/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_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:26:16,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:26:16,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:26:17,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:26:17,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 22:26:17,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 22:26:17,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 22:26:17,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 22:26:17,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 22:26:17,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 22:26:17,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 22:26:17,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 22:26:17,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 22:26:17,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 22:26:17,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 22:26:17,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 22:26:17,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 22:26:17,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:26:17,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:26:17,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:26:17,094 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 22:26:17,124 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:26:17,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:26:17,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:26:17,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:26:17,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:26:17,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:26:17,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:26:17,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:26:17,127 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:26:17,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:26:17,128 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:26:17,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:26:17,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:26:17,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:26:17,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:26:17,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:26:17,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:26:17,129 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:26:17,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:26:17,129 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:26:17,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:26:17,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:26:17,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:26:17,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:26:17,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:26:17,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:26:17,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:26:17,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:26:17,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:26:17,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:26:17,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:26:17,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:26:17,131 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:26:17,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:26:17,132 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:26:17,132 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:26:17,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:26:17,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:26:17,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:26:17,389 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:26:17,389 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:26:17,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label24.c [2023-04-01 22:26:18,624 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:26:19,037 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:26:19,038 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label24.c [2023-04-01 22:26:19,073 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4ff2b42/8215e15e5d59493dad14a4021b98077e/FLAGe868508bc [2023-04-01 22:26:19,090 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4ff2b42/8215e15e5d59493dad14a4021b98077e [2023-04-01 22:26:19,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:26:19,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:26:19,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:26:19,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:26:19,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:26:19,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:26:19" (1/1) ... [2023-04-01 22:26:19,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f83be16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:19, skipping insertion in model container [2023-04-01 22:26:19,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:26:19" (1/1) ... [2023-04-01 22:26:19,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:26:19,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:26:19,456 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_label24.c[5810,5823] [2023-04-01 22:26:20,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:26:20,134 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:26:20,164 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_label24.c[5810,5823] [2023-04-01 22:26:20,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:26:20,575 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:26:20,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20 WrapperNode [2023-04-01 22:26:20,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:26:20,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:26:20,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:26:20,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:26:20,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20" (1/1) ... [2023-04-01 22:26:20,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20" (1/1) ... [2023-04-01 22:26:20,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20" (1/1) ... [2023-04-01 22:26:20,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20" (1/1) ... [2023-04-01 22:26:20,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20" (1/1) ... [2023-04-01 22:26:20,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20" (1/1) ... [2023-04-01 22:26:20,810 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20" (1/1) ... [2023-04-01 22:26:20,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20" (1/1) ... [2023-04-01 22:26:20,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:26:20,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:26:20,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:26:20,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:26:20,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20" (1/1) ... [2023-04-01 22:26:20,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:26:20,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:20,887 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 22:26:20,913 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 22:26:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:26:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:26:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:26:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:26:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:26:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:26:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:26:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:26:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:26:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:26:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:26:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:26:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:26:21,016 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:26:21,018 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:26:24,905 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:26:24,923 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:26:24,923 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:26:24,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:26:24 BoogieIcfgContainer [2023-04-01 22:26:24,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:26:24,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:26:24,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:26:24,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:26:24,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:26:19" (1/3) ... [2023-04-01 22:26:24,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b435aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:26:24, skipping insertion in model container [2023-04-01 22:26:24,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:26:20" (2/3) ... [2023-04-01 22:26:24,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b435aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:26:24, skipping insertion in model container [2023-04-01 22:26:24,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:26:24" (3/3) ... [2023-04-01 22:26:24,937 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label24.c [2023-04-01 22:26:24,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:26:24,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:26:25,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:26:25,069 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;@69428356, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:26:25,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:26:25,077 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 22:26:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 22:26:25,088 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:25,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:25,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:25,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash -726109475, now seen corresponding path program 1 times [2023-04-01 22:26:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357324522] [2023-04-01 22:26:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:25,657 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 22:26:25,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:25,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357324522] [2023-04-01 22:26:25,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357324522] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:25,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:26:25,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:26:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246410704] [2023-04-01 22:26:25,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:25,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:26:25,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:25,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:26:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:26:25,705 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 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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 22:26:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:30,793 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:26:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:26:30,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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 52 [2023-04-01 22:26:30,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:30,816 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:26:30,816 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:26:30,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:26:30,831 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3404 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 1446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3404 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, 4.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:30,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3404 Valid, 42 Invalid, 4765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1446 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-01 22:26:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:26:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:26:30,947 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 22:26:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2023-04-01 22:26:30,956 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 52 [2023-04-01 22:26:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:30,957 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2023-04-01 22:26:30,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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 22:26:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2023-04-01 22:26:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-01 22:26:30,961 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:30,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:30,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:26:30,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:30,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:30,963 INFO L85 PathProgramCache]: Analyzing trace with hash 149743931, now seen corresponding path program 1 times [2023-04-01 22:26:30,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:30,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958985497] [2023-04-01 22:26:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:30,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:31,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958985497] [2023-04-01 22:26:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958985497] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:31,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:26:31,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:26:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390015436] [2023-04-01 22:26:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:31,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:26:31,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:26:31,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:26:31,416 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 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 22:26:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:38,464 INFO L93 Difference]: Finished difference Result 6326 states and 11703 transitions. [2023-04-01 22:26:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:26:38,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 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 125 [2023-04-01 22:26:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:38,489 INFO L225 Difference]: With dead ends: 6326 [2023-04-01 22:26:38,489 INFO L226 Difference]: Without dead ends: 4779 [2023-04-01 22:26:38,494 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 22:26:38,495 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6407 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 7566 mSolverCounterSat, 1356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s 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, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:38,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6407 Valid, 187 Invalid, 8922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1356 Valid, 7566 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 22:26:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2023-04-01 22:26:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4740. [2023-04-01 22:26:38,674 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 22:26:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 7582 transitions. [2023-04-01 22:26:38,694 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 7582 transitions. Word has length 125 [2023-04-01 22:26:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:38,695 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 7582 transitions. [2023-04-01 22:26:38,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 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 22:26:38,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 7582 transitions. [2023-04-01 22:26:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-01 22:26:38,708 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:38,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:38,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:26:38,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:38,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:38,709 INFO L85 PathProgramCache]: Analyzing trace with hash -72390825, now seen corresponding path program 1 times [2023-04-01 22:26:38,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:38,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193771748] [2023-04-01 22:26:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:38,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:39,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:39,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:39,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:39,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193771748] [2023-04-01 22:26:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193771748] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:39,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376670984] [2023-04-01 22:26:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:39,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:39,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:39,095 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 22:26:39,099 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 22:26:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:39,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:39,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:39,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:26:39,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376670984] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:39,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:26:39,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 22:26:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019924427] [2023-04-01 22:26:39,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:39,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:26:39,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:39,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:26:39,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:26:39,306 INFO L87 Difference]: Start difference. First operand 4740 states and 7582 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:26:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:42,390 INFO L93 Difference]: Finished difference Result 14177 states and 23279 transitions. [2023-04-01 22:26:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:26:42,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 127 [2023-04-01 22:26:42,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:42,437 INFO L225 Difference]: With dead ends: 14177 [2023-04-01 22:26:42,437 INFO L226 Difference]: Without dead ends: 9443 [2023-04-01 22:26:42,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:26:42,450 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 734 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:42,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1194 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 22:26:42,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9443 states. [2023-04-01 22:26:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9443 to 9443. [2023-04-01 22:26:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9443 states, 9257 states have (on average 1.4832019012639084) internal successors, (13730), 9284 states have internal predecessors, (13730), 50 states have call successors, (50), 50 states have call predecessors, (50), 135 states have return successors, (851), 108 states have call predecessors, (851), 49 states have call successors, (851) [2023-04-01 22:26:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9443 states to 9443 states and 14631 transitions. [2023-04-01 22:26:42,706 INFO L78 Accepts]: Start accepts. Automaton has 9443 states and 14631 transitions. Word has length 127 [2023-04-01 22:26:42,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:42,709 INFO L495 AbstractCegarLoop]: Abstraction has 9443 states and 14631 transitions. [2023-04-01 22:26:42,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:26:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9443 states and 14631 transitions. [2023-04-01 22:26:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-04-01 22:26:42,713 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:42,713 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:42,723 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 22:26:42,919 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 22:26:42,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:42,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:42,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2059053597, now seen corresponding path program 1 times [2023-04-01 22:26:42,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:42,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028554989] [2023-04-01 22:26:42,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:42,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:43,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:43,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:43,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:43,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028554989] [2023-04-01 22:26:43,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028554989] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:43,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:26:43,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:26:43,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540823683] [2023-04-01 22:26:43,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:43,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:26:43,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:43,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:26:43,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:26:43,300 INFO L87 Difference]: Start difference. First operand 9443 states and 14631 transitions. Second operand has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 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 22:26:48,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:48,498 INFO L93 Difference]: Finished difference Result 28090 states and 46037 transitions. [2023-04-01 22:26:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:26:48,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 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 137 [2023-04-01 22:26:48,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:48,577 INFO L225 Difference]: With dead ends: 28090 [2023-04-01 22:26:48,578 INFO L226 Difference]: Without dead ends: 18653 [2023-04-01 22:26:48,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:26:48,605 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4675 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 952 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 5924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 952 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:48,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4675 Valid, 117 Invalid, 5924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [952 Valid, 4972 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-01 22:26:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2023-04-01 22:26:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 16910. [2023-04-01 22:26:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16910 states, 16438 states have (on average 1.3982236281786105) internal successors, (22984), 16543 states have internal predecessors, (22984), 86 states have call successors, (86), 86 states have call predecessors, (86), 385 states have return successors, (2603), 280 states have call predecessors, (2603), 85 states have call successors, (2603) [2023-04-01 22:26:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16910 states to 16910 states and 25673 transitions. [2023-04-01 22:26:49,207 INFO L78 Accepts]: Start accepts. Automaton has 16910 states and 25673 transitions. Word has length 137 [2023-04-01 22:26:49,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:49,208 INFO L495 AbstractCegarLoop]: Abstraction has 16910 states and 25673 transitions. [2023-04-01 22:26:49,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 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 22:26:49,208 INFO L276 IsEmpty]: Start isEmpty. Operand 16910 states and 25673 transitions. [2023-04-01 22:26:49,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-04-01 22:26:49,211 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:49,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:49,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:26:49,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:49,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1652470635, now seen corresponding path program 1 times [2023-04-01 22:26:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:49,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975934065] [2023-04-01 22:26:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:49,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:49,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:49,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:49,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975934065] [2023-04-01 22:26:49,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975934065] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:49,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:26:49,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:26:49,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239991809] [2023-04-01 22:26:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:49,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:26:49,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:49,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:26:49,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:26:49,566 INFO L87 Difference]: Start difference. First operand 16910 states and 25673 transitions. Second operand has 8 states, 7 states have (on average 22.714285714285715) internal successors, (159), 5 states have internal predecessors, (159), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:26:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:56,407 INFO L93 Difference]: Finished difference Result 53123 states and 83331 transitions. [2023-04-01 22:26:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:26:56,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 22.714285714285715) internal successors, (159), 5 states have internal predecessors, (159), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 165 [2023-04-01 22:26:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:56,542 INFO L225 Difference]: With dead ends: 53123 [2023-04-01 22:26:56,542 INFO L226 Difference]: Without dead ends: 36219 [2023-04-01 22:26:56,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:26:56,594 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6243 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 5824 mSolverCounterSat, 1809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6243 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1809 IncrementalHoareTripleChecker+Valid, 5824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:56,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6243 Valid, 151 Invalid, 7633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1809 Valid, 5824 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-04-01 22:26:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36219 states. [2023-04-01 22:26:57,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36219 to 31516. [2023-04-01 22:26:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31516 states, 30595 states have (on average 1.247818270959307) internal successors, (38177), 30815 states have internal predecessors, (38177), 158 states have call successors, (158), 158 states have call predecessors, (158), 762 states have return successors, (5632), 542 states have call predecessors, (5632), 157 states have call successors, (5632) [2023-04-01 22:26:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31516 states to 31516 states and 43967 transitions. [2023-04-01 22:26:57,403 INFO L78 Accepts]: Start accepts. Automaton has 31516 states and 43967 transitions. Word has length 165 [2023-04-01 22:26:57,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:57,404 INFO L495 AbstractCegarLoop]: Abstraction has 31516 states and 43967 transitions. [2023-04-01 22:26:57,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 22.714285714285715) internal successors, (159), 5 states have internal predecessors, (159), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:26:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 31516 states and 43967 transitions. [2023-04-01 22:26:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-04-01 22:26:57,409 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:57,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:57,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 22:26:57,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:57,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:57,410 INFO L85 PathProgramCache]: Analyzing trace with hash 85090862, now seen corresponding path program 1 times [2023-04-01 22:26:57,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:57,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877418727] [2023-04-01 22:26:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:57,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:57,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:57,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-01 22:26:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 90 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:26:58,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:58,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877418727] [2023-04-01 22:26:58,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877418727] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:58,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73663481] [2023-04-01 22:26:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:58,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:58,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:58,029 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 22:26:58,036 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 22:26:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:58,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:26:58,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-04-01 22:26:58,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:26:58,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73663481] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:58,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:26:58,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 22:26:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564897919] [2023-04-01 22:26:58,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:58,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:26:58,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:26:58,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:26:58,348 INFO L87 Difference]: Start difference. First operand 31516 states and 43967 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 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 22:27:02,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:02,359 INFO L93 Difference]: Finished difference Result 63629 states and 92084 transitions. [2023-04-01 22:27:02,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:27:02,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 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 243 [2023-04-01 22:27:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:02,468 INFO L225 Difference]: With dead ends: 63629 [2023-04-01 22:27:02,468 INFO L226 Difference]: Without dead ends: 32119 [2023-04-01 22:27:02,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:27:02,504 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 2209 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4475 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 5384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 4475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:02,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2209 Valid, 123 Invalid, 5384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 4475 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-01 22:27:02,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32119 states. [2023-04-01 22:27:03,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32119 to 31847. [2023-04-01 22:27:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31847 states, 30795 states have (on average 1.2280889754830329) internal successors, (37819), 31077 states have internal predecessors, (37819), 158 states have call successors, (158), 158 states have call predecessors, (158), 893 states have return successors, (6270), 611 states have call predecessors, (6270), 157 states have call successors, (6270) [2023-04-01 22:27:03,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31847 states to 31847 states and 44247 transitions. [2023-04-01 22:27:03,274 INFO L78 Accepts]: Start accepts. Automaton has 31847 states and 44247 transitions. Word has length 243 [2023-04-01 22:27:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:03,275 INFO L495 AbstractCegarLoop]: Abstraction has 31847 states and 44247 transitions. [2023-04-01 22:27:03,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 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 22:27:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 31847 states and 44247 transitions. [2023-04-01 22:27:03,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-04-01 22:27:03,280 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:03,280 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-04-01 22:27:03,286 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 22:27:03,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 22:27:03,486 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:03,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash -743166467, now seen corresponding path program 1 times [2023-04-01 22:27:03,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:03,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800663328] [2023-04-01 22:27:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:03,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:03,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:03,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-01 22:27:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 90 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:27:03,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800663328] [2023-04-01 22:27:03,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800663328] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724390024] [2023-04-01 22:27:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:03,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:03,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:03,968 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 22:27:03,995 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 22:27:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:04,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:27:04,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-04-01 22:27:04,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:27:04,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724390024] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:27:04,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:27:04,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-04-01 22:27:04,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517061402] [2023-04-01 22:27:04,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:04,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:27:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:27:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:27:04,446 INFO L87 Difference]: Start difference. First operand 31847 states and 44247 transitions. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 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 22:27:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:09,665 INFO L93 Difference]: Finished difference Result 91044 states and 130941 transitions. [2023-04-01 22:27:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:27:09,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 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 246 [2023-04-01 22:27:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:09,849 INFO L225 Difference]: With dead ends: 91044 [2023-04-01 22:27:09,849 INFO L226 Difference]: Without dead ends: 59203 [2023-04-01 22:27:09,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:27:09,903 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 2239 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5075 mSolverCounterSat, 1000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 6075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 5075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:09,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 138 Invalid, 6075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1000 Valid, 5075 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 22:27:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59203 states. [2023-04-01 22:27:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59203 to 58978. [2023-04-01 22:27:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58978 states, 57239 states have (on average 1.1610440433969846) internal successors, (66457), 57713 states have internal predecessors, (66457), 294 states have call successors, (294), 294 states have call predecessors, (294), 1444 states have return successors, (11662), 970 states have call predecessors, (11662), 293 states have call successors, (11662) [2023-04-01 22:27:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58978 states to 58978 states and 78413 transitions. [2023-04-01 22:27:11,502 INFO L78 Accepts]: Start accepts. Automaton has 58978 states and 78413 transitions. Word has length 246 [2023-04-01 22:27:11,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:11,502 INFO L495 AbstractCegarLoop]: Abstraction has 58978 states and 78413 transitions. [2023-04-01 22:27:11,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 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 22:27:11,503 INFO L276 IsEmpty]: Start isEmpty. Operand 58978 states and 78413 transitions. [2023-04-01 22:27:11,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-04-01 22:27:11,507 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:11,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-04-01 22:27:11,515 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 22:27:11,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:11,713 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:11,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:11,714 INFO L85 PathProgramCache]: Analyzing trace with hash 853967428, now seen corresponding path program 1 times [2023-04-01 22:27:11,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:11,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498628369] [2023-04-01 22:27:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:11,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:11,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:12,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:27:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:27:12,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:12,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498628369] [2023-04-01 22:27:12,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498628369] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:12,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295616531] [2023-04-01 22:27:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:12,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:12,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:12,398 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 22:27:12,401 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 22:27:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:12,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:27:12,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:27:12,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:27:12,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295616531] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:27:12,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:27:12,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:27:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117859282] [2023-04-01 22:27:12,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:12,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:27:12,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:12,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:27:12,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:27:12,585 INFO L87 Difference]: Start difference. First operand 58978 states and 78413 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:15,670 INFO L93 Difference]: Finished difference Result 121814 states and 161735 transitions. [2023-04-01 22:27:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:27:15,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 273 [2023-04-01 22:27:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:15,933 INFO L225 Difference]: With dead ends: 121814 [2023-04-01 22:27:15,934 INFO L226 Difference]: Without dead ends: 62842 [2023-04-01 22:27:15,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:27:15,990 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 892 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:15,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1076 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:27:16,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62842 states. [2023-04-01 22:27:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62842 to 58163. [2023-04-01 22:27:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58163 states, 56449 states have (on average 1.1132703856578505) internal successors, (62843), 56920 states have internal predecessors, (62843), 290 states have call successors, (290), 290 states have call predecessors, (290), 1423 states have return successors, (8556), 952 states have call predecessors, (8556), 289 states have call successors, (8556) [2023-04-01 22:27:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58163 states to 58163 states and 71689 transitions. [2023-04-01 22:27:17,110 INFO L78 Accepts]: Start accepts. Automaton has 58163 states and 71689 transitions. Word has length 273 [2023-04-01 22:27:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:17,112 INFO L495 AbstractCegarLoop]: Abstraction has 58163 states and 71689 transitions. [2023-04-01 22:27:17,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 58163 states and 71689 transitions. [2023-04-01 22:27:17,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-04-01 22:27:17,124 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:17,124 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:27:17,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 22:27:17,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:17,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:17,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:17,332 INFO L85 PathProgramCache]: Analyzing trace with hash -826902265, now seen corresponding path program 1 times [2023-04-01 22:27:17,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:17,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515718932] [2023-04-01 22:27:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:17,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:17,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:17,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:27:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:27:17,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:17,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515718932] [2023-04-01 22:27:17,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515718932] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:17,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828268056] [2023-04-01 22:27:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:17,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:17,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:17,884 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 22:27:17,887 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 22:27:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:18,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:27:18,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:27:18,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:27:18,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828268056] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:18,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:18,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:27:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722547888] [2023-04-01 22:27:18,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:18,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:27:18,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:27:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:27:18,471 INFO L87 Difference]: Start difference. First operand 58163 states and 71689 transitions. Second operand has 11 states, 11 states have (on average 44.90909090909091) internal successors, (494), 9 states have internal predecessors, (494), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:27:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:26,550 INFO L93 Difference]: Finished difference Result 132763 states and 165102 transitions. [2023-04-01 22:27:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:27:26,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 44.90909090909091) internal successors, (494), 9 states have internal predecessors, (494), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 302 [2023-04-01 22:27:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:26,711 INFO L225 Difference]: With dead ends: 132763 [2023-04-01 22:27:26,711 INFO L226 Difference]: Without dead ends: 75373 [2023-04-01 22:27:26,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 607 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:27:26,751 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6577 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 9919 mSolverCounterSat, 1991 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6577 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 11910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1991 IncrementalHoareTripleChecker+Valid, 9919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:26,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6577 Valid, 227 Invalid, 11910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1991 Valid, 9919 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-04-01 22:27:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75373 states. [2023-04-01 22:27:27,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75373 to 75282. [2023-04-01 22:27:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75282 states, 73294 states have (on average 1.0811799055857232) internal successors, (79244), 73814 states have internal predecessors, (79244), 378 states have call successors, (378), 378 states have call predecessors, (378), 1609 states have return successors, (8673), 1089 states have call predecessors, (8673), 377 states have call successors, (8673) [2023-04-01 22:27:27,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75282 states to 75282 states and 88295 transitions. [2023-04-01 22:27:27,967 INFO L78 Accepts]: Start accepts. Automaton has 75282 states and 88295 transitions. Word has length 302 [2023-04-01 22:27:27,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:27,967 INFO L495 AbstractCegarLoop]: Abstraction has 75282 states and 88295 transitions. [2023-04-01 22:27:27,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 44.90909090909091) internal successors, (494), 9 states have internal predecessors, (494), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:27:27,968 INFO L276 IsEmpty]: Start isEmpty. Operand 75282 states and 88295 transitions. [2023-04-01 22:27:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-04-01 22:27:27,979 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:27,979 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:27,985 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 22:27:28,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:28,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:28,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash -940881164, now seen corresponding path program 1 times [2023-04-01 22:27:28,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:28,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070247364] [2023-04-01 22:27:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:28,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:29,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:27:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 188 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:27:30,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:30,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070247364] [2023-04-01 22:27:30,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070247364] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:30,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256252118] [2023-04-01 22:27:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:30,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:30,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:30,293 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 22:27:30,316 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 22:27:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:30,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 22:27:30,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-04-01 22:27:31,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:27:31,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256252118] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:27:31,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:27:31,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-04-01 22:27:31,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139996427] [2023-04-01 22:27:31,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:31,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:27:31,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:31,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:27:31,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:27:31,403 INFO L87 Difference]: Start difference. First operand 75282 states and 88295 transitions. Second operand has 5 states, 5 states have (on average 65.0) internal successors, (325), 4 states have internal predecessors, (325), 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 22:27:35,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:35,795 INFO L93 Difference]: Finished difference Result 152376 states and 179013 transitions. [2023-04-01 22:27:35,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 22:27:35,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 4 states have internal predecessors, (325), 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 377 [2023-04-01 22:27:35,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:35,949 INFO L225 Difference]: With dead ends: 152376 [2023-04-01 22:27:35,949 INFO L226 Difference]: Without dead ends: 77867 [2023-04-01 22:27:36,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:27:36,013 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 2027 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4874 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 5215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 4874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:36,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2027 Valid, 160 Invalid, 5215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 4874 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 22:27:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77867 states. [2023-04-01 22:27:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77867 to 77702. [2023-04-01 22:27:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77702 states, 75642 states have (on average 1.0784352608339283) internal successors, (81575), 76187 states have internal predecessors, (81575), 390 states have call successors, (390), 390 states have call predecessors, (390), 1669 states have return successors, (8897), 1124 states have call predecessors, (8897), 389 states have call successors, (8897) [2023-04-01 22:27:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77702 states to 77702 states and 90862 transitions. [2023-04-01 22:27:37,407 INFO L78 Accepts]: Start accepts. Automaton has 77702 states and 90862 transitions. Word has length 377 [2023-04-01 22:27:37,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:37,408 INFO L495 AbstractCegarLoop]: Abstraction has 77702 states and 90862 transitions. [2023-04-01 22:27:37,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 4 states have internal predecessors, (325), 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 22:27:37,408 INFO L276 IsEmpty]: Start isEmpty. Operand 77702 states and 90862 transitions. [2023-04-01 22:27:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-04-01 22:27:37,424 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:37,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:27:37,432 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 22:27:37,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:37,630 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:37,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:37,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1647715002, now seen corresponding path program 1 times [2023-04-01 22:27:37,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:37,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684178533] [2023-04-01 22:27:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:37,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:38,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:27:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:39,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 22:27:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 143 proven. 283 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:27:39,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:39,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684178533] [2023-04-01 22:27:39,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684178533] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:39,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18061942] [2023-04-01 22:27:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:39,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:39,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:39,270 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 22:27:39,272 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 22:27:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:39,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:27:39,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-04-01 22:27:40,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 212 proven. 148 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-04-01 22:27:42,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18061942] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:42,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:42,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 5] total 21 [2023-04-01 22:27:42,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083783703] [2023-04-01 22:27:42,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:42,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 22:27:42,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 22:27:42,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:27:42,248 INFO L87 Difference]: Start difference. First operand 77702 states and 90862 transitions. Second operand has 21 states, 21 states have (on average 44.76190476190476) internal successors, (940), 19 states have internal predecessors, (940), 6 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 22:28:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:03,594 INFO L93 Difference]: Finished difference Result 180651 states and 213533 transitions. [2023-04-01 22:28:03,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-04-01 22:28:03,595 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 44.76190476190476) internal successors, (940), 19 states have internal predecessors, (940), 6 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 452 [2023-04-01 22:28:03,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:03,809 INFO L225 Difference]: With dead ends: 180651 [2023-04-01 22:28:03,810 INFO L226 Difference]: Without dead ends: 98297 [2023-04-01 22:28:03,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1154 GetRequests, 1011 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7801 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3335, Invalid=17257, Unknown=0, NotChecked=0, Total=20592 [2023-04-01 22:28:03,882 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 23621 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 18998 mSolverCounterSat, 4172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23635 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 23170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4172 IncrementalHoareTripleChecker+Valid, 18998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:03,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23635 Valid, 1007 Invalid, 23170 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4172 Valid, 18998 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2023-04-01 22:28:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98297 states. [2023-04-01 22:28:05,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98297 to 93724. [2023-04-01 22:28:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93724 states, 91525 states have (on average 1.0543348811800055) internal successors, (96498), 92068 states have internal predecessors, (96498), 474 states have call successors, (474), 474 states have call predecessors, (474), 1724 states have return successors, (8414), 1181 states have call predecessors, (8414), 473 states have call successors, (8414) [2023-04-01 22:28:05,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93724 states to 93724 states and 105386 transitions. [2023-04-01 22:28:05,667 INFO L78 Accepts]: Start accepts. Automaton has 93724 states and 105386 transitions. Word has length 452 [2023-04-01 22:28:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:05,667 INFO L495 AbstractCegarLoop]: Abstraction has 93724 states and 105386 transitions. [2023-04-01 22:28:05,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 44.76190476190476) internal successors, (940), 19 states have internal predecessors, (940), 6 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 22:28:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 93724 states and 105386 transitions. [2023-04-01 22:28:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-04-01 22:28:05,679 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:05,679 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:05,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 22:28:05,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:05,885 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:05,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:05,885 INFO L85 PathProgramCache]: Analyzing trace with hash 946118835, now seen corresponding path program 1 times [2023-04-01 22:28:05,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:05,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492543130] [2023-04-01 22:28:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:05,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:07,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:07,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:28:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:07,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:28:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 424 proven. 99 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:28:08,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:08,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492543130] [2023-04-01 22:28:08,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492543130] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:08,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044319306] [2023-04-01 22:28:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:08,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:08,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:08,169 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 22:28:08,171 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 22:28:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:08,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 22:28:08,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 11 proven. 130 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-04-01 22:28:08,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:28:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-04-01 22:28:09,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044319306] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:09,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:28:09,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 6] total 18 [2023-04-01 22:28:09,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452966842] [2023-04-01 22:28:09,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:28:09,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:28:09,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:09,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:28:09,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-04-01 22:28:09,074 INFO L87 Difference]: Start difference. First operand 93724 states and 105386 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:28:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:12,426 INFO L93 Difference]: Finished difference Result 203532 states and 230585 transitions. [2023-04-01 22:28:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:28:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 499 [2023-04-01 22:28:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:12,684 INFO L225 Difference]: With dead ends: 203532 [2023-04-01 22:28:12,684 INFO L226 Difference]: Without dead ends: 110581 [2023-04-01 22:28:12,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1000 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-04-01 22:28:12,856 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 841 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:12,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1183 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2102 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 22:28:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110581 states. [2023-04-01 22:28:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110581 to 104433. [2023-04-01 22:28:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104433 states, 102133 states have (on average 1.0527743236759912) internal successors, (107523), 102672 states have internal predecessors, (107523), 530 states have call successors, (530), 530 states have call predecessors, (530), 1769 states have return successors, (9168), 1230 states have call predecessors, (9168), 529 states have call successors, (9168) [2023-04-01 22:28:15,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104433 states to 104433 states and 117221 transitions. [2023-04-01 22:28:15,109 INFO L78 Accepts]: Start accepts. Automaton has 104433 states and 117221 transitions. Word has length 499 [2023-04-01 22:28:15,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:15,109 INFO L495 AbstractCegarLoop]: Abstraction has 104433 states and 117221 transitions. [2023-04-01 22:28:15,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:28:15,110 INFO L276 IsEmpty]: Start isEmpty. Operand 104433 states and 117221 transitions. [2023-04-01 22:28:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2023-04-01 22:28:15,176 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:15,176 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:15,182 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 22:28:15,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 22:28:15,378 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:15,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2039114665, now seen corresponding path program 1 times [2023-04-01 22:28:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:15,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303968523] [2023-04-01 22:28:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:15,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:16,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:16,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:28:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:28:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:16,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2023-04-01 22:28:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:28:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:16,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 185 proven. 4 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2023-04-01 22:28:16,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:16,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303968523] [2023-04-01 22:28:16,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303968523] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:16,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792213014] [2023-04-01 22:28:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:16,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:16,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:16,572 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 22:28:16,573 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 22:28:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:16,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:28:16,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2023-04-01 22:28:16,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:28:16,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792213014] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:28:16,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:28:16,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:28:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104809792] [2023-04-01 22:28:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:28:16,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:28:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:16,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:28:16,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:28:16,950 INFO L87 Difference]: Start difference. First operand 104433 states and 117221 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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 22:28:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:20,659 INFO L93 Difference]: Finished difference Result 245939 states and 278985 transitions. [2023-04-01 22:28:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:28:20,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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 962 [2023-04-01 22:28:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:21,128 INFO L225 Difference]: With dead ends: 245939 [2023-04-01 22:28:21,129 INFO L226 Difference]: Without dead ends: 141496 [2023-04-01 22:28:21,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 975 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:28:21,205 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 728 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:21,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1287 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:28:21,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141496 states. [2023-04-01 22:28:23,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141496 to 131492. [2023-04-01 22:28:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131492 states, 128822 states have (on average 1.0542143422707302) internal successors, (135806), 129417 states have internal predecessors, (135806), 670 states have call successors, (670), 670 states have call predecessors, (670), 1999 states have return successors, (12677), 1404 states have call predecessors, (12677), 669 states have call successors, (12677) [2023-04-01 22:28:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131492 states to 131492 states and 149153 transitions. [2023-04-01 22:28:23,510 INFO L78 Accepts]: Start accepts. Automaton has 131492 states and 149153 transitions. Word has length 962 [2023-04-01 22:28:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:23,512 INFO L495 AbstractCegarLoop]: Abstraction has 131492 states and 149153 transitions. [2023-04-01 22:28:23,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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 22:28:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 131492 states and 149153 transitions. [2023-04-01 22:28:23,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2023-04-01 22:28:23,609 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:23,609 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:23,624 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 22:28:23,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:28:23,818 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:23,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:23,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1004829889, now seen corresponding path program 1 times [2023-04-01 22:28:23,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:23,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135204431] [2023-04-01 22:28:23,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:23,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:25,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:25,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:28:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:25,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:28:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2023-04-01 22:28:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:26,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:28:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:28:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 519 proven. 16 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-04-01 22:28:26,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:26,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135204431] [2023-04-01 22:28:26,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135204431] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:26,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703167033] [2023-04-01 22:28:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:26,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:26,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:26,681 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 22:28:26,682 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 22:28:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:26,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:28:26,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-04-01 22:28:27,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:28:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-04-01 22:28:29,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703167033] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:28:29,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:28:29,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-04-01 22:28:29,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720603374] [2023-04-01 22:28:29,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:28:29,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:28:29,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:29,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:28:29,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:28:29,304 INFO L87 Difference]: Start difference. First operand 131492 states and 149153 transitions. Second operand has 12 states, 12 states have (on average 173.75) internal successors, (2085), 10 states have internal predecessors, (2085), 8 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 22:28:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:40,528 INFO L93 Difference]: Finished difference Result 276985 states and 313596 transitions. [2023-04-01 22:28:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 22:28:40,528 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 173.75) internal successors, (2085), 10 states have internal predecessors, (2085), 8 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 1030 [2023-04-01 22:28:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:41,090 INFO L225 Difference]: With dead ends: 276985 [2023-04-01 22:28:41,090 INFO L226 Difference]: Without dead ends: 145481 [2023-04-01 22:28:41,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2115 GetRequests, 2085 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=570, Unknown=0, NotChecked=0, Total=756 [2023-04-01 22:28:41,190 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 5946 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 18349 mSolverCounterSat, 1683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5951 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 20032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1683 IncrementalHoareTripleChecker+Valid, 18349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:41,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5951 Valid, 340 Invalid, 20032 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1683 Valid, 18349 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-04-01 22:28:41,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145481 states. [2023-04-01 22:28:43,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145481 to 132350. [2023-04-01 22:28:43,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132350 states, 129638 states have (on average 1.0442385720236351) internal successors, (135373), 130244 states have internal predecessors, (135373), 674 states have call successors, (674), 674 states have call predecessors, (674), 2037 states have return successors, (10565), 1431 states have call predecessors, (10565), 673 states have call successors, (10565) [2023-04-01 22:28:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132350 states to 132350 states and 146612 transitions. [2023-04-01 22:28:43,378 INFO L78 Accepts]: Start accepts. Automaton has 132350 states and 146612 transitions. Word has length 1030 [2023-04-01 22:28:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:43,379 INFO L495 AbstractCegarLoop]: Abstraction has 132350 states and 146612 transitions. [2023-04-01 22:28:43,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 173.75) internal successors, (2085), 10 states have internal predecessors, (2085), 8 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 22:28:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 132350 states and 146612 transitions. [2023-04-01 22:28:43,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2023-04-01 22:28:43,448 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:43,448 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:43,459 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 22:28:43,655 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,SelfDestructingSolverStorable13 [2023-04-01 22:28:43,656 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:43,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:43,657 INFO L85 PathProgramCache]: Analyzing trace with hash 317218908, now seen corresponding path program 1 times [2023-04-01 22:28:43,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:43,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150384419] [2023-04-01 22:28:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:43,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:28:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:28:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2023-04-01 22:28:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:28:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:28:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,976 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 415 proven. 151 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-04-01 22:28:44,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:44,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150384419] [2023-04-01 22:28:44,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150384419] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:44,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119593015] [2023-04-01 22:28:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:44,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:44,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:44,985 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 22:28:44,989 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 22:28:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:45,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:28:45,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 743 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-04-01 22:28:45,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:28:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 417 proven. 152 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-04-01 22:28:45,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119593015] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:28:45,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:28:45,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:28:45,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122902975] [2023-04-01 22:28:45,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:28:45,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:28:45,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:45,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:28:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:28:45,830 INFO L87 Difference]: Start difference. First operand 132350 states and 146612 transitions. Second operand has 12 states, 12 states have (on average 143.25) internal successors, (1719), 10 states have internal predecessors, (1719), 4 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-01 22:28:54,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:54,480 INFO L93 Difference]: Finished difference Result 277636 states and 309844 transitions. [2023-04-01 22:28:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 22:28:54,481 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 143.25) internal successors, (1719), 10 states have internal predecessors, (1719), 4 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 1067 [2023-04-01 22:28:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:55,021 INFO L225 Difference]: With dead ends: 277636 [2023-04-01 22:28:55,022 INFO L226 Difference]: Without dead ends: 146059 [2023-04-01 22:28:55,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2172 GetRequests, 2151 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-04-01 22:28:55,139 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 5266 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 9595 mSolverCounterSat, 2233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5266 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 11828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2233 IncrementalHoareTripleChecker+Valid, 9595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:55,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5266 Valid, 188 Invalid, 11828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2233 Valid, 9595 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 22:28:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146059 states. [2023-04-01 22:28:57,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146059 to 143958. [2023-04-01 22:28:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143958 states, 140793 states have (on average 1.038822952845667) internal successors, (146259), 141552 states have internal predecessors, (146259), 730 states have call successors, (730), 730 states have call predecessors, (730), 2434 states have return successors, (10268), 1675 states have call predecessors, (10268), 729 states have call successors, (10268) [2023-04-01 22:28:57,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143958 states to 143958 states and 157257 transitions. [2023-04-01 22:28:57,605 INFO L78 Accepts]: Start accepts. Automaton has 143958 states and 157257 transitions. Word has length 1067 [2023-04-01 22:28:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:57,606 INFO L495 AbstractCegarLoop]: Abstraction has 143958 states and 157257 transitions. [2023-04-01 22:28:57,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.25) internal successors, (1719), 10 states have internal predecessors, (1719), 4 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-01 22:28:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 143958 states and 157257 transitions. [2023-04-01 22:28:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1106 [2023-04-01 22:28:57,699 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:57,700 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:57,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 22:28:57,909 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,SelfDestructingSolverStorable14 [2023-04-01 22:28:57,910 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:58,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:58,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1784023992, now seen corresponding path program 1 times [2023-04-01 22:28:58,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:58,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189926395] [2023-04-01 22:28:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:58,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:58,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:28:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 22:28:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2023-04-01 22:28:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:59,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:28:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:59,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:28:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:59,329 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 453 proven. 151 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-04-01 22:28:59,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:59,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189926395] [2023-04-01 22:28:59,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189926395] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482165728] [2023-04-01 22:28:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:59,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:59,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:59,333 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:28:59,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 22:28:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:59,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:28:59,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 819 proven. 2 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-04-01 22:28:59,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:29:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 455 proven. 152 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-04-01 22:29:00,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482165728] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:29:00,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:29:00,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-04-01 22:29:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337155925] [2023-04-01 22:29:00,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:29:00,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 22:29:00,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 22:29:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:29:00,203 INFO L87 Difference]: Start difference. First operand 143958 states and 157257 transitions. Second operand has 10 states, 10 states have (on average 171.7) internal successors, (1717), 8 states have internal predecessors, (1717), 4 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 22:29:10,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:10,733 INFO L93 Difference]: Finished difference Result 352720 states and 390550 transitions. [2023-04-01 22:29:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 22:29:10,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 171.7) internal successors, (1717), 8 states have internal predecessors, (1717), 4 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 1105 [2023-04-01 22:29:10,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:10,735 INFO L225 Difference]: With dead ends: 352720 [2023-04-01 22:29:10,736 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 22:29:11,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2250 GetRequests, 2228 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:29:11,061 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 2734 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 11091 mSolverCounterSat, 1887 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 12978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1887 IncrementalHoareTripleChecker+Valid, 11091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:11,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2739 Valid, 186 Invalid, 12978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1887 Valid, 11091 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-01 22:29:11,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 22:29:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 22:29:11,062 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 22:29:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 22:29:11,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1105 [2023-04-01 22:29:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:11,064 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 22:29:11,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.7) internal successors, (1717), 8 states have internal predecessors, (1717), 4 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 22:29:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 22:29:11,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 22:29:11,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 22:29:11,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 22:29:11,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-01 22:29:11,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.