/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/Problem04_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:47:38,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:47:38,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:47:38,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:47:38,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:47:38,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:47:38,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:47:38,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 20:47:38,565 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:47:38,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:47:38,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:47:38,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:47:38,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:47:38,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:47:38,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:47:38,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:47:38,567 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:47:38,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:47:38,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:47:38,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:47:38,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:47:38,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:47:38,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:47:38,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:47:38,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:47:38,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:47:38,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:47:38,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:47:38,569 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:47:38,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:47:38,570 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:47:38,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:47:38,570 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:47:38,570 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:47:38,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:47:38,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:47:38,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:47:38,744 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:47:38,744 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:47:38,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label52.c [2023-04-01 20:47:39,755 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:47:40,075 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:47:40,075 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label52.c [2023-04-01 20:47:40,096 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aa509072/f9efab41a558404bae4f308e62a44935/FLAG0fca1b41b [2023-04-01 20:47:40,106 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aa509072/f9efab41a558404bae4f308e62a44935 [2023-04-01 20:47:40,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:47:40,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:47:40,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:47:40,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:47:40,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:47:40,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:47:40" (1/1) ... [2023-04-01 20:47:40,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a50d460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:40, skipping insertion in model container [2023-04-01 20:47:40,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:47:40" (1/1) ... [2023-04-01 20:47:40,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:47:40,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:47:40,991 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/Problem04_label52.c[176915,176928] [2023-04-01 20:47:41,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:47:41,018 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:47:41,332 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/Problem04_label52.c[176915,176928] [2023-04-01 20:47:41,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:47:41,356 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:47:41,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41 WrapperNode [2023-04-01 20:47:41,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:47:41,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:47:41,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:47:41,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:47:41,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41" (1/1) ... [2023-04-01 20:47:41,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41" (1/1) ... [2023-04-01 20:47:41,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41" (1/1) ... [2023-04-01 20:47:41,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41" (1/1) ... [2023-04-01 20:47:41,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41" (1/1) ... [2023-04-01 20:47:41,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41" (1/1) ... [2023-04-01 20:47:41,511 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41" (1/1) ... [2023-04-01 20:47:41,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41" (1/1) ... [2023-04-01 20:47:41,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:47:41,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:47:41,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:47:41,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:47:41,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41" (1/1) ... [2023-04-01 20:47:41,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:47:41,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:47:41,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 20:47:41,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 20:47:41,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:47:41,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:47:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:47:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:47:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:47:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:47:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:47:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:47:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:47:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:47:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:47:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:47:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:47:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:47:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:47:41,694 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:47:41,696 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:47:44,402 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:47:44,415 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:47:44,415 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:47:44,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:47:44 BoogieIcfgContainer [2023-04-01 20:47:44,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:47:44,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:47:44,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:47:44,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:47:44,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:47:40" (1/3) ... [2023-04-01 20:47:44,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc2a1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:47:44, skipping insertion in model container [2023-04-01 20:47:44,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:41" (2/3) ... [2023-04-01 20:47:44,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc2a1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:47:44, skipping insertion in model container [2023-04-01 20:47:44,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:47:44" (3/3) ... [2023-04-01 20:47:44,422 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label52.c [2023-04-01 20:47:44,434 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:47:44,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:47:44,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:47:44,490 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;@7f2ce68c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:47:44,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:47:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 20:47:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-04-01 20:47:44,561 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:44,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:47:44,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:44,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1359426816, now seen corresponding path program 1 times [2023-04-01 20:47:44,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:44,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307820581] [2023-04-01 20:47:44,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:44,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:47:47,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307820581] [2023-04-01 20:47:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307820581] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:47:47,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:47:47,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:47:47,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448811253] [2023-04-01 20:47:47,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:47:47,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:47:47,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:47:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:47:47,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:47:47,226 INFO L87 Difference]: Start difference. First operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 191.25) internal successors, (765), 3 states have internal predecessors, (765), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:47:51,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:51,918 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2023-04-01 20:47:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 20:47:51,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 191.25) internal successors, (765), 3 states have internal predecessors, (765), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 772 [2023-04-01 20:47:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:47:51,941 INFO L225 Difference]: With dead ends: 2672 [2023-04-01 20:47:51,941 INFO L226 Difference]: Without dead ends: 1702 [2023-04-01 20:47:51,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:47:51,951 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2724 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 4262 mSolverCounterSat, 1384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2724 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1384 IncrementalHoareTripleChecker+Valid, 4262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:51,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2724 Valid, 52 Invalid, 5646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1384 Valid, 4262 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 20:47:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-04-01 20:47:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2023-04-01 20:47:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1663 states have (on average 1.8592904389657245) internal successors, (3092), 1664 states have internal predecessors, (3092), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 20:47:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3123 transitions. [2023-04-01 20:47:52,078 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3123 transitions. Word has length 772 [2023-04-01 20:47:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:52,081 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 3123 transitions. [2023-04-01 20:47:52,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 191.25) internal successors, (765), 3 states have internal predecessors, (765), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:47:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3123 transitions. [2023-04-01 20:47:52,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-04-01 20:47:52,101 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:52,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:47:52,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:47:52,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:52,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:52,103 INFO L85 PathProgramCache]: Analyzing trace with hash -452211872, now seen corresponding path program 1 times [2023-04-01 20:47:52,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:52,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100391292] [2023-04-01 20:47:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:52,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:47:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:47:53,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:53,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100391292] [2023-04-01 20:47:53,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100391292] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:47:53,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:47:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:47:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737646341] [2023-04-01 20:47:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:47:53,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:47:53,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:47:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:47:53,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:47:53,305 INFO L87 Difference]: Start difference. First operand 1687 states and 3123 transitions. Second operand has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 5 states have internal predecessors, (772), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:47:58,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:58,285 INFO L93 Difference]: Finished difference Result 5149 states and 9583 transitions. [2023-04-01 20:47:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:47:58,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 5 states have internal predecessors, (772), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 781 [2023-04-01 20:47:58,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:47:58,323 INFO L225 Difference]: With dead ends: 5149 [2023-04-01 20:47:58,323 INFO L226 Difference]: Without dead ends: 3468 [2023-04-01 20:47:58,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:47:58,328 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 5733 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5459 mSolverCounterSat, 2430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5733 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 7889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2430 IncrementalHoareTripleChecker+Valid, 5459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:58,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5733 Valid, 105 Invalid, 7889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2430 Valid, 5459 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-01 20:47:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2023-04-01 20:47:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3417. [2023-04-01 20:47:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3354 states have (on average 1.7498509242695288) internal successors, (5869), 3362 states have internal predecessors, (5869), 18 states have call successors, (18), 18 states have call predecessors, (18), 44 states have return successors, (107), 36 states have call predecessors, (107), 17 states have call successors, (107) [2023-04-01 20:47:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 5994 transitions. [2023-04-01 20:47:58,451 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 5994 transitions. Word has length 781 [2023-04-01 20:47:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:58,452 INFO L495 AbstractCegarLoop]: Abstraction has 3417 states and 5994 transitions. [2023-04-01 20:47:58,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 5 states have internal predecessors, (772), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:47:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 5994 transitions. [2023-04-01 20:47:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2023-04-01 20:47:58,471 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:58,472 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:47:58,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:47:58,472 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:58,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:58,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1572538708, now seen corresponding path program 1 times [2023-04-01 20:47:58,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:58,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738844394] [2023-04-01 20:47:58,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:58,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:59,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:47:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:59,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:47:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 20:47:59,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738844394] [2023-04-01 20:47:59,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738844394] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:47:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454310297] [2023-04-01 20:47:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:59,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:59,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:47:59,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:47:59,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 20:47:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:59,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:47:59,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:47:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:47:59,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:48:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:48:00,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454310297] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:48:00,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:48:00,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:48:00,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658130072] [2023-04-01 20:48:00,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:48:00,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:48:00,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:00,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:48:00,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:48:00,051 INFO L87 Difference]: Start difference. First operand 3417 states and 5994 transitions. Second operand has 11 states, 11 states have (on average 73.18181818181819) internal successors, (805), 9 states have internal predecessors, (805), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 20:48:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:08,690 INFO L93 Difference]: Finished difference Result 17586 states and 32430 transitions. [2023-04-01 20:48:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-01 20:48:08,691 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 73.18181818181819) internal successors, (805), 9 states have internal predecessors, (805), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 800 [2023-04-01 20:48:08,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:08,740 INFO L225 Difference]: With dead ends: 17586 [2023-04-01 20:48:08,741 INFO L226 Difference]: Without dead ends: 14175 [2023-04-01 20:48:08,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1647 GetRequests, 1609 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 20:48:08,750 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 8755 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 8202 mSolverCounterSat, 5357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8755 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 13559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5357 IncrementalHoareTripleChecker+Valid, 8202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:08,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8755 Valid, 322 Invalid, 13559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5357 Valid, 8202 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-04-01 20:48:08,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14175 states. [2023-04-01 20:48:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14175 to 13995. [2023-04-01 20:48:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13995 states, 13621 states have (on average 1.351662873504148) internal successors, (18411), 13704 states have internal predecessors, (18411), 66 states have call successors, (66), 66 states have call predecessors, (66), 307 states have return successors, (1607), 224 states have call predecessors, (1607), 65 states have call successors, (1607) [2023-04-01 20:48:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13995 states to 13995 states and 20084 transitions. [2023-04-01 20:48:09,044 INFO L78 Accepts]: Start accepts. Automaton has 13995 states and 20084 transitions. Word has length 800 [2023-04-01 20:48:09,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:09,045 INFO L495 AbstractCegarLoop]: Abstraction has 13995 states and 20084 transitions. [2023-04-01 20:48:09,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 73.18181818181819) internal successors, (805), 9 states have internal predecessors, (805), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 20:48:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13995 states and 20084 transitions. [2023-04-01 20:48:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2023-04-01 20:48:09,076 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:09,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:48:09,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 20:48:09,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:09,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:09,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1921030824, now seen corresponding path program 1 times [2023-04-01 20:48:09,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:09,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116858189] [2023-04-01 20:48:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:09,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:10,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:10,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-01 20:48:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-01 20:48:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 146 proven. 83 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-04-01 20:48:10,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:10,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116858189] [2023-04-01 20:48:10,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116858189] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:48:10,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264172768] [2023-04-01 20:48:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:10,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:10,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:48:10,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:48:10,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 20:48:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:10,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:48:10,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:48:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-01 20:48:10,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:48:10,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264172768] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:48:10,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:48:10,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 20:48:10,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739988556] [2023-04-01 20:48:10,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:48:10,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:48:10,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:10,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:48:10,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:48:10,711 INFO L87 Difference]: Start difference. First operand 13995 states and 20084 transitions. Second operand has 5 states, 5 states have (on average 163.2) internal successors, (816), 4 states have internal predecessors, (816), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:48:13,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:13,873 INFO L93 Difference]: Finished difference Result 40853 states and 60908 transitions. [2023-04-01 20:48:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:48:13,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 163.2) internal successors, (816), 4 states have internal predecessors, (816), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 927 [2023-04-01 20:48:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:13,962 INFO L225 Difference]: With dead ends: 40853 [2023-04-01 20:48:13,962 INFO L226 Difference]: Without dead ends: 26864 [2023-04-01 20:48:13,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 930 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:48:14,000 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3119 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 3818 mSolverCounterSat, 2141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3119 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 5959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2141 IncrementalHoareTripleChecker+Valid, 3818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:14,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3119 Valid, 104 Invalid, 5959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2141 Valid, 3818 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 20:48:14,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26864 states. [2023-04-01 20:48:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26864 to 25095. [2023-04-01 20:48:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25095 states, 24518 states have (on average 1.2857492454523207) internal successors, (31524), 24640 states have internal predecessors, (31524), 118 states have call successors, (118), 118 states have call predecessors, (118), 458 states have return successors, (3259), 336 states have call predecessors, (3259), 117 states have call successors, (3259) [2023-04-01 20:48:14,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25095 states to 25095 states and 34901 transitions. [2023-04-01 20:48:14,713 INFO L78 Accepts]: Start accepts. Automaton has 25095 states and 34901 transitions. Word has length 927 [2023-04-01 20:48:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:14,713 INFO L495 AbstractCegarLoop]: Abstraction has 25095 states and 34901 transitions. [2023-04-01 20:48:14,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.2) internal successors, (816), 4 states have internal predecessors, (816), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:48:14,714 INFO L276 IsEmpty]: Start isEmpty. Operand 25095 states and 34901 transitions. [2023-04-01 20:48:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2023-04-01 20:48:14,767 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:14,767 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:48:14,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 20:48:14,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 20:48:14,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:14,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:14,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2040431736, now seen corresponding path program 1 times [2023-04-01 20:48:14,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:14,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921872794] [2023-04-01 20:48:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:14,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:48:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 20:48:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:15,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-01 20:48:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:16,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-04-01 20:48:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 329 proven. 148 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-04-01 20:48:16,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921872794] [2023-04-01 20:48:16,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921872794] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:48:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821372495] [2023-04-01 20:48:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:16,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:16,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:48:16,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:48:16,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 20:48:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:16,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:48:16,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:48:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 485 proven. 2 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-04-01 20:48:16,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:48:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 485 proven. 2 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-04-01 20:48:17,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821372495] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:48:17,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:48:17,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:48:17,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74684668] [2023-04-01 20:48:17,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:48:17,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:48:17,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:17,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:48:17,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:48:17,065 INFO L87 Difference]: Start difference. First operand 25095 states and 34901 transitions. Second operand has 12 states, 12 states have (on average 106.33333333333333) internal successors, (1276), 10 states have internal predecessors, (1276), 4 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 20:48:28,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:28,987 INFO L93 Difference]: Finished difference Result 106352 states and 150490 transitions. [2023-04-01 20:48:28,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-01 20:48:28,996 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 106.33333333333333) internal successors, (1276), 10 states have internal predecessors, (1276), 4 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 1091 [2023-04-01 20:48:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:29,180 INFO L225 Difference]: With dead ends: 106352 [2023-04-01 20:48:29,180 INFO L226 Difference]: Without dead ends: 76540 [2023-04-01 20:48:29,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2254 GetRequests, 2215 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=306, Invalid=1254, Unknown=0, NotChecked=0, Total=1560 [2023-04-01 20:48:29,231 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 12626 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 15864 mSolverCounterSat, 6132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12642 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 21996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6132 IncrementalHoareTripleChecker+Valid, 15864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:29,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12642 Valid, 350 Invalid, 21996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6132 Valid, 15864 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-04-01 20:48:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76540 states. [2023-04-01 20:48:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76540 to 73886. [2023-04-01 20:48:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73886 states, 72676 states have (on average 1.0622076063624855) internal successors, (77197), 72887 states have internal predecessors, (77197), 351 states have call successors, (351), 350 states have call predecessors, (351), 858 states have return successors, (8200), 648 states have call predecessors, (8200), 350 states have call successors, (8200) [2023-04-01 20:48:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73886 states to 73886 states and 85748 transitions. [2023-04-01 20:48:30,581 INFO L78 Accepts]: Start accepts. Automaton has 73886 states and 85748 transitions. Word has length 1091 [2023-04-01 20:48:30,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:30,581 INFO L495 AbstractCegarLoop]: Abstraction has 73886 states and 85748 transitions. [2023-04-01 20:48:30,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.33333333333333) internal successors, (1276), 10 states have internal predecessors, (1276), 4 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 20:48:30,582 INFO L276 IsEmpty]: Start isEmpty. Operand 73886 states and 85748 transitions. [2023-04-01 20:48:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1257 [2023-04-01 20:48:30,686 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:30,686 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:48:30,705 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 20:48:30,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:30,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:30,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1069659038, now seen corresponding path program 1 times [2023-04-01 20:48:30,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:30,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033404803] [2023-04-01 20:48:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:30,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:33,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:33,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:48:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-01 20:48:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-01 20:48:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 490 proven. 120 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-04-01 20:48:33,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:33,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033404803] [2023-04-01 20:48:33,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033404803] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:48:33,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364381829] [2023-04-01 20:48:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:33,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:48:33,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:48:33,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 20:48:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:33,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:48:33,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:48:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-04-01 20:48:34,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:48:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 494 proven. 119 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-04-01 20:48:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364381829] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:48:34,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:48:34,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:48:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854462676] [2023-04-01 20:48:34,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:48:34,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:48:34,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:34,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:48:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:48:34,272 INFO L87 Difference]: Start difference. First operand 73886 states and 85748 transitions. Second operand has 13 states, 13 states have (on average 102.3076923076923) internal successors, (1330), 11 states have internal predecessors, (1330), 5 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:48:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:50,312 INFO L93 Difference]: Finished difference Result 269639 states and 325214 transitions. [2023-04-01 20:48:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-01 20:48:50,313 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 102.3076923076923) internal successors, (1330), 11 states have internal predecessors, (1330), 5 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 1256 [2023-04-01 20:48:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:51,080 INFO L225 Difference]: With dead ends: 269639 [2023-04-01 20:48:51,080 INFO L226 Difference]: Without dead ends: 195763 [2023-04-01 20:48:51,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2585 GetRequests, 2545 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=1287, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 20:48:51,154 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 12304 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 25190 mSolverCounterSat, 2947 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12317 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 28137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2947 IncrementalHoareTripleChecker+Valid, 25190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:51,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12317 Valid, 517 Invalid, 28137 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2947 Valid, 25190 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2023-04-01 20:48:51,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195763 states. [2023-04-01 20:48:54,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195763 to 193185. [2023-04-01 20:48:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193185 states, 189680 states have (on average 1.0491617460986926) internal successors, (199005), 190308 states have internal predecessors, (199005), 1148 states have call successors, (1148), 906 states have call predecessors, (1148), 2356 states have return successors, (27572), 1970 states have call predecessors, (27572), 1147 states have call successors, (27572) [2023-04-01 20:48:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193185 states to 193185 states and 227725 transitions. [2023-04-01 20:48:55,662 INFO L78 Accepts]: Start accepts. Automaton has 193185 states and 227725 transitions. Word has length 1256 [2023-04-01 20:48:55,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:55,662 INFO L495 AbstractCegarLoop]: Abstraction has 193185 states and 227725 transitions. [2023-04-01 20:48:55,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 102.3076923076923) internal successors, (1330), 11 states have internal predecessors, (1330), 5 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:48:55,663 INFO L276 IsEmpty]: Start isEmpty. Operand 193185 states and 227725 transitions. [2023-04-01 20:48:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1267 [2023-04-01 20:48:56,069 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:56,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:48:56,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 20:48:56,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:56,277 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:56,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1475238846, now seen corresponding path program 1 times [2023-04-01 20:48:56,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:56,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687259121] [2023-04-01 20:48:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:56,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-01 20:48:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:58,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 485 proven. 145 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:48:59,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687259121] [2023-04-01 20:48:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687259121] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:48:59,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382435800] [2023-04-01 20:48:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:59,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:59,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:48:59,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:48:59,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 20:48:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:59,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:48:59,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:49:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-04-01 20:49:00,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:49:00,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382435800] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:49:00,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:49:00,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:49:00,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235060600] [2023-04-01 20:49:00,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:49:00,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:49:00,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:49:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:49:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:49:00,094 INFO L87 Difference]: Start difference. First operand 193185 states and 227725 transitions. Second operand has 3 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 20:49:03,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:49:03,777 INFO L93 Difference]: Finished difference Result 383662 states and 452606 transitions. [2023-04-01 20:49:03,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:49:03,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1266 [2023-04-01 20:49:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:49:04,316 INFO L225 Difference]: With dead ends: 383662 [2023-04-01 20:49:04,316 INFO L226 Difference]: Without dead ends: 191317 [2023-04-01 20:49:04,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1277 GetRequests, 1271 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:49:04,471 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 118 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:49:04,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1040 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 20:49:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191317 states. [2023-04-01 20:49:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191317 to 191300. [2023-04-01 20:49:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191300 states, 187897 states have (on average 1.0342261983959298) internal successors, (194328), 188484 states have internal predecessors, (194328), 1140 states have call successors, (1140), 898 states have call predecessors, (1140), 2262 states have return successors, (19683), 1917 states have call predecessors, (19683), 1139 states have call successors, (19683) [2023-04-01 20:49:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191300 states to 191300 states and 215151 transitions. [2023-04-01 20:49:08,053 INFO L78 Accepts]: Start accepts. Automaton has 191300 states and 215151 transitions. Word has length 1266 [2023-04-01 20:49:08,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:49:08,054 INFO L495 AbstractCegarLoop]: Abstraction has 191300 states and 215151 transitions. [2023-04-01 20:49:08,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 20:49:08,054 INFO L276 IsEmpty]: Start isEmpty. Operand 191300 states and 215151 transitions. [2023-04-01 20:49:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1603 [2023-04-01 20:49:08,475 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:49:08,476 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:49:08,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 20:49:08,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:08,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:49:08,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:49:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1681814098, now seen corresponding path program 1 times [2023-04-01 20:49:08,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:49:08,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470292035] [2023-04-01 20:49:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:08,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:49:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:49:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:09,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:49:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:09,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-01 20:49:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:09,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-04-01 20:49:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2023-04-01 20:49:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:10,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2023-04-01 20:49:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:10,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2023-04-01 20:49:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 930 proven. 289 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2023-04-01 20:49:10,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:49:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470292035] [2023-04-01 20:49:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470292035] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:49:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119375757] [2023-04-01 20:49:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:10,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:10,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:49:10,171 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:49:10,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 20:49:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:10,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:49:10,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:49:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 961 proven. 2 refuted. 0 times theorem prover too weak. 956 trivial. 0 not checked. [2023-04-01 20:49:10,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:49:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 931 proven. 293 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2023-04-01 20:49:11,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119375757] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:49:11,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:49:11,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:49:11,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006441847] [2023-04-01 20:49:11,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:49:11,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:49:11,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:49:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:49:11,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:49:11,136 INFO L87 Difference]: Start difference. First operand 191300 states and 215151 transitions. Second operand has 12 states, 12 states have (on average 119.25) internal successors, (1431), 10 states have internal predecessors, (1431), 4 states have call successors, (16), 6 states have call predecessors, (16), 7 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 20:49:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:49:21,282 INFO L93 Difference]: Finished difference Result 522633 states and 603637 transitions. [2023-04-01 20:49:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 20:49:21,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 119.25) internal successors, (1431), 10 states have internal predecessors, (1431), 4 states have call successors, (16), 6 states have call predecessors, (16), 7 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1602 [2023-04-01 20:49:21,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:49:22,560 INFO L225 Difference]: With dead ends: 522633 [2023-04-01 20:49:22,561 INFO L226 Difference]: Without dead ends: 330505 [2023-04-01 20:49:22,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3242 GetRequests, 3222 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2023-04-01 20:49:22,757 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 7689 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 10515 mSolverCounterSat, 924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7697 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 11439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 10515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:49:22,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7697 Valid, 281 Invalid, 11439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [924 Valid, 10515 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 20:49:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330505 states. [2023-04-01 20:49:27,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330505 to 328660. [2023-04-01 20:49:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328660 states, 323033 states have (on average 1.0294056644367604) internal successors, (332532), 323836 states have internal predecessors, (332532), 2278 states have call successors, (2278), 1542 states have call predecessors, (2278), 3348 states have return successors, (39696), 3281 states have call predecessors, (39696), 2277 states have call successors, (39696) [2023-04-01 20:49:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328660 states to 328660 states and 374506 transitions. [2023-04-01 20:49:29,311 INFO L78 Accepts]: Start accepts. Automaton has 328660 states and 374506 transitions. Word has length 1602 [2023-04-01 20:49:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:49:29,312 INFO L495 AbstractCegarLoop]: Abstraction has 328660 states and 374506 transitions. [2023-04-01 20:49:29,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 119.25) internal successors, (1431), 10 states have internal predecessors, (1431), 4 states have call successors, (16), 6 states have call predecessors, (16), 7 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 20:49:29,312 INFO L276 IsEmpty]: Start isEmpty. Operand 328660 states and 374506 transitions. [2023-04-01 20:49:30,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1801 [2023-04-01 20:49:30,100 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:49:30,101 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:49:30,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 20:49:30,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:30,308 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:49:30,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:49:30,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1334743222, now seen corresponding path program 1 times [2023-04-01 20:49:30,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:49:30,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263093512] [2023-04-01 20:49:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:30,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:49:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:31,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:49:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:49:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:31,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:49:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:32,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 20:49:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2023-04-01 20:49:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2023-04-01 20:49:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:32,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2303 backedges. 1177 proven. 352 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2023-04-01 20:49:32,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:49:32,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263093512] [2023-04-01 20:49:32,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263093512] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:49:32,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547825250] [2023-04-01 20:49:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:32,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:32,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:49:32,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:49:32,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 20:49:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:32,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:49:32,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:49:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2303 backedges. 1527 proven. 2 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2023-04-01 20:49:32,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:49:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2303 backedges. 1178 proven. 355 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-04-01 20:49:33,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547825250] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:49:33,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:49:33,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:49:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427364227] [2023-04-01 20:49:33,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:49:33,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:49:33,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:49:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:49:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:49:33,402 INFO L87 Difference]: Start difference. First operand 328660 states and 374506 transitions. Second operand has 11 states, 11 states have (on average 144.63636363636363) internal successors, (1591), 9 states have internal predecessors, (1591), 4 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 20:49:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:49:43,365 INFO L93 Difference]: Finished difference Result 705604 states and 812957 transitions. [2023-04-01 20:49:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 20:49:43,366 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 144.63636363636363) internal successors, (1591), 9 states have internal predecessors, (1591), 4 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 1800 [2023-04-01 20:49:43,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:49:44,661 INFO L225 Difference]: With dead ends: 705604 [2023-04-01 20:49:44,662 INFO L226 Difference]: Without dead ends: 378626 [2023-04-01 20:49:45,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3641 GetRequests, 3620 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 20:49:45,096 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 4267 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9911 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 10580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 9911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:49:45,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4270 Valid, 270 Invalid, 10580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 9911 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 20:49:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378626 states. [2023-04-01 20:49:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378626 to 370857. [2023-04-01 20:49:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370857 states, 364671 states have (on average 1.025291289957249) internal successors, (373894), 365518 states have internal predecessors, (373894), 2542 states have call successors, (2542), 1742 states have call predecessors, (2542), 3643 states have return successors, (38634), 3596 states have call predecessors, (38634), 2541 states have call successors, (38634) [2023-04-01 20:49:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370857 states to 370857 states and 415070 transitions. [2023-04-01 20:49:52,379 INFO L78 Accepts]: Start accepts. Automaton has 370857 states and 415070 transitions. Word has length 1800 [2023-04-01 20:49:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:49:52,380 INFO L495 AbstractCegarLoop]: Abstraction has 370857 states and 415070 transitions. [2023-04-01 20:49:52,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 144.63636363636363) internal successors, (1591), 9 states have internal predecessors, (1591), 4 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 20:49:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 370857 states and 415070 transitions. [2023-04-01 20:49:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1907 [2023-04-01 20:49:52,972 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:49:52,973 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:49:53,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 20:49:53,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:53,181 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:49:53,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:49:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1917155932, now seen corresponding path program 1 times [2023-04-01 20:49:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:49:53,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706601421] [2023-04-01 20:49:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:53,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:49:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:49:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:49:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:56,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-01 20:49:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:56,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-01 20:49:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-04-01 20:49:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:56,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2023-04-01 20:49:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 804 [2023-04-01 20:49:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 1110 proven. 513 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2023-04-01 20:49:56,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:49:56,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706601421] [2023-04-01 20:49:56,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706601421] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:49:56,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485817148] [2023-04-01 20:49:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:56,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:56,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:49:56,894 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:49:56,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 20:49:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:57,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 2583 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:49:57,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:49:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 1128 proven. 0 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2023-04-01 20:49:58,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:49:58,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485817148] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:49:58,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:49:58,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:49:58,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104220795] [2023-04-01 20:49:58,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:49:58,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:49:58,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:49:58,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:49:58,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:49:58,219 INFO L87 Difference]: Start difference. First operand 370857 states and 415070 transitions. Second operand has 3 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 20:50:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:50:03,994 INFO L93 Difference]: Finished difference Result 677850 states and 760959 transitions. [2023-04-01 20:50:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:50:03,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1906 [2023-04-01 20:50:03,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:50:04,984 INFO L225 Difference]: With dead ends: 677850 [2023-04-01 20:50:04,984 INFO L226 Difference]: Without dead ends: 367461 [2023-04-01 20:50:05,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1927 GetRequests, 1921 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:50:05,345 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 184 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:50:05,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 98 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 20:50:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367461 states. [2023-04-01 20:50:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367461 to 367461. [2023-04-01 20:50:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367461 states, 361331 states have (on average 1.0225942418447351) internal successors, (369495), 362166 states have internal predecessors, (369495), 2526 states have call successors, (2526), 1726 states have call predecessors, (2526), 3603 states have return successors, (34927), 3568 states have call predecessors, (34927), 2525 states have call successors, (34927) [2023-04-01 20:50:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367461 states to 367461 states and 406948 transitions. [2023-04-01 20:50:12,671 INFO L78 Accepts]: Start accepts. Automaton has 367461 states and 406948 transitions. Word has length 1906 [2023-04-01 20:50:12,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:50:12,673 INFO L495 AbstractCegarLoop]: Abstraction has 367461 states and 406948 transitions. [2023-04-01 20:50:12,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 20:50:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 367461 states and 406948 transitions. [2023-04-01 20:50:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3829 [2023-04-01 20:50:13,729 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:50:13,730 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:50:13,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 20:50:13,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 20:50:13,938 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:50:13,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:50:13,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1943847794, now seen corresponding path program 1 times [2023-04-01 20:50:13,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:50:13,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274490114] [2023-04-01 20:50:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:50:13,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:50:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat