/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:52:44,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:52:44,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:52:44,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:52:44,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:52:44,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:52:44,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:52:44,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:52:44,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:52:44,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:52:44,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:52:44,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:52:44,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:52:44,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:52:44,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:52:44,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:52:44,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 23:52:44,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 23:52:44,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 23:52:44,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 23:52:44,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 23:52:44,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 23:52:44,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 23:52:44,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 23:52:44,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 23:52:44,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:52:44,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:52:44,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:52:44,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:52:44,418 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:52:44,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:52:44,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:52:44,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:52:44,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:52:44,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:52:44,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:52:44,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:52:44,421 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:52:44,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:52:44,422 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:52:44,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:52:44,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:52:44,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:52:44,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:52:44,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:52:44,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:52:44,423 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:52:44,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:52:44,423 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:52:44,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:52:44,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:52:44,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:52:44,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:52:44,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:52:44,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:52:44,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:52:44,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:52:44,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:52:44,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:52:44,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:52:44,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:52:44,426 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:52:44,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:52:44,426 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:52:44,426 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:52:44,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:52:44,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:52:44,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:52:44,690 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:52:44,691 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:52:44,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label14.c [2023-04-01 23:52:45,819 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:52:46,313 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:52:46,313 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label14.c [2023-04-01 23:52:46,358 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfff965a6/e43015e6881f49a4bb17a2ee736db301/FLAGff4e0b114 [2023-04-01 23:52:46,374 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfff965a6/e43015e6881f49a4bb17a2ee736db301 [2023-04-01 23:52:46,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:52:46,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:52:46,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:52:46,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:52:46,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:52:46,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:52:46" (1/1) ... [2023-04-01 23:52:46,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d73f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:46, skipping insertion in model container [2023-04-01 23:52:46,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:52:46" (1/1) ... [2023-04-01 23:52:46,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:52:46,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:52:46,912 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label14.c[2035,2048] [2023-04-01 23:52:48,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:52:48,072 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:52:48,091 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label14.c[2035,2048] [2023-04-01 23:52:48,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:52:48,808 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:52:48,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48 WrapperNode [2023-04-01 23:52:48,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:52:48,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:52:48,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:52:48,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:52:48,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48" (1/1) ... [2023-04-01 23:52:48,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48" (1/1) ... [2023-04-01 23:52:48,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48" (1/1) ... [2023-04-01 23:52:48,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48" (1/1) ... [2023-04-01 23:52:49,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48" (1/1) ... [2023-04-01 23:52:49,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48" (1/1) ... [2023-04-01 23:52:49,221 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48" (1/1) ... [2023-04-01 23:52:49,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48" (1/1) ... [2023-04-01 23:52:49,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:52:49,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:52:49,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:52:49,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:52:49,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48" (1/1) ... [2023-04-01 23:52:49,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:52:49,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:52:49,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:52:49,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:52:49,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:52:49,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:52:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:52:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:52:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:52:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:52:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 23:52:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 23:52:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 23:52:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:52:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:52:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:52:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:52:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 23:52:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 23:52:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 23:52:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:52:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:52:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:52:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:52:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:52:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:52:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:52:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:52:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:52:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:52:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:52:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:52:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:52:49,515 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:52:49,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:52:56,574 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:52:56,594 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:52:56,595 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:52:56,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:52:56 BoogieIcfgContainer [2023-04-01 23:52:56,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:52:56,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:52:56,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:52:56,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:52:56,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:52:46" (1/3) ... [2023-04-01 23:52:56,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b68a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:52:56, skipping insertion in model container [2023-04-01 23:52:56,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:52:48" (2/3) ... [2023-04-01 23:52:56,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b68a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:52:56, skipping insertion in model container [2023-04-01 23:52:56,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:52:56" (3/3) ... [2023-04-01 23:52:56,606 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label14.c [2023-04-01 23:52:56,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:52:56,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:52:56,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:52:56,698 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;@39e485bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:52:56,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:52:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-01 23:52:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-01 23:52:56,716 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:52:56,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:52:56,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:52:56,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:52:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1528719100, now seen corresponding path program 1 times [2023-04-01 23:52:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:52:56,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150963514] [2023-04-01 23:52:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:52:56,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:52:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:57,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:52:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:52:57,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:52:57,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150963514] [2023-04-01 23:52:57,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150963514] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:52:57,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:52:57,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 23:52:57,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995151898] [2023-04-01 23:52:57,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:52:57,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:52:57,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:52:57,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:52:57,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:52:57,160 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:53:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:53:10,556 INFO L93 Difference]: Finished difference Result 6480 states and 12299 transitions. [2023-04-01 23:53:10,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:53:10,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-04-01 23:53:10,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:53:10,603 INFO L225 Difference]: With dead ends: 6480 [2023-04-01 23:53:10,603 INFO L226 Difference]: Without dead ends: 4635 [2023-04-01 23:53:10,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:53:10,623 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 7803 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 9808 mSolverCounterSat, 2328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7803 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 12136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2328 IncrementalHoareTripleChecker+Valid, 9808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:53:10,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7803 Valid, 493 Invalid, 12136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2328 Valid, 9808 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-04-01 23:53:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2023-04-01 23:53:10,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4629. [2023-04-01 23:53:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4571 states have (on average 1.6740319404944213) internal successors, (7652), 4574 states have internal predecessors, (7652), 20 states have call successors, (20), 20 states have call predecessors, (20), 37 states have return successors, (77), 34 states have call predecessors, (77), 19 states have call successors, (77) [2023-04-01 23:53:10,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7749 transitions. [2023-04-01 23:53:10,871 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7749 transitions. Word has length 18 [2023-04-01 23:53:10,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:53:10,872 INFO L495 AbstractCegarLoop]: Abstraction has 4629 states and 7749 transitions. [2023-04-01 23:53:10,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:53:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7749 transitions. [2023-04-01 23:53:10,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 23:53:10,879 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:53:10,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:53:10,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:53:10,880 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:53:10,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:53:10,881 INFO L85 PathProgramCache]: Analyzing trace with hash 224668373, now seen corresponding path program 1 times [2023-04-01 23:53:10,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:53:10,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925447958] [2023-04-01 23:53:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:53:10,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:53:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:11,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:53:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:11,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:53:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:53:11,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:53:11,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925447958] [2023-04-01 23:53:11,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925447958] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:53:11,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:53:11,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:53:11,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245816061] [2023-04-01 23:53:11,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:53:11,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:53:11,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:53:11,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:53:11,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:53:11,327 INFO L87 Difference]: Start difference. First operand 4629 states and 7749 transitions. Second operand has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:53:22,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:53:22,189 INFO L93 Difference]: Finished difference Result 10809 states and 17786 transitions. [2023-04-01 23:53:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:53:22,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 96 [2023-04-01 23:53:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:53:22,231 INFO L225 Difference]: With dead ends: 10809 [2023-04-01 23:53:22,231 INFO L226 Difference]: Without dead ends: 6186 [2023-04-01 23:53:22,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:53:22,246 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 5313 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 11948 mSolverCounterSat, 1993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5313 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 13941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1993 IncrementalHoareTripleChecker+Valid, 11948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:53:22,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5313 Valid, 818 Invalid, 13941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1993 Valid, 11948 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-04-01 23:53:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2023-04-01 23:53:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 6137. [2023-04-01 23:53:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6137 states, 6029 states have (on average 1.4795156742411677) internal successors, (8920), 6039 states have internal predecessors, (8920), 26 states have call successors, (26), 26 states have call predecessors, (26), 81 states have return successors, (175), 71 states have call predecessors, (175), 25 states have call successors, (175) [2023-04-01 23:53:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 9121 transitions. [2023-04-01 23:53:22,413 INFO L78 Accepts]: Start accepts. Automaton has 6137 states and 9121 transitions. Word has length 96 [2023-04-01 23:53:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:53:22,413 INFO L495 AbstractCegarLoop]: Abstraction has 6137 states and 9121 transitions. [2023-04-01 23:53:22,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:53:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 6137 states and 9121 transitions. [2023-04-01 23:53:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 23:53:22,420 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:53:22,421 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:53:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:53:22,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:53:22,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:53:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 6635939, now seen corresponding path program 1 times [2023-04-01 23:53:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:53:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991441955] [2023-04-01 23:53:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:53:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:53:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:22,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:53:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:22,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:53:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:53:22,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:53:22,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991441955] [2023-04-01 23:53:22,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991441955] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:53:22,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:53:22,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:53:22,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643064222] [2023-04-01 23:53:22,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:53:22,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:53:22,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:53:22,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:53:22,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:53:22,814 INFO L87 Difference]: Start difference. First operand 6137 states and 9121 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:53:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:53:33,433 INFO L93 Difference]: Finished difference Result 18713 states and 28143 transitions. [2023-04-01 23:53:33,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:53:33,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 99 [2023-04-01 23:53:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:53:33,484 INFO L225 Difference]: With dead ends: 18713 [2023-04-01 23:53:33,485 INFO L226 Difference]: Without dead ends: 12582 [2023-04-01 23:53:33,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:53:33,503 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 14123 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 9844 mSolverCounterSat, 829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14123 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 10673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 9844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:53:33,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14123 Valid, 783 Invalid, 10673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 9844 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-04-01 23:53:33,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12582 states. [2023-04-01 23:53:33,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12582 to 12184. [2023-04-01 23:53:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12184 states, 11913 states have (on average 1.428859229413246) internal successors, (17022), 11946 states have internal predecessors, (17022), 50 states have call successors, (50), 50 states have call predecessors, (50), 220 states have return successors, (561), 187 states have call predecessors, (561), 49 states have call successors, (561) [2023-04-01 23:53:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12184 states to 12184 states and 17633 transitions. [2023-04-01 23:53:33,892 INFO L78 Accepts]: Start accepts. Automaton has 12184 states and 17633 transitions. Word has length 99 [2023-04-01 23:53:33,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:53:33,892 INFO L495 AbstractCegarLoop]: Abstraction has 12184 states and 17633 transitions. [2023-04-01 23:53:33,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:53:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 12184 states and 17633 transitions. [2023-04-01 23:53:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-04-01 23:53:33,898 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:53:33,898 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:53:33,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:53:33,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:53:33,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:53:33,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1420786701, now seen corresponding path program 1 times [2023-04-01 23:53:33,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:53:33,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357961988] [2023-04-01 23:53:33,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:53:33,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:53:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:34,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:53:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:34,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:53:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:53:34,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:53:34,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357961988] [2023-04-01 23:53:34,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357961988] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:53:34,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:53:34,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:53:34,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146911119] [2023-04-01 23:53:34,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:53:34,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:53:34,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:53:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:53:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:53:34,328 INFO L87 Difference]: Start difference. First operand 12184 states and 17633 transitions. Second operand has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:53:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:53:46,618 INFO L93 Difference]: Finished difference Result 37596 states and 55301 transitions. [2023-04-01 23:53:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:53:46,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 119 [2023-04-01 23:53:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:53:46,701 INFO L225 Difference]: With dead ends: 37596 [2023-04-01 23:53:46,701 INFO L226 Difference]: Without dead ends: 25418 [2023-04-01 23:53:46,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:53:46,733 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 5859 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 11344 mSolverCounterSat, 2113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5859 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 13457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2113 IncrementalHoareTripleChecker+Valid, 11344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:53:46,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5859 Valid, 956 Invalid, 13457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2113 Valid, 11344 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-04-01 23:53:46,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25418 states. [2023-04-01 23:53:47,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25418 to 23097. [2023-04-01 23:53:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23097 states, 22383 states have (on average 1.280302014922039) internal successors, (28657), 22485 states have internal predecessors, (28657), 92 states have call successors, (92), 92 states have call predecessors, (92), 621 states have return successors, (1845), 519 states have call predecessors, (1845), 91 states have call successors, (1845) [2023-04-01 23:53:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23097 states to 23097 states and 30594 transitions. [2023-04-01 23:53:47,373 INFO L78 Accepts]: Start accepts. Automaton has 23097 states and 30594 transitions. Word has length 119 [2023-04-01 23:53:47,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:53:47,374 INFO L495 AbstractCegarLoop]: Abstraction has 23097 states and 30594 transitions. [2023-04-01 23:53:47,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:53:47,374 INFO L276 IsEmpty]: Start isEmpty. Operand 23097 states and 30594 transitions. [2023-04-01 23:53:47,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-01 23:53:47,377 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:53:47,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:53:47,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 23:53:47,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:53:47,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:53:47,378 INFO L85 PathProgramCache]: Analyzing trace with hash -264681365, now seen corresponding path program 1 times [2023-04-01 23:53:47,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:53:47,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078822645] [2023-04-01 23:53:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:53:47,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:53:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:53:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:53:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:53:47,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:53:47,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078822645] [2023-04-01 23:53:47,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078822645] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:53:47,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:53:47,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:53:47,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010405484] [2023-04-01 23:53:47,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:53:47,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:53:47,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:53:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:53:47,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:53:47,712 INFO L87 Difference]: Start difference. First operand 23097 states and 30594 transitions. Second operand has 7 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:54:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:54:00,500 INFO L93 Difference]: Finished difference Result 71609 states and 98293 transitions. [2023-04-01 23:54:00,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:54:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 126 [2023-04-01 23:54:00,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:54:00,652 INFO L225 Difference]: With dead ends: 71609 [2023-04-01 23:54:00,652 INFO L226 Difference]: Without dead ends: 48518 [2023-04-01 23:54:00,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:54:00,708 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 8120 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 11711 mSolverCounterSat, 2090 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8120 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 13801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2090 IncrementalHoareTripleChecker+Valid, 11711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:54:00,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8120 Valid, 1047 Invalid, 13801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2090 Valid, 11711 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-04-01 23:54:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48518 states. [2023-04-01 23:54:01,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48518 to 45399. [2023-04-01 23:54:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45399 states, 43518 states have (on average 1.1893469368996736) internal successors, (51758), 43847 states have internal predecessors, (51758), 176 states have call successors, (176), 176 states have call predecessors, (176), 1704 states have return successors, (6069), 1375 states have call predecessors, (6069), 175 states have call successors, (6069) [2023-04-01 23:54:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45399 states to 45399 states and 58003 transitions. [2023-04-01 23:54:01,811 INFO L78 Accepts]: Start accepts. Automaton has 45399 states and 58003 transitions. Word has length 126 [2023-04-01 23:54:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:54:01,811 INFO L495 AbstractCegarLoop]: Abstraction has 45399 states and 58003 transitions. [2023-04-01 23:54:01,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:54:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 45399 states and 58003 transitions. [2023-04-01 23:54:01,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2023-04-01 23:54:01,824 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:54:01,825 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:54:01,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 23:54:01,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:54:01,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:54:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2144518720, now seen corresponding path program 1 times [2023-04-01 23:54:01,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:54:01,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795605061] [2023-04-01 23:54:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:54:01,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:54:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:02,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:54:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:54:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:54:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:54:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2023-04-01 23:54:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:54:03,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:54:03,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795605061] [2023-04-01 23:54:03,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795605061] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:54:03,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395204503] [2023-04-01 23:54:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:54:03,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:54:03,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:54:03,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:54:03,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:54:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:03,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:54:03,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:54:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:54:03,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:54:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:54:04,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395204503] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:54:04,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:54:04,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:54:04,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149842962] [2023-04-01 23:54:04,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:54:04,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:54:04,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:54:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:54:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:54:04,154 INFO L87 Difference]: Start difference. First operand 45399 states and 58003 transitions. Second operand has 11 states, 11 states have (on average 76.0) internal successors, (836), 9 states have internal predecessors, (836), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 23:54:23,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:54:23,713 INFO L93 Difference]: Finished difference Result 173882 states and 245278 transitions. [2023-04-01 23:54:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 23:54:23,715 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 76.0) internal successors, (836), 9 states have internal predecessors, (836), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 689 [2023-04-01 23:54:23,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:54:24,571 INFO L225 Difference]: With dead ends: 173882 [2023-04-01 23:54:24,572 INFO L226 Difference]: Without dead ends: 128489 [2023-04-01 23:54:24,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1414 GetRequests, 1388 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:54:24,735 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 8116 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 19019 mSolverCounterSat, 4634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8116 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 23653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4634 IncrementalHoareTripleChecker+Valid, 19019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:54:24,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8116 Valid, 1586 Invalid, 23653 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4634 Valid, 19019 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2023-04-01 23:54:24,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128489 states. [2023-04-01 23:54:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128489 to 124890. [2023-04-01 23:54:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124890 states, 119782 states have (on average 1.1370489722996777) internal successors, (136198), 120784 states have internal predecessors, (136198), 488 states have call successors, (488), 488 states have call predecessors, (488), 4619 states have return successors, (24094), 3617 states have call predecessors, (24094), 487 states have call successors, (24094) [2023-04-01 23:54:28,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124890 states to 124890 states and 160780 transitions. [2023-04-01 23:54:28,191 INFO L78 Accepts]: Start accepts. Automaton has 124890 states and 160780 transitions. Word has length 689 [2023-04-01 23:54:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:54:28,193 INFO L495 AbstractCegarLoop]: Abstraction has 124890 states and 160780 transitions. [2023-04-01 23:54:28,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 76.0) internal successors, (836), 9 states have internal predecessors, (836), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 23:54:28,193 INFO L276 IsEmpty]: Start isEmpty. Operand 124890 states and 160780 transitions. [2023-04-01 23:54:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-04-01 23:54:28,210 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:54:28,211 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:54:28,220 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 23:54:28,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 23:54:28,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:54:28,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:54:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash 252879160, now seen corresponding path program 1 times [2023-04-01 23:54:28,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:54:28,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278290419] [2023-04-01 23:54:28,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:54:28,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:54:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:30,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:54:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:54:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:30,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:54:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:54:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:54:31,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:54:31,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278290419] [2023-04-01 23:54:31,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278290419] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:54:31,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804022594] [2023-04-01 23:54:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:54:31,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:54:31,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:54:31,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:54:31,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:54:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:54:31,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:54:31,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:54:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:54:32,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:54:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:54:36,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804022594] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:54:36,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:54:36,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 23:54:36,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477104452] [2023-04-01 23:54:36,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:54:36,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:54:36,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:54:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:54:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:54:36,699 INFO L87 Difference]: Start difference. First operand 124890 states and 160780 transitions. Second operand has 13 states, 13 states have (on average 87.84615384615384) internal successors, (1142), 11 states have internal predecessors, (1142), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 23:55:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:55:02,680 INFO L93 Difference]: Finished difference Result 292922 states and 392316 transitions. [2023-04-01 23:55:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-04-01 23:55:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 87.84615384615384) internal successors, (1142), 11 states have internal predecessors, (1142), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 724 [2023-04-01 23:55:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:55:03,460 INFO L225 Difference]: With dead ends: 292922 [2023-04-01 23:55:03,460 INFO L226 Difference]: Without dead ends: 166643 [2023-04-01 23:55:03,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1517 GetRequests, 1462 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=645, Invalid=2435, Unknown=0, NotChecked=0, Total=3080 [2023-04-01 23:55:03,575 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 17326 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 22215 mSolverCounterSat, 9325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17328 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 31540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9325 IncrementalHoareTripleChecker+Valid, 22215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:55:03,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17328 Valid, 1788 Invalid, 31540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9325 Valid, 22215 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time] [2023-04-01 23:55:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166643 states. [2023-04-01 23:55:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166643 to 163396. [2023-04-01 23:55:06,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163396 states, 157105 states have (on average 1.1334585150058878) internal successors, (178072), 158368 states have internal predecessors, (178072), 644 states have call successors, (644), 644 states have call predecessors, (644), 5646 states have return successors, (36109), 4383 states have call predecessors, (36109), 643 states have call successors, (36109) [2023-04-01 23:55:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163396 states to 163396 states and 214825 transitions. [2023-04-01 23:55:07,258 INFO L78 Accepts]: Start accepts. Automaton has 163396 states and 214825 transitions. Word has length 724 [2023-04-01 23:55:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:55:07,258 INFO L495 AbstractCegarLoop]: Abstraction has 163396 states and 214825 transitions. [2023-04-01 23:55:07,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.84615384615384) internal successors, (1142), 11 states have internal predecessors, (1142), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 23:55:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 163396 states and 214825 transitions. [2023-04-01 23:55:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2023-04-01 23:55:07,276 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:55:07,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:55:07,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:55:07,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-04-01 23:55:07,485 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:55:07,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:55:07,485 INFO L85 PathProgramCache]: Analyzing trace with hash -433430964, now seen corresponding path program 1 times [2023-04-01 23:55:07,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:55:07,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319134137] [2023-04-01 23:55:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:55:07,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:55:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:08,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:55:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:08,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:55:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:55:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:55:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-01 23:55:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-04-01 23:55:08,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:55:08,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319134137] [2023-04-01 23:55:08,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319134137] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:55:08,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396091411] [2023-04-01 23:55:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:55:08,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:55:08,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:55:08,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:55:08,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:55:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:08,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:55:08,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:55:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 178 proven. 10 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-04-01 23:55:09,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:55:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-04-01 23:55:09,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396091411] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:55:09,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:55:09,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-04-01 23:55:09,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004995084] [2023-04-01 23:55:09,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:55:09,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 23:55:09,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:55:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 23:55:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:55:09,455 INFO L87 Difference]: Start difference. First operand 163396 states and 214825 transitions. Second operand has 10 states, 10 states have (on average 69.0) internal successors, (690), 8 states have internal predecessors, (690), 4 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 23:55:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:55:37,384 INFO L93 Difference]: Finished difference Result 621849 states and 888034 transitions. [2023-04-01 23:55:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 23:55:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 69.0) internal successors, (690), 8 states have internal predecessors, (690), 4 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 807 [2023-04-01 23:55:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:55:39,146 INFO L225 Difference]: With dead ends: 621849 [2023-04-01 23:55:39,146 INFO L226 Difference]: Without dead ends: 455677 [2023-04-01 23:55:39,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1644 GetRequests, 1626 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2023-04-01 23:55:39,464 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 19425 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 16838 mSolverCounterSat, 8042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19425 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 24880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8042 IncrementalHoareTripleChecker+Valid, 16838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:55:39,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19425 Valid, 883 Invalid, 24880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8042 Valid, 16838 Invalid, 0 Unknown, 0 Unchecked, 22.9s Time] [2023-04-01 23:55:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455677 states. [2023-04-01 23:55:48,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455677 to 440696. [2023-04-01 23:55:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440696 states, 428802 states have (on average 1.125302587208082) internal successors, (482532), 430943 states have internal predecessors, (482532), 1802 states have call successors, (1802), 1802 states have call predecessors, (1802), 10091 states have return successors, (113207), 7950 states have call predecessors, (113207), 1801 states have call successors, (113207) [2023-04-01 23:55:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440696 states to 440696 states and 597541 transitions. [2023-04-01 23:55:50,534 INFO L78 Accepts]: Start accepts. Automaton has 440696 states and 597541 transitions. Word has length 807 [2023-04-01 23:55:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:55:50,536 INFO L495 AbstractCegarLoop]: Abstraction has 440696 states and 597541 transitions. [2023-04-01 23:55:50,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.0) internal successors, (690), 8 states have internal predecessors, (690), 4 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 23:55:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 440696 states and 597541 transitions. [2023-04-01 23:55:50,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2023-04-01 23:55:50,833 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:55:50,834 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:55:50,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:55:51,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:55:51,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:55:51,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:55:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1513716174, now seen corresponding path program 1 times [2023-04-01 23:55:51,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:55:51,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451960111] [2023-04-01 23:55:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:55:51,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:55:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:52,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:55:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:52,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:55:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:55:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:52,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:55:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:55:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:52,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 873 [2023-04-01 23:55:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-04-01 23:55:52,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:55:52,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451960111] [2023-04-01 23:55:52,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451960111] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:55:52,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709108497] [2023-04-01 23:55:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:55:52,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:55:52,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:55:52,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:55:52,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:55:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:55:53,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:55:53,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:55:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-04-01 23:55:53,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:55:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-04-01 23:55:53,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709108497] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:55:53,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:55:53,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-04-01 23:55:53,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751506071] [2023-04-01 23:55:53,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:55:53,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:55:53,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:55:53,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:55:53,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:55:53,757 INFO L87 Difference]: Start difference. First operand 440696 states and 597541 transitions. Second operand has 12 states, 12 states have (on average 73.58333333333333) internal successors, (883), 10 states have internal predecessors, (883), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12)