 23:59:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:59:54,921 INFO L93 Difference]: Finished difference Result 432426 states and 635067 transitions. [2023-04-01 23:59:54,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-04-01 23:59:54,922 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 9 states have internal predecessors, (1889), 7 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) Word has length 1054 [2023-04-01 23:59:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:59:55,802 INFO L225 Difference]: With dead ends: 432426 [2023-04-01 23:59:55,803 INFO L226 Difference]: Without dead ends: 252453 [2023-04-01 23:59:56,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2208 GetRequests, 2154 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=487, Invalid=2269, Unknown=0, NotChecked=0, Total=2756 [2023-04-01 23:59:56,062 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 17900 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 27933 mSolverCounterSat, 7334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17900 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 35267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7334 IncrementalHoareTripleChecker+Valid, 27933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:59:56,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17900 Valid, 1763 Invalid, 35267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7334 Valid, 27933 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2023-04-01 23:59:56,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252453 states. [2023-04-01 23:59:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252453 to 243014. [2023-04-02 00:00:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243014 states, 234896 states have (on average 1.1035649819494584) internal successors, (259223), 236482 states have internal predecessors, (259223), 1107 states have call successors, (1107), 974 states have call predecessors, (1107), 7010 states have return successors, (64164), 5557 states have call predecessors, (64164), 1106 states have call successors, (64164) [2023-04-02 00:00:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243014 states to 243014 states and 324494 transitions. [2023-04-02 00:00:01,353 INFO L78 Accepts]: Start accepts. Automaton has 243014 states and 324494 transitions. Word has length 1054 [2023-04-02 00:00:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:00:01,354 INFO L495 AbstractCegarLoop]: Abstraction has 243014 states and 324494 transitions. [2023-04-02 00:00:01,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 9 states have internal predecessors, (1889), 7 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-04-02 00:00:01,355 INFO L276 IsEmpty]: Start isEmpty. Operand 243014 states and 324494 transitions. [2023-04-02 00:00:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2023-04-02 00:00:01,366 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:00:01,367 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:00:01,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 00:00:01,572 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 [2023-04-02 00:00:01,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:00:01,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:00:01,573 INFO L85 PathProgramCache]: Analyzing trace with hash -658697414, now seen corresponding path program 1 times [2023-04-02 00:00:01,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:00:01,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412246610] [2023-04-02 00:00:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:01,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:00:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:02,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:00:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:02,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:00:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:00:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-02 00:00:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2023-04-02 00:00:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 833 [2023-04-02 00:00:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 249 proven. 10 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-04-02 00:00:03,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:00:03,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412246610] [2023-04-02 00:00:03,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412246610] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:00:03,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781609401] [2023-04-02 00:00:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:03,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:00:03,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:00:03,140 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) [2023-04-02 00:00:03,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 00:00:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:03,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 00:00:03,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:00:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-04-02 00:00:03,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:00:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-04-02 00:00:03,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781609401] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:00:03,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:00:03,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-04-02 00:00:03,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918938541] [2023-04-02 00:00:03,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:00:03,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 00:00:03,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:00:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 00:00:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-02 00:00:03,875 INFO L87 Difference]: Start difference. First operand 243014 states and 324494 transitions. Second operand has 12 states, 12 states have (on average 73.66666666666667) internal successors, (884), 10 states have internal predecessors, (884), 5 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-02 00:00:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:00:22,915 INFO L93 Difference]: Finished difference Result 486965 states and 653771 transitions. [2023-04-02 00:00:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 00:00:22,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 73.66666666666667) internal successors, (884), 10 states have internal predecessors, (884), 5 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 941 [2023-04-02 00:00:22,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:00:24,634 INFO L225 Difference]: With dead ends: 486965 [2023-04-02 00:00:24,635 INFO L226 Difference]: Without dead ends: 243961 [2023-04-02 00:00:24,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1914 GetRequests, 1896 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-04-02 00:00:24,966 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 16003 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 15937 mSolverCounterSat, 2347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16003 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 18284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2347 IncrementalHoareTripleChecker+Valid, 15937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:00:24,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16003 Valid, 1203 Invalid, 18284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2347 Valid, 15937 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2023-04-02 00:00:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243961 states. [2023-04-02 00:00:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243961 to 243438. [2023-04-02 00:00:31,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243438 states, 235170 states have (on average 1.0949610919760173) internal successors, (257502), 236804 states have internal predecessors, (257502), 1107 states have call successors, (1107), 974 states have call predecessors, (1107), 7160 states have return successors, (58797), 5659 states have call predecessors, (58797), 1106 states have call successors, (58797) [2023-04-02 00:00:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243438 states to 243438 states and 317406 transitions. [2023-04-02 00:00:33,619 INFO L78 Accepts]: Start accepts. Automaton has 243438 states and 317406 transitions. Word has length 941 [2023-04-02 00:00:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:00:33,621 INFO L495 AbstractCegarLoop]: Abstraction has 243438 states and 317406 transitions. [2023-04-02 00:00:33,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.66666666666667) internal successors, (884), 10 states have internal predecessors, (884), 5 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-02 00:00:33,621 INFO L276 IsEmpty]: Start isEmpty. Operand 243438 states and 317406 transitions. [2023-04-02 00:00:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2023-04-02 00:00:33,646 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:00:33,647 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:00:33,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 00:00:33,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:00:33,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:00:33,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:00:33,856 INFO L85 PathProgramCache]: Analyzing trace with hash 979744360, now seen corresponding path program 1 times [2023-04-02 00:00:33,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:00:33,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606557197] [2023-04-02 00:00:33,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:33,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:00:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:35,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:00:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:35,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:00:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:00:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-02 00:00:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:36,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-02 00:00:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:36,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 808 [2023-04-02 00:00:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 489 proven. 11 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-04-02 00:00:36,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:00:36,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606557197] [2023-04-02 00:00:36,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606557197] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:00:36,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064126598] [2023-04-02 00:00:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:36,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:00:36,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:00:36,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 00:00:36,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 00:00:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:36,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 00:00:36,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:00:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 632 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-04-02 00:00:36,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:00:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 335 proven. 89 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-04-02 00:00:37,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064126598] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:00:37,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:00:37,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 17 [2023-04-02 00:00:37,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666716472] [2023-04-02 00:00:37,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:00:37,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 00:00:37,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:00:37,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 00:00:37,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-04-02 00:00:37,254 INFO L87 Difference]: Start difference. First operand 243438 states and 317406 transitions. Second operand has 17 states, 17 states have (on average 55.294117647058826) internal successors, (940), 15 states have internal predecessors, (940), 6 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13)