/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:28:28,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:28:28,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:28:28,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:28:28,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 22:28:28,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 22:28:28,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 22:28:28,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 22:28:28,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 22:28:28,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 22:28:28,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 22:28:28,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 22:28:28,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 22:28:29,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 22:28:29,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 22:28:29,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 22:28:29,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 22:28:29,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:28:29,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:28:29,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:28:29,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:28:29,031 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:28:29,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:28:29,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:28:29,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:28:29,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:28:29,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:28:29,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:28:29,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:28:29,033 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:28:29,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:28:29,034 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:28:29,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:28:29,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:28:29,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:28:29,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:28:29,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:28:29,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:28:29,035 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:28:29,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:28:29,035 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:28:29,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:28:29,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:28:29,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:28:29,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:28:29,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:28:29,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:28:29,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:28:29,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:28:29,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:28:29,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:28:29,036 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:28:29,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:28:29,036 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:28:29,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:28:29,036 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:28:29,036 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:28:29,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:28:29,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:28:29,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:28:29,236 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:28:29,237 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:28:29,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label32.c [2023-04-01 22:28:30,186 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:28:30,564 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:28:30,564 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label32.c [2023-04-01 22:28:30,585 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06390cd46/10c9d78d5b2d4249bb5dab8d694716d9/FLAGc993cdf67 [2023-04-01 22:28:30,777 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06390cd46/10c9d78d5b2d4249bb5dab8d694716d9 [2023-04-01 22:28:30,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:28:30,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:28:30,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:28:30,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:28:30,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:28:30,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:28:30" (1/1) ... [2023-04-01 22:28:30,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b2655b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:30, skipping insertion in model container [2023-04-01 22:28:30,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:28:30" (1/1) ... [2023-04-01 22:28:30,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:28:30,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:28:31,072 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label32.c[5470,5483] [2023-04-01 22:28:31,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:28:31,602 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:28:31,622 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label32.c[5470,5483] [2023-04-01 22:28:31,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:28:31,888 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:28:31,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31 WrapperNode [2023-04-01 22:28:31,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:28:31,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:28:31,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:28:31,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:28:31,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31" (1/1) ... [2023-04-01 22:28:31,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31" (1/1) ... [2023-04-01 22:28:31,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31" (1/1) ... [2023-04-01 22:28:31,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31" (1/1) ... [2023-04-01 22:28:32,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31" (1/1) ... [2023-04-01 22:28:32,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31" (1/1) ... [2023-04-01 22:28:32,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31" (1/1) ... [2023-04-01 22:28:32,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31" (1/1) ... [2023-04-01 22:28:32,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:28:32,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:28:32,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:28:32,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:28:32,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31" (1/1) ... [2023-04-01 22:28:32,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:28:32,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:32,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:28:32,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:28:32,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:28:32,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:28:32,209 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:28:32,209 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:28:32,209 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:28:32,209 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:28:32,209 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:28:32,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:28:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:28:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:28:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:28:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:28:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:28:32,288 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:28:32,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:28:35,085 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:28:35,093 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:28:35,094 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:28:35,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:28:35 BoogieIcfgContainer [2023-04-01 22:28:35,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:28:35,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:28:35,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:28:35,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:28:35,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:28:30" (1/3) ... [2023-04-01 22:28:35,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3feeb2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:28:35, skipping insertion in model container [2023-04-01 22:28:35,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:28:31" (2/3) ... [2023-04-01 22:28:35,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3feeb2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:28:35, skipping insertion in model container [2023-04-01 22:28:35,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:28:35" (3/3) ... [2023-04-01 22:28:35,100 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label32.c [2023-04-01 22:28:35,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:28:35,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:28:35,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:28:35,162 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;@641736cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:28:35,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:28:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:28:35,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-01 22:28:35,173 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:35,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:28:35,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:35,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:35,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1773986784, now seen corresponding path program 1 times [2023-04-01 22:28:35,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:35,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937502026] [2023-04-01 22:28:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:35,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:28:35,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:35,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937502026] [2023-04-01 22:28:35,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937502026] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:28:35,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:28:35,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:28:35,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758059617] [2023-04-01 22:28:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:28:35,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:28:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:28:35,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:28:35,582 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:28:39,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:39,940 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:28:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:28:39,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 49 [2023-04-01 22:28:39,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:39,965 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:28:39,965 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:28:39,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:28:39,976 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3407 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 1446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3407 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 4765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1446 IncrementalHoareTripleChecker+Valid, 3319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:39,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3407 Valid, 42 Invalid, 4765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1446 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 22:28:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:28:40,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:28:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1529 states have (on average 1.8325703073904513) internal successors, (2802), 1530 states have internal predecessors, (2802), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 22:28:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2023-04-01 22:28:40,080 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 49 [2023-04-01 22:28:40,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:40,081 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2023-04-01 22:28:40,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:28:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2023-04-01 22:28:40,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-01 22:28:40,090 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:40,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:28:40,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:28:40,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:40,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:40,091 INFO L85 PathProgramCache]: Analyzing trace with hash 402146595, now seen corresponding path program 1 times [2023-04-01 22:28:40,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:40,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535120580] [2023-04-01 22:28:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:40,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:40,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:28:40,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:40,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535120580] [2023-04-01 22:28:40,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535120580] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:28:40,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:28:40,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:28:40,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472348380] [2023-04-01 22:28:40,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:28:40,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:28:40,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:40,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:28:40,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:28:40,339 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand has 8 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:28:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:46,720 INFO L93 Difference]: Finished difference Result 6326 states and 11703 transitions. [2023-04-01 22:28:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:28:46,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 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 122 [2023-04-01 22:28:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:46,739 INFO L225 Difference]: With dead ends: 6326 [2023-04-01 22:28:46,740 INFO L226 Difference]: Without dead ends: 4779 [2023-04-01 22:28:46,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:28:46,751 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6407 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 7566 mSolverCounterSat, 1356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6407 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 8922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1356 IncrementalHoareTripleChecker+Valid, 7566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:46,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6407 Valid, 187 Invalid, 8922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1356 Valid, 7566 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 22:28:46,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2023-04-01 22:28:46,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4740. [2023-04-01 22:28:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4640 states have (on average 1.5734913793103449) internal successors, (7301), 4654 states have internal predecessors, (7301), 26 states have call successors, (26), 26 states have call predecessors, (26), 73 states have return successors, (255), 59 states have call predecessors, (255), 25 states have call successors, (255) [2023-04-01 22:28:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 7582 transitions. [2023-04-01 22:28:46,874 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 7582 transitions. Word has length 122 [2023-04-01 22:28:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:46,875 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 7582 transitions. [2023-04-01 22:28:46,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:28:46,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 7582 transitions. [2023-04-01 22:28:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-01 22:28:46,878 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:46,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:28:46,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:28:46,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:46,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash -116348857, now seen corresponding path program 1 times [2023-04-01 22:28:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:46,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988701448] [2023-04-01 22:28:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:46,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:28:47,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:47,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988701448] [2023-04-01 22:28:47,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988701448] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:47,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438042116] [2023-04-01 22:28:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:47,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:47,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:47,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:28:47,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:28:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:47,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:28:47,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:28:47,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:28:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:28:47,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438042116] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:47,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:28:47,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 4] total 12 [2023-04-01 22:28:47,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431683452] [2023-04-01 22:28:47,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:28:47,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:28:47,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:47,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:28:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:28:47,663 INFO L87 Difference]: Start difference. First operand 4740 states and 7582 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:28:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:50,603 INFO L93 Difference]: Finished difference Result 14262 states and 23394 transitions. [2023-04-01 22:28:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 22:28:50,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 124 [2023-04-01 22:28:50,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:50,638 INFO L225 Difference]: With dead ends: 14262 [2023-04-01 22:28:50,638 INFO L226 Difference]: Without dead ends: 9528 [2023-04-01 22:28:50,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:28:50,650 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1541 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 1082 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 3522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1082 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:50,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 74 Invalid, 3522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1082 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 22:28:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9528 states. [2023-04-01 22:28:50,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9528 to 9528. [2023-04-01 22:28:50,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9528 states, 9310 states have (on average 1.5216970998925887) internal successors, (14167), 9348 states have internal predecessors, (14167), 50 states have call successors, (50), 50 states have call predecessors, (50), 167 states have return successors, (982), 129 states have call predecessors, (982), 49 states have call successors, (982) [2023-04-01 22:28:50,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9528 states to 9528 states and 15199 transitions. [2023-04-01 22:28:50,833 INFO L78 Accepts]: Start accepts. Automaton has 9528 states and 15199 transitions. Word has length 124 [2023-04-01 22:28:50,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:50,834 INFO L495 AbstractCegarLoop]: Abstraction has 9528 states and 15199 transitions. [2023-04-01 22:28:50,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:28:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 9528 states and 15199 transitions. [2023-04-01 22:28:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-01 22:28:50,836 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:50,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:28:50,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 22:28:51,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:51,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:51,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:51,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1235352149, now seen corresponding path program 1 times [2023-04-01 22:28:51,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:51,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458365523] [2023-04-01 22:28:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:51,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:51,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:28:51,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:51,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458365523] [2023-04-01 22:28:51,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458365523] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:28:51,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:28:51,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:28:51,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050048755] [2023-04-01 22:28:51,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:28:51,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:28:51,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:51,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:28:51,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:28:51,342 INFO L87 Difference]: Start difference. First operand 9528 states and 15199 transitions. Second operand has 8 states, 7 states have (on average 21.714285714285715) internal successors, (152), 5 states have internal predecessors, (152), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:28:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:57,293 INFO L93 Difference]: Finished difference Result 28931 states and 49779 transitions. [2023-04-01 22:28:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:28:57,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 21.714285714285715) internal successors, (152), 5 states have internal predecessors, (152), 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 158 [2023-04-01 22:28:57,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:57,371 INFO L225 Difference]: With dead ends: 28931 [2023-04-01 22:28:57,371 INFO L226 Difference]: Without dead ends: 19409 [2023-04-01 22:28:57,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:28:57,395 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 2416 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 8762 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 9407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 8762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:57,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2416 Valid, 147 Invalid, 9407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 8762 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-04-01 22:28:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19409 states. [2023-04-01 22:28:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19409 to 19250. [2023-04-01 22:28:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19250 states, 18735 states have (on average 1.488871096877502) internal successors, (27894), 18858 states have internal predecessors, (27894), 98 states have call successors, (98), 98 states have call predecessors, (98), 416 states have return successors, (3996), 293 states have call predecessors, (3996), 97 states have call successors, (3996) [2023-04-01 22:28:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19250 states to 19250 states and 31988 transitions. [2023-04-01 22:28:57,814 INFO L78 Accepts]: Start accepts. Automaton has 19250 states and 31988 transitions. Word has length 158 [2023-04-01 22:28:57,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:57,815 INFO L495 AbstractCegarLoop]: Abstraction has 19250 states and 31988 transitions. [2023-04-01 22:28:57,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 21.714285714285715) internal successors, (152), 5 states have internal predecessors, (152), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:28:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand 19250 states and 31988 transitions. [2023-04-01 22:28:57,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-04-01 22:28:57,820 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:57,821 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:28:57,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:28:57,821 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:57,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1193804925, now seen corresponding path program 1 times [2023-04-01 22:28:57,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:57,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109945872] [2023-04-01 22:28:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:57,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:58,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:28:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 153 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:28:58,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109945872] [2023-04-01 22:28:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109945872] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:58,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583209359] [2023-04-01 22:28:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:58,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:58,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:58,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:28:58,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:28:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:58,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:28:58,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:28:58,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:28:58,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583209359] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:28:58,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:28:58,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-04-01 22:28:58,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493184447] [2023-04-01 22:28:58,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:28:58,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:28:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:28:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:28:58,518 INFO L87 Difference]: Start difference. First operand 19250 states and 31988 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:29:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:02,139 INFO L93 Difference]: Finished difference Result 55552 states and 99925 transitions. [2023-04-01 22:29:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:29:02,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 218 [2023-04-01 22:29:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:02,258 INFO L225 Difference]: With dead ends: 55552 [2023-04-01 22:29:02,258 INFO L226 Difference]: Without dead ends: 36308 [2023-04-01 22:29:02,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:29:02,295 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 2890 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4131 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 5047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 4131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:02,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 103 Invalid, 5047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 4131 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 22:29:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36308 states. [2023-04-01 22:29:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36308 to 32250. [2023-04-01 22:29:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32250 states, 31325 states have (on average 1.4060335195530727) internal successors, (44044), 31566 states have internal predecessors, (44044), 162 states have call successors, (162), 162 states have call predecessors, (162), 762 states have return successors, (9215), 521 states have call predecessors, (9215), 161 states have call successors, (9215) [2023-04-01 22:29:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32250 states to 32250 states and 53421 transitions. [2023-04-01 22:29:03,048 INFO L78 Accepts]: Start accepts. Automaton has 32250 states and 53421 transitions. Word has length 218 [2023-04-01 22:29:03,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:03,049 INFO L495 AbstractCegarLoop]: Abstraction has 32250 states and 53421 transitions. [2023-04-01 22:29:03,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:29:03,049 INFO L276 IsEmpty]: Start isEmpty. Operand 32250 states and 53421 transitions. [2023-04-01 22:29:03,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-04-01 22:29:03,053 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:03,053 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:29:03,063 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 22:29:03,263 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 22:29:03,264 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:03,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1208060764, now seen corresponding path program 1 times [2023-04-01 22:29:03,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:03,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254963519] [2023-04-01 22:29:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:03,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:29:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 153 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:29:03,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:03,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254963519] [2023-04-01 22:29:03,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254963519] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:03,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327441626] [2023-04-01 22:29:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:03,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:03,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:03,595 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:29:03,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:29:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:03,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:29:03,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:29:03,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:29:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:29:04,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327441626] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:04,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:29:04,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 15 [2023-04-01 22:29:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811068765] [2023-04-01 22:29:04,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:04,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:29:04,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:29:04,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:29:04,394 INFO L87 Difference]: Start difference. First operand 32250 states and 53421 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:29:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:08,182 INFO L93 Difference]: Finished difference Result 79940 states and 137459 transitions. [2023-04-01 22:29:08,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:29:08,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 233 [2023-04-01 22:29:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:08,324 INFO L225 Difference]: With dead ends: 79940 [2023-04-01 22:29:08,325 INFO L226 Difference]: Without dead ends: 47696 [2023-04-01 22:29:08,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 462 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:29:08,370 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1482 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4019 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 5002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 4019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:08,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 117 Invalid, 5002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 4019 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 22:29:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47696 states. [2023-04-01 22:29:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47696 to 46126. [2023-04-01 22:29:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46126 states, 44737 states have (on average 1.3649104767865525) internal successors, (61062), 45125 states have internal predecessors, (61062), 230 states have call successors, (230), 230 states have call predecessors, (230), 1158 states have return successors, (17228), 770 states have call predecessors, (17228), 229 states have call successors, (17228) [2023-04-01 22:29:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46126 states to 46126 states and 78520 transitions. [2023-04-01 22:29:09,288 INFO L78 Accepts]: Start accepts. Automaton has 46126 states and 78520 transitions. Word has length 233 [2023-04-01 22:29:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:09,288 INFO L495 AbstractCegarLoop]: Abstraction has 46126 states and 78520 transitions. [2023-04-01 22:29:09,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:29:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 46126 states and 78520 transitions. [2023-04-01 22:29:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-04-01 22:29:09,294 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:09,297 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:29:09,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:29:09,503 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 22:29:09,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:09,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash 298269720, now seen corresponding path program 1 times [2023-04-01 22:29:09,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:09,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105604056] [2023-04-01 22:29:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:09,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:09,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-01 22:29:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 84 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:29:09,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:09,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105604056] [2023-04-01 22:29:09,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105604056] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:09,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91366184] [2023-04-01 22:29:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:09,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:09,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:09,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:29:09,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:29:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:10,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:29:10,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-04-01 22:29:10,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:29:10,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91366184] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:10,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:29:10,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 22:29:10,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949225674] [2023-04-01 22:29:10,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:10,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:29:10,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:10,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:29:10,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:29:10,323 INFO L87 Difference]: Start difference. First operand 46126 states and 78520 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 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 22:29:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:14,304 INFO L93 Difference]: Finished difference Result 107659 states and 187399 transitions. [2023-04-01 22:29:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:29:14,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 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 269 [2023-04-01 22:29:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:14,497 INFO L225 Difference]: With dead ends: 107659 [2023-04-01 22:29:14,497 INFO L226 Difference]: Without dead ends: 61539 [2023-04-01 22:29:14,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:29:14,539 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2253 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4275 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2253 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 5082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 4275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:14,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2253 Valid, 101 Invalid, 5082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 4275 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 22:29:14,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61539 states. [2023-04-01 22:29:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61539 to 61389. [2023-04-01 22:29:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61389 states, 59578 states have (on average 1.3115747423545605) internal successors, (78141), 60086 states have internal predecessors, (78141), 306 states have call successors, (306), 306 states have call predecessors, (306), 1504 states have return successors, (23567), 996 states have call predecessors, (23567), 305 states have call successors, (23567) [2023-04-01 22:29:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61389 states to 61389 states and 102014 transitions. [2023-04-01 22:29:15,891 INFO L78 Accepts]: Start accepts. Automaton has 61389 states and 102014 transitions. Word has length 269 [2023-04-01 22:29:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:15,891 INFO L495 AbstractCegarLoop]: Abstraction has 61389 states and 102014 transitions. [2023-04-01 22:29:15,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 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 22:29:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 61389 states and 102014 transitions. [2023-04-01 22:29:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-04-01 22:29:15,899 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:15,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:29:15,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:29:16,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:16,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:16,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1504575080, now seen corresponding path program 1 times [2023-04-01 22:29:16,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:16,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458080847] [2023-04-01 22:29:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:16,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:29:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 22:29:16,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458080847] [2023-04-01 22:29:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458080847] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522623329] [2023-04-01 22:29:16,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:16,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:16,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:16,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:29:16,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:29:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:16,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:29:16,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:16,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:29:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:17,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522623329] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:29:17,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:29:17,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 22:29:17,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465824558] [2023-04-01 22:29:17,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:29:17,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 22:29:17,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:17,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 22:29:17,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:29:17,176 INFO L87 Difference]: Start difference. First operand 61389 states and 102014 transitions. Second operand has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 11 states have internal predecessors, (484), 5 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:29:26,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:26,104 INFO L93 Difference]: Finished difference Result 194887 states and 330175 transitions. [2023-04-01 22:29:26,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:29:26,104 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 11 states have internal predecessors, (484), 5 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 295 [2023-04-01 22:29:26,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:26,724 INFO L225 Difference]: With dead ends: 194887 [2023-04-01 22:29:26,724 INFO L226 Difference]: Without dead ends: 133504 [2023-04-01 22:29:26,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 595 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2023-04-01 22:29:26,807 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 14015 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7679 mSolverCounterSat, 4594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14015 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 12273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4594 IncrementalHoareTripleChecker+Valid, 7679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:26,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14015 Valid, 240 Invalid, 12273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4594 Valid, 7679 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-01 22:29:26,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133504 states. [2023-04-01 22:29:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133504 to 114986. [2023-04-01 22:29:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114986 states, 112352 states have (on average 1.2059064369125605) internal successors, (135486), 112999 states have internal predecessors, (135486), 582 states have call successors, (582), 582 states have call predecessors, (582), 2051 states have return successors, (34604), 1404 states have call predecessors, (34604), 581 states have call successors, (34604) [2023-04-01 22:29:29,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114986 states to 114986 states and 170672 transitions. [2023-04-01 22:29:29,384 INFO L78 Accepts]: Start accepts. Automaton has 114986 states and 170672 transitions. Word has length 295 [2023-04-01 22:29:29,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:29,384 INFO L495 AbstractCegarLoop]: Abstraction has 114986 states and 170672 transitions. [2023-04-01 22:29:29,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 11 states have internal predecessors, (484), 5 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:29:29,385 INFO L276 IsEmpty]: Start isEmpty. Operand 114986 states and 170672 transitions. [2023-04-01 22:29:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-04-01 22:29:29,392 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:29,392 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:29:29,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:29:29,597 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 [2023-04-01 22:29:29,597 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:29,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:29,597 INFO L85 PathProgramCache]: Analyzing trace with hash 483440983, now seen corresponding path program 1 times [2023-04-01 22:29:29,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:29,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308019613] [2023-04-01 22:29:29,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:29,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:29,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:29,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:29:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:29,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:29:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:29:29,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308019613] [2023-04-01 22:29:29,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308019613] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648988440] [2023-04-01 22:29:29,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:29,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:29,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:29,974 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:29:29,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:29:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:30,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:29:30,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:29:30,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:29:30,437 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:29:30,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648988440] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:29:30,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:29:30,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:29:30,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757740341] [2023-04-01 22:29:30,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:29:30,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:29:30,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:30,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:29:30,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:29:30,440 INFO L87 Difference]: Start difference. First operand 114986 states and 170672 transitions. Second operand has 11 states, 11 states have (on average 42.72727272727273) internal successors, (470), 9 states have internal predecessors, (470), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:29:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:40,385 INFO L93 Difference]: Finished difference Result 273017 states and 422957 transitions. [2023-04-01 22:29:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:29:40,385 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 42.72727272727273) internal successors, (470), 9 states have internal predecessors, (470), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 364 [2023-04-01 22:29:40,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:41,031 INFO L225 Difference]: With dead ends: 273017 [2023-04-01 22:29:41,031 INFO L226 Difference]: Without dead ends: 153348 [2023-04-01 22:29:41,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 739 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:29:41,229 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 5404 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 14235 mSolverCounterSat, 1844 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5406 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 16079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1844 IncrementalHoareTripleChecker+Valid, 14235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:41,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5406 Valid, 241 Invalid, 16079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1844 Valid, 14235 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-04-01 22:29:41,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153348 states. [2023-04-01 22:29:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153348 to 145233. [2023-04-01 22:29:43,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145233 states, 141946 states have (on average 1.1243712397672354) internal successors, (159600), 142677 states have internal predecessors, (159600), 872 states have call successors, (872), 734 states have call predecessors, (872), 2414 states have return successors, (37366), 1821 states have call predecessors, (37366), 871 states have call successors, (37366) [2023-04-01 22:29:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145233 states to 145233 states and 197838 transitions. [2023-04-01 22:29:44,311 INFO L78 Accepts]: Start accepts. Automaton has 145233 states and 197838 transitions. Word has length 364 [2023-04-01 22:29:44,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:44,311 INFO L495 AbstractCegarLoop]: Abstraction has 145233 states and 197838 transitions. [2023-04-01 22:29:44,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 42.72727272727273) internal successors, (470), 9 states have internal predecessors, (470), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:29:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 145233 states and 197838 transitions. [2023-04-01 22:29:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-04-01 22:29:44,335 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:44,335 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:29:44,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:29:44,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:44,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:44,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2018027572, now seen corresponding path program 1 times [2023-04-01 22:29:44,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:44,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539599620] [2023-04-01 22:29:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:44,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:44,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:44,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:29:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:45,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-04-01 22:29:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 275 proven. 108 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-04-01 22:29:45,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:45,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539599620] [2023-04-01 22:29:45,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539599620] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:45,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105463938] [2023-04-01 22:29:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:45,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:45,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:45,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:29:45,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:29:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:45,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:29:45,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 447 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-04-01 22:29:45,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:29:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 276 proven. 109 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-04-01 22:29:45,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105463938] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:29:45,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:29:45,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:29:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58934990] [2023-04-01 22:29:45,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:29:45,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:29:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:45,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:29:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:29:45,875 INFO L87 Difference]: Start difference. First operand 145233 states and 197838 transitions. Second operand has 11 states, 11 states have (on average 68.54545454545455) internal successors, (754), 9 states have internal predecessors, (754), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:29:55,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:55,482 INFO L93 Difference]: Finished difference Result 328999 states and 458022 transitions. [2023-04-01 22:29:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 22:29:55,482 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 68.54545454545455) internal successors, (754), 9 states have internal predecessors, (754), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 473 [2023-04-01 22:29:55,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:56,152 INFO L225 Difference]: With dead ends: 328999 [2023-04-01 22:29:56,152 INFO L226 Difference]: Without dead ends: 183776 [2023-04-01 22:29:56,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 960 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:29:56,393 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 5700 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 11875 mSolverCounterSat, 1612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5703 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 13487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1612 IncrementalHoareTripleChecker+Valid, 11875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:56,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5703 Valid, 250 Invalid, 13487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1612 Valid, 11875 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-04-01 22:29:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183776 states. [2023-04-01 22:29:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183776 to 174884. [2023-04-01 22:29:59,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174884 states, 171107 states have (on average 1.0858936221194926) internal successors, (185804), 171916 states have internal predecessors, (185804), 1049 states have call successors, (1049), 886 states have call predecessors, (1049), 2727 states have return successors, (33384), 2081 states have call predecessors, (33384), 1048 states have call successors, (33384) [2023-04-01 22:29:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174884 states to 174884 states and 220237 transitions. [2023-04-01 22:29:59,934 INFO L78 Accepts]: Start accepts. Automaton has 174884 states and 220237 transitions. Word has length 473 [2023-04-01 22:29:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:59,935 INFO L495 AbstractCegarLoop]: Abstraction has 174884 states and 220237 transitions. [2023-04-01 22:29:59,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 68.54545454545455) internal successors, (754), 9 states have internal predecessors, (754), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:29:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 174884 states and 220237 transitions. [2023-04-01 22:29:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-04-01 22:29:59,958 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:59,958 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:29:59,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:30:00,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:00,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:00,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:00,162 INFO L85 PathProgramCache]: Analyzing trace with hash -852635193, now seen corresponding path program 1 times [2023-04-01 22:30:00,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:00,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843159342] [2023-04-01 22:30:00,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:00,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:30:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-04-01 22:30:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-04-01 22:30:00,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:00,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843159342] [2023-04-01 22:30:00,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843159342] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:00,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092254072] [2023-04-01 22:30:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:00,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:00,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:00,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:30:00,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:30:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:00,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:00,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-04-01 22:30:00,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:30:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-04-01 22:30:01,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092254072] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:30:01,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:30:01,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:30:01,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391022766] [2023-04-01 22:30:01,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:30:01,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:30:01,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:30:01,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:30:01,268 INFO L87 Difference]: Start difference. First operand 174884 states and 220237 transitions. Second operand has 11 states, 11 states have (on average 52.09090909090909) internal successors, (573), 9 states have internal predecessors, (573), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:30:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:08,487 INFO L93 Difference]: Finished difference Result 349864 states and 440921 transitions. [2023-04-01 22:30:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:30:08,488 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 52.09090909090909) internal successors, (573), 9 states have internal predecessors, (573), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 512 [2023-04-01 22:30:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:09,143 INFO L225 Difference]: With dead ends: 349864 [2023-04-01 22:30:09,143 INFO L226 Difference]: Without dead ends: 174990 [2023-04-01 22:30:09,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1038 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:30:09,292 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 7746 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 7578 mSolverCounterSat, 1515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7746 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 9093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1515 IncrementalHoareTripleChecker+Valid, 7578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:09,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7746 Valid, 239 Invalid, 9093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1515 Valid, 7578 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-01 22:30:09,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174990 states. [2023-04-01 22:30:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174990 to 174155. [2023-04-01 22:30:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174155 states, 170372 states have (on average 1.069031296222384) internal successors, (182133), 171184 states have internal predecessors, (182133), 1044 states have call successors, (1044), 882 states have call predecessors, (1044), 2738 states have return successors, (26635), 2088 states have call predecessors, (26635), 1043 states have call successors, (26635) [2023-04-01 22:30:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174155 states to 174155 states and 209812 transitions. [2023-04-01 22:30:12,530 INFO L78 Accepts]: Start accepts. Automaton has 174155 states and 209812 transitions. Word has length 512 [2023-04-01 22:30:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:12,533 INFO L495 AbstractCegarLoop]: Abstraction has 174155 states and 209812 transitions. [2023-04-01 22:30:12,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 52.09090909090909) internal successors, (573), 9 states have internal predecessors, (573), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:30:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand 174155 states and 209812 transitions. [2023-04-01 22:30:12,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2023-04-01 22:30:12,601 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:12,602 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:30:12,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:30:12,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 22:30:12,809 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:12,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:12,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1285402284, now seen corresponding path program 1 times [2023-04-01 22:30:12,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:12,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234790138] [2023-04-01 22:30:12,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:12,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:13,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:13,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:30:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:13,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-01 22:30:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2023-04-01 22:30:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 476 proven. 2 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-04-01 22:30:13,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:13,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234790138] [2023-04-01 22:30:13,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234790138] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:13,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532817382] [2023-04-01 22:30:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:13,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:13,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:13,821 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:30:13,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:30:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:14,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:14,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 479 proven. 2 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-04-01 22:30:14,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:30:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 479 proven. 2 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-04-01 22:30:14,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532817382] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:30:14,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:30:14,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:30:14,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462461352] [2023-04-01 22:30:14,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:30:14,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:30:14,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:30:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:30:14,476 INFO L87 Difference]: Start difference. First operand 174155 states and 209812 transitions. Second operand has 11 states, 11 states have (on average 48.63636363636363) internal successors, (535), 9 states have internal predecessors, (535), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:30:23,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:23,101 INFO L93 Difference]: Finished difference Result 353232 states and 427223 transitions. [2023-04-01 22:30:23,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 22:30:23,102 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 48.63636363636363) internal successors, (535), 9 states have internal predecessors, (535), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 563 [2023-04-01 22:30:23,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:23,730 INFO L225 Difference]: With dead ends: 353232 [2023-04-01 22:30:23,730 INFO L226 Difference]: Without dead ends: 179087 [2023-04-01 22:30:23,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 1139 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:30:23,882 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 3576 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 11928 mSolverCounterSat, 1710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3580 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 13638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1710 IncrementalHoareTripleChecker+Valid, 11928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:23,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3580 Valid, 269 Invalid, 13638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1710 Valid, 11928 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 22:30:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179087 states. [2023-04-01 22:30:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179087 to 157863. [2023-04-01 22:30:26,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157863 states, 154311 states have (on average 1.06026142011911) internal successors, (163610), 155102 states have internal predecessors, (163610), 943 states have call successors, (943), 798 states have call predecessors, (943), 2608 states have return successors, (20785), 1962 states have call predecessors, (20785), 942 states have call successors, (20785) [2023-04-01 22:30:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157863 states to 157863 states and 185338 transitions. [2023-04-01 22:30:26,953 INFO L78 Accepts]: Start accepts. Automaton has 157863 states and 185338 transitions. Word has length 563 [2023-04-01 22:30:26,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:26,954 INFO L495 AbstractCegarLoop]: Abstraction has 157863 states and 185338 transitions. [2023-04-01 22:30:26,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 48.63636363636363) internal successors, (535), 9 states have internal predecessors, (535), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:30:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 157863 states and 185338 transitions. [2023-04-01 22:30:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2023-04-01 22:30:27,004 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:27,005 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:30:27,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 22:30:27,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:27,211 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:27,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:27,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1833812606, now seen corresponding path program 1 times [2023-04-01 22:30:27,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:27,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810537548] [2023-04-01 22:30:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:27,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:30:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-04-01 22:30:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:28,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:30:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-04-01 22:30:28,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:28,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810537548] [2023-04-01 22:30:28,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810537548] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:28,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478616952] [2023-04-01 22:30:28,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:28,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:28,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:28,058 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:30:28,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 22:30:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:28,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:30:28,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-04-01 22:30:28,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:30:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-04-01 22:30:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478616952] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:30:29,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:30:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:30:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891329048] [2023-04-01 22:30:29,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:30:29,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:30:29,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:29,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:30:29,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:30:29,333 INFO L87 Difference]: Start difference. First operand 157863 states and 185338 transitions. Second operand has 11 states, 11 states have (on average 107.72727272727273) internal successors, (1185), 9 states have internal predecessors, (1185), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 22:30:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:41,011 INFO L93 Difference]: Finished difference Result 391354 states and 473405 transitions. [2023-04-01 22:30:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-04-01 22:30:41,011 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 107.72727272727273) internal successors, (1185), 9 states have internal predecessors, (1185), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 670 [2023-04-01 22:30:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:41,772 INFO L225 Difference]: With dead ends: 391354 [2023-04-01 22:30:41,772 INFO L226 Difference]: Without dead ends: 233501 [2023-04-01 22:30:41,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1376 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=1530, Unknown=0, NotChecked=0, Total=1892 [2023-04-01 22:30:41,914 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 4605 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 13197 mSolverCounterSat, 2681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4605 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 15878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2681 IncrementalHoareTripleChecker+Valid, 13197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:41,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4605 Valid, 524 Invalid, 15878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2681 Valid, 13197 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-04-01 22:30:42,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233501 states. [2023-04-01 22:30:45,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233501 to 215938. [2023-04-01 22:30:45,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215938 states, 211304 states have (on average 1.0474340286979895) internal successors, (221327), 212296 states have internal predecessors, (221327), 1287 states have call successors, (1287), 1094 states have call predecessors, (1287), 3346 states have return successors, (24139), 2547 states have call predecessors, (24139), 1286 states have call successors, (24139) [2023-04-01 22:30:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215938 states to 215938 states and 246753 transitions. [2023-04-01 22:30:46,267 INFO L78 Accepts]: Start accepts. Automaton has 215938 states and 246753 transitions. Word has length 670 [2023-04-01 22:30:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:46,268 INFO L495 AbstractCegarLoop]: Abstraction has 215938 states and 246753 transitions. [2023-04-01 22:30:46,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.72727272727273) internal successors, (1185), 9 states have internal predecessors, (1185), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 22:30:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 215938 states and 246753 transitions. [2023-04-01 22:30:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-04-01 22:30:46,358 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:46,359 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:30:46,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 22:30:46,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:30:46,561 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:46,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:46,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1847327377, now seen corresponding path program 1 times [2023-04-01 22:30:46,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:46,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488579881] [2023-04-01 22:30:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:46,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:47,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:47,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:30:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:47,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 22:30:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:30:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2023-04-01 22:30:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 263 proven. 176 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2023-04-01 22:30:47,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:47,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488579881] [2023-04-01 22:30:47,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488579881] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:47,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247968679] [2023-04-01 22:30:47,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:47,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:47,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:47,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:30:47,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 22:30:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:47,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-01 22:30:47,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 15 proven. 162 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2023-04-01 22:30:48,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:30:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2023-04-01 22:30:48,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247968679] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:48,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:30:48,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 12 [2023-04-01 22:30:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023616065] [2023-04-01 22:30:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:48,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:30:48,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:48,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:30:48,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:30:48,658 INFO L87 Difference]: Start difference. First operand 215938 states and 246753 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 22:30:53,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:53,287 INFO L93 Difference]: Finished difference Result 458768 states and 526224 transitions. [2023-04-01 22:30:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:30:53,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 768 [2023-04-01 22:30:53,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:53,290 INFO L225 Difference]: With dead ends: 458768 [2023-04-01 22:30:53,290 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 22:30:53,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1542 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:30:53,699 INFO L413 NwaCegarLoop]: 1148 mSDtfsCounter, 845 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:53,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1179 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 22:30:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 22:30:53,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 22:30:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 22:30:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 22:30:53,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 768 [2023-04-01 22:30:53,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:53,702 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 22:30:53,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 22:30:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 22:30:53,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 22:30:53,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 22:30:53,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-04-01 22:30:53,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 22:30:53,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.