/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/Problem05_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 21:03:31,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 21:03:31,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 21:03:32,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 21:03:32,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 21:03:32,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 21:03:32,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 21:03:32,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 21:03:32,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 21:03:32,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 21:03:32,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 21:03:32,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 21:03:32,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 21:03:32,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 21:03:32,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 21:03:32,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 21:03:32,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 21:03:32,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 21:03:32,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 21:03:32,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 21:03:32,058 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 21:03:32,082 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 21:03:32,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 21:03:32,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 21:03:32,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 21:03:32,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 21:03:32,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 21:03:32,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 21:03:32,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 21:03:32,085 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 21:03:32,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 21:03:32,086 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 21:03:32,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 21:03:32,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 21:03:32,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 21:03:32,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 21:03:32,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 21:03:32,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 21:03:32,087 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 21:03:32,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 21:03:32,087 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 21:03:32,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 21:03:32,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 21:03:32,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 21:03:32,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 21:03:32,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:03:32,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 21:03:32,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 21:03:32,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 21:03:32,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 21:03:32,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 21:03:32,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 21:03:32,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 21:03:32,090 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 21:03:32,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 21:03:32,090 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 21:03:32,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 21:03:32,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 21:03:32,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 21:03:32,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 21:03:32,350 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 21:03:32,350 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 21:03:32,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label55.c [2023-04-01 21:03:33,428 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 21:03:33,886 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 21:03:33,886 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label55.c [2023-04-01 21:03:33,929 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54335b962/2494e882ec4047e782241025a0fdba8e/FLAGc962a5916 [2023-04-01 21:03:33,945 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54335b962/2494e882ec4047e782241025a0fdba8e [2023-04-01 21:03:33,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 21:03:33,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 21:03:33,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 21:03:33,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 21:03:33,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 21:03:33,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:03:33" (1/1) ... [2023-04-01 21:03:33,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1e431b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:33, skipping insertion in model container [2023-04-01 21:03:33,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:03:33" (1/1) ... [2023-04-01 21:03:33,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 21:03:34,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 21:03:35,286 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/Problem05_label55.c[374550,374563] [2023-04-01 21:03:35,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:03:35,318 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 21:03:35,929 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/Problem05_label55.c[374550,374563] [2023-04-01 21:03:35,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:03:35,969 INFO L208 MainTranslator]: Completed translation [2023-04-01 21:03:35,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35 WrapperNode [2023-04-01 21:03:35,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 21:03:35,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 21:03:35,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 21:03:35,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 21:03:35,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35" (1/1) ... [2023-04-01 21:03:35,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35" (1/1) ... [2023-04-01 21:03:36,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35" (1/1) ... [2023-04-01 21:03:36,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35" (1/1) ... [2023-04-01 21:03:36,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35" (1/1) ... [2023-04-01 21:03:36,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35" (1/1) ... [2023-04-01 21:03:36,239 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35" (1/1) ... [2023-04-01 21:03:36,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35" (1/1) ... [2023-04-01 21:03:36,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 21:03:36,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 21:03:36,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 21:03:36,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 21:03:36,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35" (1/1) ... [2023-04-01 21:03:36,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:03:36,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:03:36,351 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 21:03:36,367 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 21:03:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 21:03:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 21:03:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 21:03:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 21:03:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 21:03:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 21:03:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 21:03:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 21:03:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 21:03:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-01 21:03:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-01 21:03:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 21:03:36,389 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 21:03:36,389 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 21:03:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 21:03:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 21:03:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 21:03:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 21:03:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 21:03:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 21:03:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 21:03:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 21:03:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 21:03:36,506 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 21:03:36,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 21:03:41,572 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 21:03:41,589 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 21:03:41,589 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 21:03:41,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:03:41 BoogieIcfgContainer [2023-04-01 21:03:41,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 21:03:41,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 21:03:41,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 21:03:41,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 21:03:41,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:03:33" (1/3) ... [2023-04-01 21:03:41,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12dd10de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:03:41, skipping insertion in model container [2023-04-01 21:03:41,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:35" (2/3) ... [2023-04-01 21:03:41,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12dd10de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:03:41, skipping insertion in model container [2023-04-01 21:03:41,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:03:41" (3/3) ... [2023-04-01 21:03:41,601 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label55.c [2023-04-01 21:03:41,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 21:03:41,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 21:03:41,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 21:03:41,708 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;@532dc2e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 21:03:41,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 21:03:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 21:03:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1656 [2023-04-01 21:03:41,794 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:03:41,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:41,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:03:41,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:03:41,801 INFO L85 PathProgramCache]: Analyzing trace with hash 888581298, now seen corresponding path program 1 times [2023-04-01 21:03:41,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:03:41,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132425818] [2023-04-01 21:03:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:03:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:03:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:48,538 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 21:03:48,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:03:48,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132425818] [2023-04-01 21:03:48,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132425818] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:03:48,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:03:48,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 21:03:48,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078596048] [2023-04-01 21:03:48,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:03:48,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:03:48,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:03:48,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:03:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 21:03:48,590 INFO L87 Difference]: Start difference. First operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 4 states have (on average 411.0) internal successors, (1644), 3 states have internal predecessors, (1644), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:04:01,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:04:01,774 INFO L93 Difference]: Finished difference Result 8111 states and 15415 transitions. [2023-04-01 21:04:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:04:01,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 411.0) internal successors, (1644), 3 states have internal predecessors, (1644), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1655 [2023-04-01 21:04:01,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:04:01,819 INFO L225 Difference]: With dead ends: 8111 [2023-04-01 21:04:01,820 INFO L226 Difference]: Without dead ends: 5821 [2023-04-01 21:04:01,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 21:04:01,834 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 9151 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10684 mSolverCounterSat, 5989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9151 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 16673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5989 IncrementalHoareTripleChecker+Valid, 10684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-04-01 21:04:01,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9151 Valid, 505 Invalid, 16673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5989 Valid, 10684 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2023-04-01 21:04:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5821 states. [2023-04-01 21:04:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5821 to 5769. [2023-04-01 21:04:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5700 states have (on average 1.7549122807017543) internal successors, (10003), 5703 states have internal predecessors, (10003), 26 states have call successors, (26), 26 states have call predecessors, (26), 42 states have return successors, (96), 39 states have call predecessors, (96), 25 states have call successors, (96) [2023-04-01 21:04:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 10125 transitions. [2023-04-01 21:04:02,026 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 10125 transitions. Word has length 1655 [2023-04-01 21:04:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:04:02,030 INFO L495 AbstractCegarLoop]: Abstraction has 5769 states and 10125 transitions. [2023-04-01 21:04:02,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 411.0) internal successors, (1644), 3 states have internal predecessors, (1644), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:04:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 10125 transitions. [2023-04-01 21:04:02,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1678 [2023-04-01 21:04:02,084 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:04:02,085 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:02,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 21:04:02,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:04:02,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:04:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash 784971761, now seen corresponding path program 1 times [2023-04-01 21:04:02,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:04:02,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806021605] [2023-04-01 21:04:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:02,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:04:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:05,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:04:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:04:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:04:05,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:04:05,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806021605] [2023-04-01 21:04:05,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806021605] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:04:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152866427] [2023-04-01 21:04:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:05,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:04:05,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:04:05,767 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 21:04:05,768 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 21:04:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:06,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 21:04:06,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:04:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:04:08,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:04:08,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152866427] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:04:08,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:04:08,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 21:04:08,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446689284] [2023-04-01 21:04:08,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:04:08,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:04:08,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:04:08,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:04:08,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 21:04:08,251 INFO L87 Difference]: Start difference. First operand 5769 states and 10125 transitions. Second operand has 3 states, 3 states have (on average 554.6666666666666) internal successors, (1664), 3 states have internal predecessors, (1664), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 21:04:13,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:04:13,614 INFO L93 Difference]: Finished difference Result 16917 states and 30089 transitions. [2023-04-01 21:04:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:04:13,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 554.6666666666666) internal successors, (1664), 3 states have internal predecessors, (1664), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1677 [2023-04-01 21:04:13,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:04:13,660 INFO L225 Difference]: With dead ends: 16917 [2023-04-01 21:04:13,660 INFO L226 Difference]: Without dead ends: 11154 [2023-04-01 21:04:13,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1692 GetRequests, 1688 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 21:04:13,676 INFO L413 NwaCegarLoop]: 4109 mSDtfsCounter, 437 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 6669 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 4580 SdHoareTripleChecker+Invalid, 7539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 6669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 21:04:13,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 4580 Invalid, 7539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 6669 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 21:04:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2023-04-01 21:04:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 11112. [2023-04-01 21:04:13,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11112 states, 10979 states have (on average 1.6035158028964387) internal successors, (17605), 10985 states have internal predecessors, (17605), 50 states have call successors, (50), 50 states have call predecessors, (50), 82 states have return successors, (322), 76 states have call predecessors, (322), 49 states have call successors, (322) [2023-04-01 21:04:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11112 states to 11112 states and 17977 transitions. [2023-04-01 21:04:13,913 INFO L78 Accepts]: Start accepts. Automaton has 11112 states and 17977 transitions. Word has length 1677 [2023-04-01 21:04:13,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:04:13,915 INFO L495 AbstractCegarLoop]: Abstraction has 11112 states and 17977 transitions. [2023-04-01 21:04:13,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.6666666666666) internal successors, (1664), 3 states have internal predecessors, (1664), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 21:04:13,926 INFO L276 IsEmpty]: Start isEmpty. Operand 11112 states and 17977 transitions. [2023-04-01 21:04:14,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2023-04-01 21:04:14,012 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:04:14,013 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:14,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 21:04:14,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:04:14,219 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:04:14,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:04:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash -248814424, now seen corresponding path program 1 times [2023-04-01 21:04:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:04:14,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584638762] [2023-04-01 21:04:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:04:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:15,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:04:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:04:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:16,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-01 21:04:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 21:04:16,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:04:16,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584638762] [2023-04-01 21:04:16,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584638762] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:04:16,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:04:16,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 21:04:16,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65810111] [2023-04-01 21:04:16,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:04:16,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 21:04:16,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:04:16,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 21:04:16,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 21:04:16,041 INFO L87 Difference]: Start difference. First operand 11112 states and 17977 transitions. Second operand has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 4 states have internal predecessors, (1669), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 21:04:31,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:04:31,907 INFO L93 Difference]: Finished difference Result 53807 states and 90166 transitions. [2023-04-01 21:04:31,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 21:04:31,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 4 states have internal predecessors, (1669), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 1692 [2023-04-01 21:04:31,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:04:32,032 INFO L225 Difference]: With dead ends: 53807 [2023-04-01 21:04:32,033 INFO L226 Difference]: Without dead ends: 42701 [2023-04-01 21:04:32,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-04-01 21:04:32,067 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 14376 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 15688 mSolverCounterSat, 4976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14376 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 20664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4976 IncrementalHoareTripleChecker+Valid, 15688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-04-01 21:04:32,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14376 Valid, 926 Invalid, 20664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4976 Valid, 15688 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-04-01 21:04:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42701 states. [2023-04-01 21:04:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42701 to 42691. [2023-04-01 21:04:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42691 states, 42130 states have (on average 1.365630192262046) internal successors, (57534), 42154 states have internal predecessors, (57534), 194 states have call successors, (194), 194 states have call predecessors, (194), 366 states have return successors, (3077), 342 states have call predecessors, (3077), 193 states have call successors, (3077) [2023-04-01 21:04:32,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42691 states to 42691 states and 60805 transitions. [2023-04-01 21:04:32,860 INFO L78 Accepts]: Start accepts. Automaton has 42691 states and 60805 transitions. Word has length 1692 [2023-04-01 21:04:32,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:04:32,861 INFO L495 AbstractCegarLoop]: Abstraction has 42691 states and 60805 transitions. [2023-04-01 21:04:32,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 4 states have internal predecessors, (1669), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 21:04:32,862 INFO L276 IsEmpty]: Start isEmpty. Operand 42691 states and 60805 transitions. [2023-04-01 21:04:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1779 [2023-04-01 21:04:32,950 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:04:32,951 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:32,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 21:04:32,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:04:32,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:04:32,952 INFO L85 PathProgramCache]: Analyzing trace with hash -183985202, now seen corresponding path program 1 times [2023-04-01 21:04:32,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:04:32,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316394379] [2023-04-01 21:04:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:32,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:04:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:34,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:04:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:04:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:34,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-01 21:04:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 117 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:04:34,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:04:34,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316394379] [2023-04-01 21:04:34,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316394379] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:04:34,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228265642] [2023-04-01 21:04:34,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:34,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:04:34,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:04:34,801 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 21:04:34,804 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 21:04:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:35,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 2258 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:04:35,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:04:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-01 21:04:35,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:04:35,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228265642] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:04:35,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:04:35,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 21:04:35,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560060692] [2023-04-01 21:04:35,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:04:35,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:04:35,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:04:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:04:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:04:35,384 INFO L87 Difference]: Start difference. First operand 42691 states and 60805 transitions. Second operand has 5 states, 5 states have (on average 330.6) internal successors, (1653), 4 states have internal predecessors, (1653), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:04:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:04:43,626 INFO L93 Difference]: Finished difference Result 126711 states and 190695 transitions. [2023-04-01 21:04:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:04:43,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 330.6) internal successors, (1653), 4 states have internal predecessors, (1653), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1778 [2023-04-01 21:04:43,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:04:43,958 INFO L225 Difference]: With dead ends: 126711 [2023-04-01 21:04:43,958 INFO L226 Difference]: Without dead ends: 84026 [2023-04-01 21:04:44,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1790 GetRequests, 1778 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 21:04:44,040 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 5956 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 10841 mSolverCounterSat, 3770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5956 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 14611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3770 IncrementalHoareTripleChecker+Valid, 10841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-01 21:04:44,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5956 Valid, 1986 Invalid, 14611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3770 Valid, 10841 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-01 21:04:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84026 states. [2023-04-01 21:04:45,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84026 to 83805. [2023-04-01 21:04:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83805 states, 82417 states have (on average 1.2939927442153925) internal successors, (106647), 82519 states have internal predecessors, (106647), 378 states have call successors, (378), 378 states have call predecessors, (378), 1009 states have return successors, (12896), 907 states have call predecessors, (12896), 377 states have call successors, (12896) [2023-04-01 21:04:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83805 states to 83805 states and 119921 transitions. [2023-04-01 21:04:45,921 INFO L78 Accepts]: Start accepts. Automaton has 83805 states and 119921 transitions. Word has length 1778 [2023-04-01 21:04:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:04:45,921 INFO L495 AbstractCegarLoop]: Abstraction has 83805 states and 119921 transitions. [2023-04-01 21:04:45,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.6) internal successors, (1653), 4 states have internal predecessors, (1653), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:04:45,922 INFO L276 IsEmpty]: Start isEmpty. Operand 83805 states and 119921 transitions. [2023-04-01 21:04:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1781 [2023-04-01 21:04:46,286 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:04:46,288 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:46,298 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 21:04:46,496 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,SelfDestructingSolverStorable3 [2023-04-01 21:04:46,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:04:46,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:04:46,497 INFO L85 PathProgramCache]: Analyzing trace with hash 10909618, now seen corresponding path program 1 times [2023-04-01 21:04:46,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:04:46,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384167220] [2023-04-01 21:04:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:04:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:47,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:04:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:04:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 21:04:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 21:04:47,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:04:47,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384167220] [2023-04-01 21:04:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384167220] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:04:47,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609271001] [2023-04-01 21:04:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:47,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:04:47,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:04:47,973 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 21:04:47,995 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 21:04:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:48,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 2252 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 21:04:48,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:04:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 21:04:50,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:04:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609271001] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:04:50,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:04:50,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 21:04:50,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305496432] [2023-04-01 21:04:50,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:04:50,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:04:50,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:04:50,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:04:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:04:50,032 INFO L87 Difference]: Start difference. First operand 83805 states and 119921 transitions. Second operand has 3 states, 3 states have (on average 586.3333333333334) internal successors, (1759), 3 states have internal predecessors, (1759), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:04:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:04:56,325 INFO L93 Difference]: Finished difference Result 204392 states and 303194 transitions. [2023-04-01 21:04:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:04:56,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 586.3333333333334) internal successors, (1759), 3 states have internal predecessors, (1759), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 1780 [2023-04-01 21:04:56,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:04:56,754 INFO L225 Difference]: With dead ends: 204392 [2023-04-01 21:04:56,754 INFO L226 Difference]: Without dead ends: 120593 [2023-04-01 21:04:56,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1790 GetRequests, 1784 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:04:56,856 INFO L413 NwaCegarLoop]: 4119 mSDtfsCounter, 212 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 6395 mSolverCounterSat, 1199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 7594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1199 IncrementalHoareTripleChecker+Valid, 6395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 21:04:56,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 4399 Invalid, 7594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1199 Valid, 6395 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 21:04:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120593 states. [2023-04-01 21:04:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120593 to 120513. [2023-04-01 21:04:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120513 states, 118656 states have (on average 1.2492836434735706) internal successors, (148235), 118782 states have internal predecessors, (148235), 546 states have call successors, (546), 546 states have call predecessors, (546), 1310 states have return successors, (20978), 1184 states have call predecessors, (20978), 545 states have call successors, (20978) [2023-04-01 21:04:59,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120513 states to 120513 states and 169759 transitions. [2023-04-01 21:04:59,441 INFO L78 Accepts]: Start accepts. Automaton has 120513 states and 169759 transitions. Word has length 1780 [2023-04-01 21:04:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:04:59,443 INFO L495 AbstractCegarLoop]: Abstraction has 120513 states and 169759 transitions. [2023-04-01 21:04:59,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 586.3333333333334) internal successors, (1759), 3 states have internal predecessors, (1759), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:04:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand 120513 states and 169759 transitions. [2023-04-01 21:04:59,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1813 [2023-04-01 21:04:59,817 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:04:59,817 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:59,827 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 21:05:00,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:05:00,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:05:00,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:05:00,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1478927870, now seen corresponding path program 1 times [2023-04-01 21:05:00,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:05:00,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077976439] [2023-04-01 21:05:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:05:00,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:05:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:01,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:05:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:05:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 21:05:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-01 21:05:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 160 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 21:05:01,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:05:01,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077976439] [2023-04-01 21:05:01,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077976439] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:05:01,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437189633] [2023-04-01 21:05:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:05:01,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:05:01,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:05:01,443 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 21:05:01,447 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 21:05:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:01,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:05:01,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:05:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-04-01 21:05:02,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:05:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 161 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 21:05:02,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437189633] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:05:02,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:05:02,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 21:05:02,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102945220] [2023-04-01 21:05:02,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:05:02,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 21:05:02,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:05:02,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 21:05:02,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:05:02,138 INFO L87 Difference]: Start difference. First operand 120513 states and 169759 transitions. Second operand has 11 states, 11 states have (on average 164.54545454545453) internal successors, (1810), 9 states have internal predecessors, (1810), 4 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 21:05:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:05:23,791 INFO L93 Difference]: Finished difference Result 375399 states and 612253 transitions. [2023-04-01 21:05:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-04-01 21:05:23,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 164.54545454545453) internal successors, (1810), 9 states have internal predecessors, (1810), 4 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 1812 [2023-04-01 21:05:23,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:05:25,018 INFO L225 Difference]: With dead ends: 375399 [2023-04-01 21:05:25,018 INFO L226 Difference]: Without dead ends: 254892 [2023-04-01 21:05:25,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3713 GetRequests, 3663 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=450, Invalid=2000, Unknown=0, NotChecked=0, Total=2450 [2023-04-01 21:05:25,220 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 16511 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 25273 mSolverCounterSat, 9484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16521 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 34757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9484 IncrementalHoareTripleChecker+Valid, 25273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2023-04-01 21:05:25,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16521 Valid, 1882 Invalid, 34757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9484 Valid, 25273 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2023-04-01 21:05:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254892 states. [2023-04-01 21:05:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254892 to 249584. [2023-04-01 21:05:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249584 states, 244350 states have (on average 1.1174953959484346) internal successors, (273060), 244943 states have internal predecessors, (273060), 1114 states have call successors, (1114), 1114 states have call predecessors, (1114), 4119 states have return successors, (52903), 3526 states have call predecessors, (52903), 1113 states have call successors, (52903) [2023-04-01 21:05:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249584 states to 249584 states and 327077 transitions. [2023-04-01 21:05:31,389 INFO L78 Accepts]: Start accepts. Automaton has 249584 states and 327077 transitions. Word has length 1812 [2023-04-01 21:05:31,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:05:31,390 INFO L495 AbstractCegarLoop]: Abstraction has 249584 states and 327077 transitions. [2023-04-01 21:05:31,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 164.54545454545453) internal successors, (1810), 9 states have internal predecessors, (1810), 4 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 21:05:31,390 INFO L276 IsEmpty]: Start isEmpty. Operand 249584 states and 327077 transitions. [2023-04-01 21:05:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1900 [2023-04-01 21:05:31,993 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:05:31,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:32,009 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 21:05:32,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:05:32,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:05:32,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:05:32,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1066643752, now seen corresponding path program 1 times [2023-04-01 21:05:32,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:05:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951577847] [2023-04-01 21:05:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:05:32,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:05:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:05:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:05:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:34,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 21:05:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 238 proven. 105 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:05:34,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:05:34,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951577847] [2023-04-01 21:05:34,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951577847] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:05:34,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404671771] [2023-04-01 21:05:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:05:34,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:05:34,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:05:34,219 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 21:05:34,219 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 21:05:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:34,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 2371 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:05:34,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:05:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:05:34,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:05:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:05:35,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404671771] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:05:35,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:05:35,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 21:05:35,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747067602] [2023-04-01 21:05:35,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:05:35,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 21:05:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:05:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 21:05:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:05:35,210 INFO L87 Difference]: Start difference. First operand 249584 states and 327077 transitions. Second operand has 12 states, 12 states have (on average 179.5) internal successors, (2154), 10 states have internal predecessors, (2154), 5 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 21:06:00,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:06:00,134 INFO L93 Difference]: Finished difference Result 556842 states and 757439 transitions. [2023-04-01 21:06:00,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-04-01 21:06:00,135 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 179.5) internal successors, (2154), 10 states have internal predecessors, (2154), 5 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 1899 [2023-04-01 21:06:00,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:06:01,436 INFO L225 Difference]: With dead ends: 556842 [2023-04-01 21:06:01,436 INFO L226 Difference]: Without dead ends: 307264 [2023-04-01 21:06:01,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3885 GetRequests, 3833 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=2246, Unknown=0, NotChecked=0, Total=2756 [2023-04-01 21:06:01,667 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 32975 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 24199 mSolverCounterSat, 14477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32975 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 38676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14477 IncrementalHoareTripleChecker+Valid, 24199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2023-04-01 21:06:01,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32975 Valid, 2241 Invalid, 38676 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14477 Valid, 24199 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time] [2023-04-01 21:06:01,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307264 states. [2023-04-01 21:06:06,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307264 to 256052. [2023-04-01 21:06:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256052 states, 250260 states have (on average 1.0838727723167905) internal successors, (271250), 251005 states have internal predecessors, (271250), 1138 states have call successors, (1138), 1138 states have call predecessors, (1138), 4653 states have return successors, (44707), 3908 states have call predecessors, (44707), 1137 states have call successors, (44707) [2023-04-01 21:06:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256052 states to 256052 states and 317095 transitions. [2023-04-01 21:06:07,084 INFO L78 Accepts]: Start accepts. Automaton has 256052 states and 317095 transitions. Word has length 1899 [2023-04-01 21:06:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:06:07,085 INFO L495 AbstractCegarLoop]: Abstraction has 256052 states and 317095 transitions. [2023-04-01 21:06:07,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 179.5) internal successors, (2154), 10 states have internal predecessors, (2154), 5 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 21:06:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 256052 states and 317095 transitions. [2023-04-01 21:06:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1999 [2023-04-01 21:06:07,610 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:06:07,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:07,619 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 21:06:07,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:06:07,812 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:06:07,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:06:07,812 INFO L85 PathProgramCache]: Analyzing trace with hash 300375650, now seen corresponding path program 1 times [2023-04-01 21:06:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:06:07,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619903886] [2023-04-01 21:06:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:06:07,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:06:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:10,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:06:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:10,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:06:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:10,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-01 21:06:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:10,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:06:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 334 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:06:10,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:06:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619903886] [2023-04-01 21:06:10,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619903886] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:06:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758067768] [2023-04-01 21:06:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:06:10,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:06:10,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:06:10,200 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 21:06:10,201 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 21:06:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:10,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:06:10,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:06:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-04-01 21:06:10,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:06:10,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758067768] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:06:10,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:06:10,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 21:06:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947220211] [2023-04-01 21:06:10,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:06:10,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:06:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:06:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:06:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 21:06:10,869 INFO L87 Difference]: Start difference. First operand 256052 states and 317095 transitions. Second operand has 5 states, 5 states have (on average 337.2) internal successors, (1686), 4 states have internal predecessors, (1686), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 21:06:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:06:20,733 INFO L93 Difference]: Finished difference Result 590521 states and 740905 transitions. [2023-04-01 21:06:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:06:20,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 337.2) internal successors, (1686), 4 states have internal predecessors, (1686), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 1998 [2023-04-01 21:06:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:06:21,913 INFO L225 Difference]: With dead ends: 590521 [2023-04-01 21:06:21,914 INFO L226 Difference]: Without dead ends: 334475 [2023-04-01 21:06:22,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2012 GetRequests, 2001 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 21:06:22,212 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 6462 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 9314 mSolverCounterSat, 3555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6462 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 12869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3555 IncrementalHoareTripleChecker+Valid, 9314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 21:06:22,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6462 Valid, 1520 Invalid, 12869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3555 Valid, 9314 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 21:06:22,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334475 states. [2023-04-01 21:06:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334475 to 314682. [2023-04-01 21:06:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314682 states, 307796 states have (on average 1.0589383877633238) internal successors, (325937), 308696 states have internal predecessors, (325937), 1402 states have call successors, (1402), 1402 states have call predecessors, (1402), 5483 states have return successors, (43741), 4583 states have call predecessors, (43741), 1401 states have call successors, (43741) [2023-04-01 21:06:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314682 states to 314682 states and 371080 transitions. [2023-04-01 21:06:28,383 INFO L78 Accepts]: Start accepts. Automaton has 314682 states and 371080 transitions. Word has length 1998 [2023-04-01 21:06:28,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:06:28,383 INFO L495 AbstractCegarLoop]: Abstraction has 314682 states and 371080 transitions. [2023-04-01 21:06:28,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 337.2) internal successors, (1686), 4 states have internal predecessors, (1686), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 21:06:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 314682 states and 371080 transitions. [2023-04-01 21:06:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2112 [2023-04-01 21:06:28,979 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:06:28,980 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:28,988 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 21:06:29,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:06:29,190 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:06:29,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:06:29,191 INFO L85 PathProgramCache]: Analyzing trace with hash 303935139, now seen corresponding path program 1 times [2023-04-01 21:06:29,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:06:29,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323746904] [2023-04-01 21:06:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:06:29,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:06:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:06:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:06:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 21:06:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 21:06:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:37,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:06:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 597 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-04-01 21:06:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:06:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323746904] [2023-04-01 21:06:37,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323746904] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:06:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053471139] [2023-04-01 21:06:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:06:37,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:06:37,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:06:37,282 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 21:06:37,290 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 21:06:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:37,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 21:06:37,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:06:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-04-01 21:06:39,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:06:39,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053471139] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:06:39,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:06:39,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-01 21:06:39,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575550248] [2023-04-01 21:06:39,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:06:39,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:06:39,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:06:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:06:39,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:06:39,405 INFO L87 Difference]: Start difference. First operand 314682 states and 371080 transitions. Second operand has 3 states, 3 states have (on average 649.0) internal successors, (1947), 3 states have internal predecessors, (1947), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 21:06:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:06:46,881 INFO L93 Difference]: Finished difference Result 638204 states and 753397 transitions. [2023-04-01 21:06:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:06:46,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 649.0) internal successors, (1947), 3 states have internal predecessors, (1947), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 2111 [2023-04-01 21:06:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:06:48,010 INFO L225 Difference]: With dead ends: 638204 [2023-04-01 21:06:48,010 INFO L226 Difference]: Without dead ends: 323528 [2023-04-01 21:06:48,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2129 GetRequests, 2119 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:06:48,444 INFO L413 NwaCegarLoop]: 3436 mSDtfsCounter, 373 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 6149 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 3655 SdHoareTripleChecker+Invalid, 7272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 6149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-01 21:06:48,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 3655 Invalid, 7272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 6149 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-01 21:06:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323528 states. [2023-04-01 21:06:54,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323528 to 318022. [2023-04-01 21:06:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318022 states, 311143 states have (on average 1.0517093426495212) internal successors, (327232), 312030 states have internal predecessors, (327232), 1418 states have call successors, (1418), 1418 states have call predecessors, (1418), 5460 states have return successors, (40176), 4573 states have call predecessors, (40176), 1417 states have call successors, (40176) [2023-04-01 21:06:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318022 states to 318022 states and 368826 transitions. [2023-04-01 21:06:55,428 INFO L78 Accepts]: Start accepts. Automaton has 318022 states and 368826 transitions. Word has length 2111 [2023-04-01 21:06:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:06:55,430 INFO L495 AbstractCegarLoop]: Abstraction has 318022 states and 368826 transitions. [2023-04-01 21:06:55,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 649.0) internal successors, (1947), 3 states have internal predecessors, (1947), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 21:06:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 318022 states and 368826 transitions. [2023-04-01 21:06:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2140 [2023-04-01 21:06:55,913 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:06:55,914 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:55,921 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 21:06:56,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:06:56,121 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:06:56,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:06:56,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1540665076, now seen corresponding path program 1 times [2023-04-01 21:06:56,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:06:56,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213824721] [2023-04-01 21:06:56,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:06:56,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:06:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat