/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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:56:44,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:56:44,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:56:44,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:56:44,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:56:44,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:56:44,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:56:44,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:56:44,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:56:44,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:56:44,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:56:44,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:56:44,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:56:44,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:56:44,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:56:44,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:56:44,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 20:56:44,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:56:44,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:56:44,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:56:44,358 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 20:56:44,385 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:56:44,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:56:44,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:56:44,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:56:44,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:56:44,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:56:44,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:56:44,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:56:44,388 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:56:44,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:56:44,389 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:56:44,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:56:44,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:56:44,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:56:44,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:56:44,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:56:44,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:56:44,390 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:56:44,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:56:44,390 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:56:44,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:56:44,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:56:44,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:56:44,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:56:44,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:56:44,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:56:44,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:56:44,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:56:44,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:56:44,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:56:44,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:56:44,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:56:44,392 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:56:44,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:56:44,392 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:56:44,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:56:44,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:56:44,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:56:44,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:56:44,630 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:56:44,631 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:56:44,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label28.c [2023-04-01 20:56:45,726 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:56:46,303 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:56:46,303 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label28.c [2023-04-01 20:56:46,359 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb950502d/035bcf466b8f45e48a4ed860ed402165/FLAG7b1b116ba [2023-04-01 20:56:46,373 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb950502d/035bcf466b8f45e48a4ed860ed402165 [2023-04-01 20:56:46,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:56:46,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:56:46,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:56:46,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:56:46,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:56:46,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:56:46" (1/1) ... [2023-04-01 20:56:46,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c3854a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:46, skipping insertion in model container [2023-04-01 20:56:46,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:56:46" (1/1) ... [2023-04-01 20:56:46,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:56:46,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:56:48,097 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_label28.c[380793,380806] [2023-04-01 20:56:48,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:56:48,124 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:56:48,852 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_label28.c[380793,380806] [2023-04-01 20:56:48,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:56:48,900 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:56:48,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48 WrapperNode [2023-04-01 20:56:48,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:56:48,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:56:48,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:56:48,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:56:48,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48" (1/1) ... [2023-04-01 20:56:48,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48" (1/1) ... [2023-04-01 20:56:48,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48" (1/1) ... [2023-04-01 20:56:48,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48" (1/1) ... [2023-04-01 20:56:49,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48" (1/1) ... [2023-04-01 20:56:49,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48" (1/1) ... [2023-04-01 20:56:49,304 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48" (1/1) ... [2023-04-01 20:56:49,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48" (1/1) ... [2023-04-01 20:56:49,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:56:49,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:56:49,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:56:49,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:56:49,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48" (1/1) ... [2023-04-01 20:56:49,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:56:49,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:56:49,474 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 20:56:49,495 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 20:56:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:56:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:56:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:56:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:56:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:56:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:56:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:56:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 20:56:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 20:56:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-01 20:56:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-01 20:56:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:56:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:56:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:56:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:56:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:56:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:56:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:56:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:56:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:56:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:56:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:56:49,620 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:56:49,622 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:56:55,717 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:56:55,737 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:56:55,737 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:56:55,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:56:55 BoogieIcfgContainer [2023-04-01 20:56:55,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:56:55,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:56:55,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:56:55,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:56:55,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:56:46" (1/3) ... [2023-04-01 20:56:55,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13189621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:56:55, skipping insertion in model container [2023-04-01 20:56:55,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:56:48" (2/3) ... [2023-04-01 20:56:55,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13189621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:56:55, skipping insertion in model container [2023-04-01 20:56:55,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:56:55" (3/3) ... [2023-04-01 20:56:55,748 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label28.c [2023-04-01 20:56:55,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:56:55,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:56:55,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:56:55,846 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;@724d5baa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:56:55,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:56:55,856 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 20:56:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1702 [2023-04-01 20:56:55,949 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:56:55,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:55,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:56:55,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:56:55,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2118701174, now seen corresponding path program 1 times [2023-04-01 20:56:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:56:55,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638541829] [2023-04-01 20:56:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:56:55,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:56:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:57:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:04,180 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 20:57:04,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:57:04,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638541829] [2023-04-01 20:57:04,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638541829] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:57:04,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:57:04,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:57:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734370385] [2023-04-01 20:57:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:57:04,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:57:04,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:57:04,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:57:04,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:57:04,252 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 422.5) internal successors, (1690), 3 states have internal predecessors, (1690), 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 20:57:17,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:57:17,530 INFO L93 Difference]: Finished difference Result 8111 states and 15415 transitions. [2023-04-01 20:57:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:57:17,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 422.5) internal successors, (1690), 3 states have internal predecessors, (1690), 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 1701 [2023-04-01 20:57:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:57:17,580 INFO L225 Difference]: With dead ends: 8111 [2023-04-01 20:57:17,580 INFO L226 Difference]: Without dead ends: 5821 [2023-04-01 20:57:17,592 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 20:57:17,597 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 6707 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 11483 mSolverCounterSat, 3615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6707 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 15098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3615 IncrementalHoareTripleChecker+Valid, 11483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:57:17,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6707 Valid, 503 Invalid, 15098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3615 Valid, 11483 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2023-04-01 20:57:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5821 states. [2023-04-01 20:57:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5821 to 5769. [2023-04-01 20:57:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5700 states have (on average 1.7456140350877194) internal successors, (9950), 5703 states have internal predecessors, (9950), 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 20:57:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 10072 transitions. [2023-04-01 20:57:17,822 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 10072 transitions. Word has length 1701 [2023-04-01 20:57:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:57:17,825 INFO L495 AbstractCegarLoop]: Abstraction has 5769 states and 10072 transitions. [2023-04-01 20:57:17,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 422.5) internal successors, (1690), 3 states have internal predecessors, (1690), 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 20:57:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 10072 transitions. [2023-04-01 20:57:17,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2023-04-01 20:57:17,906 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:57:17,907 INFO L195 NwaCegarLoop]: trace histogram [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, 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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] [2023-04-01 20:57:17,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:57:17,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:57:17,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:57:17,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2082083277, now seen corresponding path program 1 times [2023-04-01 20:57:17,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:57:17,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920833287] [2023-04-01 20:57:17,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:17,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:57:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:57:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:57:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:57:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:57:20,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920833287] [2023-04-01 20:57:20,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920833287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:57:20,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:57:20,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:57:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479268062] [2023-04-01 20:57:20,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:57:20,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:57:20,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:57:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:57:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:57:20,587 INFO L87 Difference]: Start difference. First operand 5769 states and 10072 transitions. Second operand has 8 states, 7 states have (on average 242.42857142857142) internal successors, (1697), 5 states have internal predecessors, (1697), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:57:35,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:57:35,485 INFO L93 Difference]: Finished difference Result 22483 states and 40438 transitions. [2023-04-01 20:57:35,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:57:35,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 242.42857142857142) internal successors, (1697), 5 states have internal predecessors, (1697), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1710 [2023-04-01 20:57:35,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:57:35,574 INFO L225 Difference]: With dead ends: 22483 [2023-04-01 20:57:35,574 INFO L226 Difference]: Without dead ends: 16720 [2023-04-01 20:57:35,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:57:35,596 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 10104 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 18523 mSolverCounterSat, 4011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10104 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 22534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4011 IncrementalHoareTripleChecker+Valid, 18523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:57:35,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10104 Valid, 1417 Invalid, 22534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4011 Valid, 18523 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-04-01 20:57:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16720 states. [2023-04-01 20:57:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16720 to 16655. [2023-04-01 20:57:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16655 states, 16332 states have (on average 1.545860886602988) internal successors, (25247), 16356 states have internal predecessors, (25247), 74 states have call successors, (74), 74 states have call predecessors, (74), 248 states have return successors, (1200), 224 states have call predecessors, (1200), 73 states have call successors, (1200) [2023-04-01 20:57:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16655 states to 16655 states and 26521 transitions. [2023-04-01 20:57:36,033 INFO L78 Accepts]: Start accepts. Automaton has 16655 states and 26521 transitions. Word has length 1710 [2023-04-01 20:57:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:57:36,034 INFO L495 AbstractCegarLoop]: Abstraction has 16655 states and 26521 transitions. [2023-04-01 20:57:36,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 242.42857142857142) internal successors, (1697), 5 states have internal predecessors, (1697), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:57:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 16655 states and 26521 transitions. [2023-04-01 20:57:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1720 [2023-04-01 20:57:36,149 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:57:36,150 INFO L195 NwaCegarLoop]: trace histogram [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, 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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] [2023-04-01 20:57:36,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:57:36,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:57:36,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:57:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash 81414977, now seen corresponding path program 1 times [2023-04-01 20:57:36,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:57:36,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536002156] [2023-04-01 20:57:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:57:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:37,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:57:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:57:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:57:38,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:57:38,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536002156] [2023-04-01 20:57:38,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536002156] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:57:38,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:57:38,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:57:38,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905458920] [2023-04-01 20:57:38,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:57:38,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:57:38,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:57:38,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:57:38,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:57:38,154 INFO L87 Difference]: Start difference. First operand 16655 states and 26521 transitions. Second operand has 7 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 4 states have internal predecessors, (1706), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:57:48,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:57:48,650 INFO L93 Difference]: Finished difference Result 50200 states and 84566 transitions. [2023-04-01 20:57:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:57:48,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 4 states have internal predecessors, (1706), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1719 [2023-04-01 20:57:48,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:57:48,768 INFO L225 Difference]: With dead ends: 50200 [2023-04-01 20:57:48,768 INFO L226 Difference]: Without dead ends: 33551 [2023-04-01 20:57:48,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:57:48,989 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 11260 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 13117 mSolverCounterSat, 3384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11260 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 16501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3384 IncrementalHoareTripleChecker+Valid, 13117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:57:48,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11260 Valid, 939 Invalid, 16501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3384 Valid, 13117 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-04-01 20:57:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33551 states. [2023-04-01 20:57:49,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33551 to 33420. [2023-04-01 20:57:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33420 states, 32533 states have (on average 1.3891125933667352) internal successors, (45192), 32622 states have internal predecessors, (45192), 146 states have call successors, (146), 146 states have call predecessors, (146), 740 states have return successors, (5527), 651 states have call predecessors, (5527), 145 states have call successors, (5527) [2023-04-01 20:57:49,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33420 states to 33420 states and 50865 transitions. [2023-04-01 20:57:49,794 INFO L78 Accepts]: Start accepts. Automaton has 33420 states and 50865 transitions. Word has length 1719 [2023-04-01 20:57:49,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:57:49,794 INFO L495 AbstractCegarLoop]: Abstraction has 33420 states and 50865 transitions. [2023-04-01 20:57:49,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 4 states have internal predecessors, (1706), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:57:49,795 INFO L276 IsEmpty]: Start isEmpty. Operand 33420 states and 50865 transitions. [2023-04-01 20:57:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1742 [2023-04-01 20:57:49,911 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:57:49,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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] [2023-04-01 20:57:49,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:57:49,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:57:49,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:57:49,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1123278464, now seen corresponding path program 1 times [2023-04-01 20:57:49,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:57:49,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134846287] [2023-04-01 20:57:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:49,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:57:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:52,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:57:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:57:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:52,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-01 20:57:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 20:57:52,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:57:52,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134846287] [2023-04-01 20:57:52,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134846287] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:57:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516670222] [2023-04-01 20:57:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:52,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:57:52,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:57:52,585 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 20:57:52,608 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 20:57:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:53,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 2217 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:57:53,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:57:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:57:53,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:57:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:57:53,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516670222] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:57:53,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:57:53,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 20:57:53,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938686166] [2023-04-01 20:57:53,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:57:53,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 20:57:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:57:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 20:57:53,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 20:57:53,558 INFO L87 Difference]: Start difference. First operand 33420 states and 50865 transitions. Second operand has 15 states, 15 states have (on average 117.8) internal successors, (1767), 13 states have internal predecessors, (1767), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 20:58:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:58:33,057 INFO L93 Difference]: Finished difference Result 168430 states and 319750 transitions. [2023-04-01 20:58:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-04-01 20:58:33,058 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 117.8) internal successors, (1767), 13 states have internal predecessors, (1767), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 1741 [2023-04-01 20:58:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:58:34,160 INFO L225 Difference]: With dead ends: 168430 [2023-04-01 20:58:34,160 INFO L226 Difference]: Without dead ends: 135016 [2023-04-01 20:58:34,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3621 GetRequests, 3525 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3297 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1593, Invalid=7719, Unknown=0, NotChecked=0, Total=9312 [2023-04-01 20:58:34,377 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 48749 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 48219 mSolverCounterSat, 17662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48749 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 65881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17662 IncrementalHoareTripleChecker+Valid, 48219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:58:34,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48749 Valid, 3063 Invalid, 65881 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17662 Valid, 48219 Invalid, 0 Unknown, 0 Unchecked, 34.8s Time] [2023-04-01 20:58:34,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135016 states. [2023-04-01 20:58:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135016 to 134121. [2023-04-01 20:58:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134121 states, 129767 states have (on average 1.143002458252098) internal successors, (148324), 130395 states have internal predecessors, (148324), 578 states have call successors, (578), 578 states have call predecessors, (578), 3775 states have return successors, (43957), 3147 states have call predecessors, (43957), 577 states have call successors, (43957) [2023-04-01 20:58:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134121 states to 134121 states and 192859 transitions. [2023-04-01 20:58:39,296 INFO L78 Accepts]: Start accepts. Automaton has 134121 states and 192859 transitions. Word has length 1741 [2023-04-01 20:58:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:58:39,301 INFO L495 AbstractCegarLoop]: Abstraction has 134121 states and 192859 transitions. [2023-04-01 20:58:39,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 117.8) internal successors, (1767), 13 states have internal predecessors, (1767), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 20:58:39,307 INFO L276 IsEmpty]: Start isEmpty. Operand 134121 states and 192859 transitions. [2023-04-01 20:58:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1761 [2023-04-01 20:58:40,181 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:58:40,186 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, 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, 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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] [2023-04-01 20:58:40,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 20:58:40,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:58:40,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:58:40,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:58:40,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1628068508, now seen corresponding path program 1 times [2023-04-01 20:58:40,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:58:40,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267228690] [2023-04-01 20:58:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:58:40,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:58:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:58:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:42,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:58:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:42,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-01 20:58:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 53 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:58:42,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:58:42,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267228690] [2023-04-01 20:58:42,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267228690] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:58:42,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431734390] [2023-04-01 20:58:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:58:42,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:58:42,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:58:42,672 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 20:58:42,700 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 20:58:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:43,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 2234 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:58:43,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:58:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:58:43,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:58:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:58:43,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431734390] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:58:43,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:58:43,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:58:43,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794104538] [2023-04-01 20:58:43,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:58:43,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:58:43,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:58:43,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:58:43,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:58:43,516 INFO L87 Difference]: Start difference. First operand 134121 states and 192859 transitions. Second operand has 12 states, 12 states have (on average 150.16666666666666) internal successors, (1802), 10 states have internal predecessors, (1802), 4 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:59:10,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:59:10,154 INFO L93 Difference]: Finished difference Result 389550 states and 579765 transitions. [2023-04-01 20:59:10,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-01 20:59:10,155 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 150.16666666666666) internal successors, (1802), 10 states have internal predecessors, (1802), 4 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 1760 [2023-04-01 20:59:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:59:11,097 INFO L225 Difference]: With dead ends: 389550 [2023-04-01 20:59:11,097 INFO L226 Difference]: Without dead ends: 255435 [2023-04-01 20:59:11,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3582 GetRequests, 3544 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=1193, Unknown=0, NotChecked=0, Total=1482 [2023-04-01 20:59:11,371 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 29542 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 36919 mSolverCounterSat, 4202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29550 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 41121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4202 IncrementalHoareTripleChecker+Valid, 36919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:59:11,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29550 Valid, 1635 Invalid, 41121 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4202 Valid, 36919 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2023-04-01 20:59:11,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255435 states. [2023-04-01 20:59:14,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255435 to 225968. [2023-04-01 20:59:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225968 states, 220685 states have (on average 1.0665065591227314) internal successors, (235362), 221357 states have internal predecessors, (235362), 1003 states have call successors, (1003), 1002 states have call predecessors, (1003), 4279 states have return successors, (30228), 3608 states have call predecessors, (30228), 1002 states have call successors, (30228) [2023-04-01 20:59:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225968 states to 225968 states and 266593 transitions. [2023-04-01 20:59:16,092 INFO L78 Accepts]: Start accepts. Automaton has 225968 states and 266593 transitions. Word has length 1760 [2023-04-01 20:59:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:59:16,093 INFO L495 AbstractCegarLoop]: Abstraction has 225968 states and 266593 transitions. [2023-04-01 20:59:16,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 150.16666666666666) internal successors, (1802), 10 states have internal predecessors, (1802), 4 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:59:16,094 INFO L276 IsEmpty]: Start isEmpty. Operand 225968 states and 266593 transitions. [2023-04-01 20:59:16,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1871 [2023-04-01 20:59:16,770 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:59:16,771 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:16,781 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 20:59:16,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:59:16,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:59:16,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:59:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash -65403006, now seen corresponding path program 1 times [2023-04-01 20:59:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:59:16,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816228905] [2023-04-01 20:59:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:59:16,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:59:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:59:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:59:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-01 20:59:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:18,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-01 20:59:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 160 proven. 45 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-01 20:59:19,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:59:19,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816228905] [2023-04-01 20:59:19,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816228905] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:59:19,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640898615] [2023-04-01 20:59:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:59:19,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:59:19,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:59:19,009 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 20:59:19,021 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 20:59:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:19,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:59:19,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:59:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-04-01 20:59:19,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:59:19,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640898615] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:59:19,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:59:19,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 20:59:19,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201655974] [2023-04-01 20:59:19,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:59:19,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:59:19,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:59:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:59:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:59:19,751 INFO L87 Difference]: Start difference. First operand 225968 states and 266593 transitions. Second operand has 5 states, 5 states have (on average 346.2) internal successors, (1731), 4 states have internal predecessors, (1731), 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 20:59:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:59:29,851 INFO L93 Difference]: Finished difference Result 507452 states and 604361 transitions. [2023-04-01 20:59:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:59:29,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 346.2) internal successors, (1731), 4 states have internal predecessors, (1731), 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 1870 [2023-04-01 20:59:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:59:30,653 INFO L225 Difference]: With dead ends: 507452 [2023-04-01 20:59:30,653 INFO L226 Difference]: Without dead ends: 281494 [2023-04-01 20:59:30,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1884 GetRequests, 1873 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 20:59:30,953 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 6365 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 9486 mSolverCounterSat, 3118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6365 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 12604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3118 IncrementalHoareTripleChecker+Valid, 9486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:59:30,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6365 Valid, 1442 Invalid, 12604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3118 Valid, 9486 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-04-01 20:59:31,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281494 states. [2023-04-01 20:59:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281494 to 277290. [2023-04-01 20:59:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277290 states, 271124 states have (on average 1.0613446245998142) internal successors, (287756), 271903 states have internal predecessors, (287756), 1235 states have call successors, (1235), 1234 states have call predecessors, (1235), 4930 states have return successors, (37489), 4152 states have call predecessors, (37489), 1234 states have call successors, (37489) [2023-04-01 20:59:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277290 states to 277290 states and 326480 transitions. [2023-04-01 20:59:36,155 INFO L78 Accepts]: Start accepts. Automaton has 277290 states and 326480 transitions. Word has length 1870 [2023-04-01 20:59:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:59:36,156 INFO L495 AbstractCegarLoop]: Abstraction has 277290 states and 326480 transitions. [2023-04-01 20:59:36,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 346.2) internal successors, (1731), 4 states have internal predecessors, (1731), 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 20:59:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 277290 states and 326480 transitions. [2023-04-01 20:59:36,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2127 [2023-04-01 20:59:36,839 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:59:36,840 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-04-01 20:59:36,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 20:59:37,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:59:37,041 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:59:37,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:59:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1379675806, now seen corresponding path program 1 times [2023-04-01 20:59:37,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:59:37,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120193777] [2023-04-01 20:59:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:59:37,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:59:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:39,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:59:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:59:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 20:59:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 20:59:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:39,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-04-01 20:59:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2023-04-01 20:59:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 441 proven. 13 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2023-04-01 20:59:39,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:59:39,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120193777] [2023-04-01 20:59:39,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120193777] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:59:39,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654725644] [2023-04-01 20:59:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:59:39,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:59:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:59:39,925 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 20:59:39,932 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 20:59:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:40,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 20:59:40,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:59:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-04-01 20:59:40,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:59:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654725644] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:59:40,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:59:40,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2023-04-01 20:59:40,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800186532] [2023-04-01 20:59:40,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:59:40,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:59:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:59:40,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:59:40,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:59:40,608 INFO L87 Difference]: Start difference. First operand 277290 states and 326480 transitions. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 20:59:47,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:59:47,740 INFO L93 Difference]: Finished difference Result 554512 states and 653303 transitions. [2023-04-01 20:59:47,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:59:47,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 2126 [2023-04-01 20:59:47,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:59:49,089 INFO L225 Difference]: With dead ends: 554512 [2023-04-01 20:59:49,089 INFO L226 Difference]: Without dead ends: 277232 [2023-04-01 20:59:49,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2145 GetRequests, 2138 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:59:49,393 INFO L413 NwaCegarLoop]: 3009 mSDtfsCounter, 2114 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 5439 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2114 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 6120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 5439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:59:49,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2114 Valid, 3316 Invalid, 6120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 5439 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 20:59:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277232 states. [2023-04-01 20:59:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277232 to 277229. [2023-04-01 20:59:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277229 states, 271083 states have (on average 1.0534448858836591) internal successors, (285571), 271857 states have internal predecessors, (285571), 1235 states have call successors, (1235), 1234 states have call predecessors, (1235), 4910 states have return successors, (34286), 4137 states have call predecessors, (34286), 1234 states have call successors, (34286) [2023-04-01 20:59:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277229 states to 277229 states and 321092 transitions. [2023-04-01 20:59:54,856 INFO L78 Accepts]: Start accepts. Automaton has 277229 states and 321092 transitions. Word has length 2126 [2023-04-01 20:59:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:59:54,857 INFO L495 AbstractCegarLoop]: Abstraction has 277229 states and 321092 transitions. [2023-04-01 20:59:54,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 20:59:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 277229 states and 321092 transitions. [2023-04-01 20:59:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2580 [2023-04-01 20:59:55,259 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:59:55,260 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:55,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 20:59:55,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:59:55,461 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:59:55,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:59:55,462 INFO L85 PathProgramCache]: Analyzing trace with hash -464868133, now seen corresponding path program 1 times [2023-04-01 20:59:55,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:59:55,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576268810] [2023-04-01 20:59:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:59:55,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:59:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:57,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:59:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:57,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:59:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:57,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 20:59:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:57,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 20:59:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-04-01 20:59:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:57,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2023-04-01 20:59:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2023-04-01 20:59:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:59:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:57,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 878 [2023-04-01 20:59:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2249 backedges. 1150 proven. 281 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked. [2023-04-01 20:59:57,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:59:57,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576268810] [2023-04-01 20:59:57,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576268810] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:59:57,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585716874] [2023-04-01 20:59:57,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:59:57,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:59:57,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:59:57,976 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 20:59:57,977 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 20:59:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:58,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 20:59:58,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:59:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2249 backedges. 905 proven. 0 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2023-04-01 20:59:59,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:59:59,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585716874] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:59:59,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:59:59,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:59:59,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895312725] [2023-04-01 20:59:59,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:59:59,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:59:59,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:59:59,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:59:59,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:59:59,581 INFO L87 Difference]: Start difference. First operand 277229 states and 321092 transitions. Second operand has 3 states, 3 states have (on average 673.6666666666666) internal successors, (2021), 2 states have internal predecessors, (2021), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 21:00:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:00:05,030 INFO L93 Difference]: Finished difference Result 554283 states and 642636 transitions. [2023-04-01 21:00:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:00:05,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 673.6666666666666) internal successors, (2021), 2 states have internal predecessors, (2021), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 2579 [2023-04-01 21:00:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted.