/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_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:44:43,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:44:43,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:44:43,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:44:43,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:44:43,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:44:43,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:44:43,561 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 20:44:43,593 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:44:43,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:44:43,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:44:43,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:44:43,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:44:43,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:44:43,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:44:43,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:44:43,596 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:44:43,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:44:43,596 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:44:43,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:44:43,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:44:43,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:44:43,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:44:43,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:44:43,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:44:43,597 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:44:43,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:44:43,597 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:44:43,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:44:43,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:44:43,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:44:43,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:44:43,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:44:43,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:44:43,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:44:43,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:44:43,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:44:43,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:44:43,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:44:43,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:44:43,598 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:44:43,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:44:43,599 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:44:43,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:44:43,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:44:43,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:44:43,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:44:43,788 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:44:43,788 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:44:43,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label42.c [2023-04-01 20:44:44,824 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:44:45,151 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:44:45,152 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label42.c [2023-04-01 20:44:45,174 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b688a2608/dfc0907394e541baab8eb1e5149bf4d5/FLAGd30502fd8 [2023-04-01 20:44:45,187 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b688a2608/dfc0907394e541baab8eb1e5149bf4d5 [2023-04-01 20:44:45,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:44:45,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:44:45,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:44:45,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:44:45,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:44:45,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:44:45" (1/1) ... [2023-04-01 20:44:45,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:45, skipping insertion in model container [2023-04-01 20:44:45,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:44:45" (1/1) ... [2023-04-01 20:44:45,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:44:45,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:44:46,056 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_label42.c[184279,184292] [2023-04-01 20:44:46,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:44:46,075 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:44:46,363 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_label42.c[184279,184292] [2023-04-01 20:44:46,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:44:46,430 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:44:46,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46 WrapperNode [2023-04-01 20:44:46,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:44:46,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:44:46,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:44:46,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:44:46,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46" (1/1) ... [2023-04-01 20:44:46,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46" (1/1) ... [2023-04-01 20:44:46,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46" (1/1) ... [2023-04-01 20:44:46,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46" (1/1) ... [2023-04-01 20:44:46,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46" (1/1) ... [2023-04-01 20:44:46,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46" (1/1) ... [2023-04-01 20:44:46,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46" (1/1) ... [2023-04-01 20:44:46,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46" (1/1) ... [2023-04-01 20:44:46,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:44:46,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:44:46,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:44:46,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:44:46,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46" (1/1) ... [2023-04-01 20:44:46,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:44:46,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:44:46,622 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 20:44:46,652 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 20:44:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:44:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:44:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:44:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:44:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:44:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:44:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:44:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:44:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:44:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:44:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:44:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:44:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:44:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:44:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:44:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:44:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:44:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:44:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:44:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:44:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:44:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:44:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:44:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:44:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:44:46,747 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:44:46,749 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:44:49,496 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:44:49,510 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:44:49,510 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:44:49,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:44:49 BoogieIcfgContainer [2023-04-01 20:44:49,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:44:49,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:44:49,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:44:49,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:44:49,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:44:45" (1/3) ... [2023-04-01 20:44:49,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f45d710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:44:49, skipping insertion in model container [2023-04-01 20:44:49,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:44:46" (2/3) ... [2023-04-01 20:44:49,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f45d710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:44:49, skipping insertion in model container [2023-04-01 20:44:49,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:44:49" (3/3) ... [2023-04-01 20:44:49,520 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label42.c [2023-04-01 20:44:49,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:44:49,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:44:49,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:44:49,598 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;@58bbd7af, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:44:49,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:44:49,606 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 20:44:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2023-04-01 20:44:49,642 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:49,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:44:49,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:49,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1226241784, now seen corresponding path program 1 times [2023-04-01 20:44:49,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:49,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497505503] [2023-04-01 20:44:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:49,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:52,589 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 20:44:52,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:52,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497505503] [2023-04-01 20:44:52,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497505503] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:44:52,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:44:52,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:44:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890010843] [2023-04-01 20:44:52,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:44:52,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:44:52,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:52,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:44:52,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:44:52,622 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 204.75) internal successors, (819), 3 states have internal predecessors, (819), 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 20:44:59,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:44:59,315 INFO L93 Difference]: Finished difference Result 3521 states and 6826 transitions. [2023-04-01 20:44:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:44:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 204.75) internal successors, (819), 3 states have internal predecessors, (819), 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 826 [2023-04-01 20:44:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:44:59,341 INFO L225 Difference]: With dead ends: 3521 [2023-04-01 20:44:59,341 INFO L226 Difference]: Without dead ends: 2547 [2023-04-01 20:44:59,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:44:59,352 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2837 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 5828 mSolverCounterSat, 1509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 7337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1509 IncrementalHoareTripleChecker+Valid, 5828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:44:59,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 65 Invalid, 7337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1509 Valid, 5828 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 20:44:59,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2023-04-01 20:44:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534. [2023-04-01 20:44:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 2497 states have (on average 1.632358830596716) internal successors, (4076), 2500 states have internal predecessors, (4076), 14 states have call successors, (14), 14 states have call predecessors, (14), 22 states have return successors, (49), 19 states have call predecessors, (49), 13 states have call successors, (49) [2023-04-01 20:44:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4139 transitions. [2023-04-01 20:44:59,545 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 4139 transitions. Word has length 826 [2023-04-01 20:44:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:44:59,549 INFO L495 AbstractCegarLoop]: Abstraction has 2534 states and 4139 transitions. [2023-04-01 20:44:59,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 204.75) internal successors, (819), 3 states have internal predecessors, (819), 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 20:44:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 4139 transitions. [2023-04-01 20:44:59,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2023-04-01 20:44:59,570 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:59,571 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:44:59,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:44:59,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:59,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash -57323764, now seen corresponding path program 1 times [2023-04-01 20:44:59,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:59,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667613307] [2023-04-01 20:44:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:59,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:00,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:45:00,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667613307] [2023-04-01 20:45:00,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667613307] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:45:00,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:45:00,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:45:00,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364180611] [2023-04-01 20:45:00,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:45:00,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:45:00,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:45:00,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:45:00,432 INFO L87 Difference]: Start difference. First operand 2534 states and 4139 transitions. Second operand has 7 states, 6 states have (on average 138.66666666666666) internal successors, (832), 4 states have internal predecessors, (832), 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 20:45:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:05,417 INFO L93 Difference]: Finished difference Result 7725 states and 12758 transitions. [2023-04-01 20:45:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:45:05,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 138.66666666666666) internal successors, (832), 4 states have internal predecessors, (832), 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 841 [2023-04-01 20:45:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:05,436 INFO L225 Difference]: With dead ends: 7725 [2023-04-01 20:45:05,437 INFO L226 Difference]: Without dead ends: 5197 [2023-04-01 20:45:05,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:45:05,450 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3099 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 6046 mSolverCounterSat, 1648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 7694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1648 IncrementalHoareTripleChecker+Valid, 6046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:05,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3099 Valid, 124 Invalid, 7694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1648 Valid, 6046 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 20:45:05,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5197 states. [2023-04-01 20:45:05,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5197 to 5152. [2023-04-01 20:45:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 5048 states have (on average 1.5305071315372425) internal successors, (7726), 5064 states have internal predecessors, (7726), 26 states have call successors, (26), 26 states have call predecessors, (26), 77 states have return successors, (253), 61 states have call predecessors, (253), 25 states have call successors, (253) [2023-04-01 20:45:05,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 8005 transitions. [2023-04-01 20:45:05,578 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 8005 transitions. Word has length 841 [2023-04-01 20:45:05,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:05,578 INFO L495 AbstractCegarLoop]: Abstraction has 5152 states and 8005 transitions. [2023-04-01 20:45:05,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 138.66666666666666) internal successors, (832), 4 states have internal predecessors, (832), 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 20:45:05,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 8005 transitions. [2023-04-01 20:45:05,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2023-04-01 20:45:05,593 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:05,594 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:05,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:45:05,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:05,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:05,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1697043278, now seen corresponding path program 1 times [2023-04-01 20:45:05,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:05,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837441519] [2023-04-01 20:45:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:05,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:06,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:45:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 20:45:06,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:06,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837441519] [2023-04-01 20:45:06,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837441519] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:45:06,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484033150] [2023-04-01 20:45:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:06,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:06,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:06,658 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 20:45:06,660 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 20:45:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:06,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:45:06,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:45:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:45:07,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:45:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:45:07,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484033150] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:45:07,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:45:07,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:45:07,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192217594] [2023-04-01 20:45:07,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:45:07,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:45:07,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:07,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:45:07,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:45:07,219 INFO L87 Difference]: Start difference. First operand 5152 states and 8005 transitions. Second operand has 11 states, 11 states have (on average 80.36363636363636) internal successors, (884), 9 states have internal predecessors, (884), 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 20:45:16,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:16,444 INFO L93 Difference]: Finished difference Result 26348 states and 44071 transitions. [2023-04-01 20:45:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 20:45:16,445 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 80.36363636363636) internal successors, (884), 9 states have internal predecessors, (884), 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 867 [2023-04-01 20:45:16,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:16,527 INFO L225 Difference]: With dead ends: 26348 [2023-04-01 20:45:16,527 INFO L226 Difference]: Without dead ends: 21202 [2023-04-01 20:45:16,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1781 GetRequests, 1743 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 20:45:16,545 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 12234 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 8952 mSolverCounterSat, 6149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12234 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 15101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6149 IncrementalHoareTripleChecker+Valid, 8952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:16,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12234 Valid, 306 Invalid, 15101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6149 Valid, 8952 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-04-01 20:45:16,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21202 states. [2023-04-01 20:45:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21202 to 21042. [2023-04-01 20:45:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21042 states, 20461 states have (on average 1.322076144860955) internal successors, (27051), 20598 states have internal predecessors, (27051), 98 states have call successors, (98), 98 states have call predecessors, (98), 482 states have return successors, (2870), 345 states have call predecessors, (2870), 97 states have call successors, (2870) [2023-04-01 20:45:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21042 states to 21042 states and 30019 transitions. [2023-04-01 20:45:17,101 INFO L78 Accepts]: Start accepts. Automaton has 21042 states and 30019 transitions. Word has length 867 [2023-04-01 20:45:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:17,101 INFO L495 AbstractCegarLoop]: Abstraction has 21042 states and 30019 transitions. [2023-04-01 20:45:17,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 80.36363636363636) internal successors, (884), 9 states have internal predecessors, (884), 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 20:45:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 21042 states and 30019 transitions. [2023-04-01 20:45:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2023-04-01 20:45:17,151 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:17,152 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:17,160 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 20:45:17,358 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 20:45:17,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:17,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:17,359 INFO L85 PathProgramCache]: Analyzing trace with hash 640060364, now seen corresponding path program 1 times [2023-04-01 20:45:17,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:17,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465935025] [2023-04-01 20:45:17,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:17,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:19,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:45:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 20:45:19,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:19,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465935025] [2023-04-01 20:45:19,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465935025] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:45:19,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615117575] [2023-04-01 20:45:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:19,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:19,146 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 20:45:19,148 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 20:45:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:19,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:45:19,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:45:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:45:19,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:45:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:45:19,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615117575] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:45:19,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:45:19,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:45:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856689972] [2023-04-01 20:45:19,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:45:19,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:45:19,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:19,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:45:19,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:45:19,713 INFO L87 Difference]: Start difference. First operand 21042 states and 30019 transitions. Second operand has 13 states, 13 states have (on average 80.92307692307692) internal successors, (1052), 11 states have internal predecessors, (1052), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:45:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:44,664 INFO L93 Difference]: Finished difference Result 174522 states and 275746 transitions. [2023-04-01 20:45:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-01 20:45:44,666 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 80.92307692307692) internal successors, (1052), 11 states have internal predecessors, (1052), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 918 [2023-04-01 20:45:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:45,481 INFO L225 Difference]: With dead ends: 174522 [2023-04-01 20:45:45,481 INFO L226 Difference]: Without dead ends: 153486 [2023-04-01 20:45:45,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1903 GetRequests, 1863 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=353, Invalid=1287, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 20:45:45,557 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 12611 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 32007 mSolverCounterSat, 12091 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12624 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 44098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12091 IncrementalHoareTripleChecker+Valid, 32007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:45,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12624 Valid, 493 Invalid, 44098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12091 Valid, 32007 Invalid, 0 Unknown, 0 Unchecked, 21.9s Time] [2023-04-01 20:45:45,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153486 states. [2023-04-01 20:45:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153486 to 153127. [2023-04-01 20:45:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153127 states, 149993 states have (on average 1.2252371777349609) internal successors, (183777), 150625 states have internal predecessors, (183777), 895 states have call successors, (895), 714 states have call predecessors, (895), 2238 states have return successors, (33961), 1787 states have call predecessors, (33961), 894 states have call successors, (33961) [2023-04-01 20:45:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153127 states to 153127 states and 218633 transitions. [2023-04-01 20:45:49,353 INFO L78 Accepts]: Start accepts. Automaton has 153127 states and 218633 transitions. Word has length 918 [2023-04-01 20:45:49,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:49,353 INFO L495 AbstractCegarLoop]: Abstraction has 153127 states and 218633 transitions. [2023-04-01 20:45:49,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.92307692307692) internal successors, (1052), 11 states have internal predecessors, (1052), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:45:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 153127 states and 218633 transitions. [2023-04-01 20:45:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2023-04-01 20:45:49,996 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:49,997 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:50,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 20:45:50,202 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 20:45:50,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:50,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:50,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1148837054, now seen corresponding path program 1 times [2023-04-01 20:45:50,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:50,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449890143] [2023-04-01 20:45:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:50,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:52,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:45:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:52,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:45:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:52,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-04-01 20:45:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:52,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 20:45:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 378 proven. 98 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-04-01 20:45:52,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:52,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449890143] [2023-04-01 20:45:52,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449890143] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:45:52,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018448899] [2023-04-01 20:45:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:52,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:52,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:52,657 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 20:45:52,659 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 20:45:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:53,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:45:53,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:45:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-04-01 20:45:53,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:45:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 391 proven. 88 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-04-01 20:45:53,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018448899] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:45:53,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:45:53,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 20:45:53,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563707771] [2023-04-01 20:45:53,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:45:53,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:45:53,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:53,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:45:53,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:45:53,300 INFO L87 Difference]: Start difference. First operand 153127 states and 218633 transitions. Second operand has 14 states, 14 states have (on average 82.42857142857143) internal successors, (1154), 12 states have internal predecessors, (1154), 5 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:46:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:11,458 INFO L93 Difference]: Finished difference Result 360285 states and 518768 transitions. [2023-04-01 20:46:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-04-01 20:46:11,458 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 82.42857142857143) internal successors, (1154), 12 states have internal predecessors, (1154), 5 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 1128 [2023-04-01 20:46:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:12,396 INFO L225 Difference]: With dead ends: 360285 [2023-04-01 20:46:12,396 INFO L226 Difference]: Without dead ends: 201781 [2023-04-01 20:46:12,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2378 GetRequests, 2312 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=743, Invalid=3679, Unknown=0, NotChecked=0, Total=4422 [2023-04-01 20:46:12,674 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 25772 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 14096 mSolverCounterSat, 10511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25772 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 24607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10511 IncrementalHoareTripleChecker+Valid, 14096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:12,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25772 Valid, 699 Invalid, 24607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10511 Valid, 14096 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-04-01 20:46:12,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201781 states. [2023-04-01 20:46:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201781 to 197993. [2023-04-01 20:46:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197993 states, 194446 states have (on average 1.0471647655390186) internal successors, (203617), 195133 states have internal predecessors, (203617), 1053 states have call successors, (1053), 930 states have call predecessors, (1053), 2493 states have return successors, (23610), 1929 states have call predecessors, (23610), 1052 states have call successors, (23610) [2023-04-01 20:46:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197993 states to 197993 states and 228280 transitions. [2023-04-01 20:46:16,431 INFO L78 Accepts]: Start accepts. Automaton has 197993 states and 228280 transitions. Word has length 1128 [2023-04-01 20:46:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:16,432 INFO L495 AbstractCegarLoop]: Abstraction has 197993 states and 228280 transitions. [2023-04-01 20:46:16,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.42857142857143) internal successors, (1154), 12 states have internal predecessors, (1154), 5 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:46:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 197993 states and 228280 transitions. [2023-04-01 20:46:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1330 [2023-04-01 20:46:16,739 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:16,739 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:46:16,748 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 20:46:16,951 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 20:46:16,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:16,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2142959662, now seen corresponding path program 1 times [2023-04-01 20:46:16,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:16,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991322588] [2023-04-01 20:46:16,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:16,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:46:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-01 20:46:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:19,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:19,684 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 508 proven. 152 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 20:46:19,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:19,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991322588] [2023-04-01 20:46:19,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991322588] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:19,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119745731] [2023-04-01 20:46:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:19,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:19,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:19,686 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 20:46:19,688 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 20:46:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:20,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:46:20,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-04-01 20:46:20,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:46:20,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119745731] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:46:20,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:46:20,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-04-01 20:46:20,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581205158] [2023-04-01 20:46:20,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:46:20,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:46:20,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:20,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:46:20,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:46:20,843 INFO L87 Difference]: Start difference. First operand 197993 states and 228280 transitions. Second operand has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 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 20:46:24,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:24,618 INFO L93 Difference]: Finished difference Result 395130 states and 455749 transitions. [2023-04-01 20:46:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:46:24,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 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 1329 [2023-04-01 20:46:24,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:25,372 INFO L225 Difference]: With dead ends: 395130 [2023-04-01 20:46:25,372 INFO L226 Difference]: Without dead ends: 197977 [2023-04-01 20:46:25,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1335 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:46:25,619 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 45 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:25,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1038 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 20:46:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197977 states. [2023-04-01 20:46:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197977 to 191283. [2023-04-01 20:46:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191283 states, 187813 states have (on average 1.0412325025424225) internal successors, (195557), 188496 states have internal predecessors, (195557), 1018 states have call successors, (1018), 898 states have call predecessors, (1018), 2451 states have return successors, (20254), 1888 states have call predecessors, (20254), 1017 states have call successors, (20254) [2023-04-01 20:46:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191283 states to 191283 states and 216829 transitions. [2023-04-01 20:46:28,998 INFO L78 Accepts]: Start accepts. Automaton has 191283 states and 216829 transitions. Word has length 1329 [2023-04-01 20:46:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:29,000 INFO L495 AbstractCegarLoop]: Abstraction has 191283 states and 216829 transitions. [2023-04-01 20:46:29,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 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 20:46:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 191283 states and 216829 transitions. [2023-04-01 20:46:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1396 [2023-04-01 20:46:29,362 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:29,363 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:46:29,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 20:46:29,568 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 20:46:29,569 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:29,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:29,570 INFO L85 PathProgramCache]: Analyzing trace with hash -538499626, now seen corresponding path program 1 times [2023-04-01 20:46:29,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:29,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021628885] [2023-04-01 20:46:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:29,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:32,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:32,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:32,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-01 20:46:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2023-04-01 20:46:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 557 proven. 225 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-04-01 20:46:32,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:32,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021628885] [2023-04-01 20:46:32,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021628885] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:32,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973060770] [2023-04-01 20:46:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:32,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:32,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:32,449 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 20:46:32,452 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 20:46:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:32,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:46:32,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 728 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-04-01 20:46:32,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:46:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 728 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-04-01 20:46:33,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973060770] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:46:33,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:46:33,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:46:33,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80178252] [2023-04-01 20:46:33,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:46:33,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:46:33,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:33,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:46:33,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:46:33,222 INFO L87 Difference]: Start difference. First operand 191283 states and 216829 transitions. Second operand has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 10 states have internal predecessors, (1471), 4 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 20:46:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:46,721 INFO L93 Difference]: Finished difference Result 426781 states and 484202 transitions. [2023-04-01 20:46:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-01 20:46:46,722 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 10 states have internal predecessors, (1471), 4 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1395 [2023-04-01 20:46:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:47,358 INFO L225 Difference]: With dead ends: 426781 [2023-04-01 20:46:47,358 INFO L226 Difference]: Without dead ends: 236338 [2023-04-01 20:46:47,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2857 GetRequests, 2819 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2023-04-01 20:46:47,497 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 6270 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 20727 mSolverCounterSat, 1294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6277 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 22021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1294 IncrementalHoareTripleChecker+Valid, 20727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:47,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6277 Valid, 545 Invalid, 22021 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1294 Valid, 20727 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-04-01 20:46:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236338 states. [2023-04-01 20:46:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236338 to 234565. [2023-04-01 20:46:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234565 states, 230408 states have (on average 1.0307628207353912) internal successors, (237496), 231206 states have internal predecessors, (237496), 1248 states have call successors, (1248), 1102 states have call predecessors, (1248), 2908 states have return successors, (19312), 2256 states have call predecessors, (19312), 1247 states have call successors, (19312) [2023-04-01 20:46:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234565 states to 234565 states and 258056 transitions. [2023-04-01 20:46:51,522 INFO L78 Accepts]: Start accepts. Automaton has 234565 states and 258056 transitions. Word has length 1395 [2023-04-01 20:46:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:51,522 INFO L495 AbstractCegarLoop]: Abstraction has 234565 states and 258056 transitions. [2023-04-01 20:46:51,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 10 states have internal predecessors, (1471), 4 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 20:46:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 234565 states and 258056 transitions. [2023-04-01 20:46:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1599 [2023-04-01 20:46:51,765 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:51,766 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:51,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 20:46:51,983 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 20:46:51,984 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:51,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:51,984 INFO L85 PathProgramCache]: Analyzing trace with hash 338065174, now seen corresponding path program 1 times [2023-04-01 20:46:51,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:51,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248595508] [2023-04-01 20:46:51,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:51,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:55,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:56,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-01 20:46:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-04-01 20:46:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:56,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-04-01 20:46:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-04-01 20:46:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2023-04-01 20:46:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:56,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2023-04-01 20:46:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:56,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2023-04-01 20:46:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 745 proven. 503 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2023-04-01 20:46:56,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:56,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248595508] [2023-04-01 20:46:56,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248595508] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:56,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317903582] [2023-04-01 20:46:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:56,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:56,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:56,412 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 20:46:56,413 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 20:46:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:56,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 2363 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:46:56,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 1591 proven. 2 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-04-01 20:46:57,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:46:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 1063 proven. 266 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-04-01 20:46:57,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317903582] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:46:57,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:46:57,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:46:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995086642] [2023-04-01 20:46:57,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:46:57,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:46:57,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:46:57,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:46:57,441 INFO L87 Difference]: Start difference. First operand 234565 states and 258056 transitions. Second operand has 11 states, 11 states have (on average 146.45454545454547) internal successors, (1611), 9 states have internal predecessors, (1611), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:47:05,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:05,793 INFO L93 Difference]: Finished difference Result 388308 states and 424426 transitions. [2023-04-01 20:47:05,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 20:47:05,794 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 146.45454545454547) internal successors, (1611), 9 states have internal predecessors, (1611), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 1598 [2023-04-01 20:47:05,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:47:06,145 INFO L225 Difference]: With dead ends: 388308 [2023-04-01 20:47:06,146 INFO L226 Difference]: Without dead ends: 158796 [2023-04-01 20:47:06,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3270 GetRequests, 3234 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=274, Invalid=986, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 20:47:06,348 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 7577 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 11695 mSolverCounterSat, 1081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7581 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 12776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1081 IncrementalHoareTripleChecker+Valid, 11695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:06,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7581 Valid, 287 Invalid, 12776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1081 Valid, 11695 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 20:47:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158796 states. [2023-04-01 20:47:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158796 to 158705. [2023-04-01 20:47:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158705 states, 155815 states have (on average 1.0209543368738567) internal successors, (159080), 156436 states have internal predecessors, (159080), 746 states have call successors, (746), 746 states have call predecessors, (746), 2143 states have return successors, (7477), 1522 states have call predecessors, (7477), 745 states have call successors, (7477) [2023-04-01 20:47:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158705 states to 158705 states and 167303 transitions. [2023-04-01 20:47:08,937 INFO L78 Accepts]: Start accepts. Automaton has 158705 states and 167303 transitions. Word has length 1598 [2023-04-01 20:47:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:08,937 INFO L495 AbstractCegarLoop]: Abstraction has 158705 states and 167303 transitions. [2023-04-01 20:47:08,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 146.45454545454547) internal successors, (1611), 9 states have internal predecessors, (1611), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:47:08,938 INFO L276 IsEmpty]: Start isEmpty. Operand 158705 states and 167303 transitions. [2023-04-01 20:47:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1777 [2023-04-01 20:47:09,108 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:09,108 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:47:09,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 20:47:09,314 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 20:47:09,315 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:09,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:09,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1037258880, now seen corresponding path program 1 times [2023-04-01 20:47:09,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:09,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144740598] [2023-04-01 20:47:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:09,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:47:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:47:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-04-01 20:47:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:47:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-04-01 20:47:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2023-04-01 20:47:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 943 [2023-04-01 20:47:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1562 proven. 32 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2023-04-01 20:47:12,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:12,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144740598] [2023-04-01 20:47:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144740598] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:47:12,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051266280] [2023-04-01 20:47:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:12,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:12,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:47:12,010 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 20:47:12,012 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 20:47:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:12,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:47:12,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:47:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1629 proven. 5 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-04-01 20:47:12,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:47:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1572 proven. 18 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2023-04-01 20:47:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051266280] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:47:13,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:47:13,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 20:47:13,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228007316] [2023-04-01 20:47:13,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:47:13,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:47:13,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:47:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:47:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:47:13,480 INFO L87 Difference]: Start difference. First operand 158705 states and 167303 transitions. Second operand has 14 states, 14 states have (on average 135.85714285714286) internal successors, (1902), 12 states have internal predecessors, (1902), 8 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-04-01 20:47:21,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:21,309 INFO L93 Difference]: Finished difference Result 322113 states and 339866 transitions. [2023-04-01 20:47:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 20:47:21,310 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 135.85714285714286) internal successors, (1902), 12 states have internal predecessors, (1902), 8 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 1776 [2023-04-01 20:47:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:47:21,638 INFO L225 Difference]: With dead ends: 322113 [2023-04-01 20:47:21,638 INFO L226 Difference]: Without dead ends: 160060 [2023-04-01 20:47:22,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3607 GetRequests, 3581 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2023-04-01 20:47:22,008 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 11600 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 12096 mSolverCounterSat, 906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11600 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 13002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 906 IncrementalHoareTripleChecker+Valid, 12096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:22,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11600 Valid, 242 Invalid, 13002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [906 Valid, 12096 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-04-01 20:47:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160060 states. [2023-04-01 20:47:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160060 to 147479. [2023-04-01 20:47:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147479 states, 144849 states have (on average 1.0137591560866834) internal successors, (146842), 145386 states have internal predecessors, (146842), 694 states have call successors, (694), 694 states have call predecessors, (694), 1935 states have return successors, (4784), 1398 states have call predecessors, (4784), 693 states have call successors, (4784) [2023-04-01 20:47:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147479 states to 147479 states and 152320 transitions. [2023-04-01 20:47:23,998 INFO L78 Accepts]: Start accepts. Automaton has 147479 states and 152320 transitions. Word has length 1776 [2023-04-01 20:47:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:23,999 INFO L495 AbstractCegarLoop]: Abstraction has 147479 states and 152320 transitions. [2023-04-01 20:47:23,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 135.85714285714286) internal successors, (1902), 12 states have internal predecessors, (1902), 8 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-04-01 20:47:24,000 INFO L276 IsEmpty]: Start isEmpty. Operand 147479 states and 152320 transitions. [2023-04-01 20:47:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1826 [2023-04-01 20:47:24,314 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:24,315 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 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] [2023-04-01 20:47:24,322 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 20:47:24,517 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 20:47:24,518 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:24,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:24,518 INFO L85 PathProgramCache]: Analyzing trace with hash 959437360, now seen corresponding path program 1 times [2023-04-01 20:47:24,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:24,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043411602] [2023-04-01 20:47:24,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:24,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:29,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:29,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:47:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:47:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-04-01 20:47:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:47:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:29,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-04-01 20:47:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:30,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2023-04-01 20:47:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:30,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-04-01 20:47:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:30,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 992 [2023-04-01 20:47:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2815 backedges. 1336 proven. 387 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2023-04-01 20:47:30,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:30,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043411602] [2023-04-01 20:47:30,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043411602] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:47:30,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740992405] [2023-04-01 20:47:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:30,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:30,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:47:30,275 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 20:47:30,279 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 20:47:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:30,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 2614 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 20:47:30,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:47:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2815 backedges. 1635 proven. 443 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2023-04-01 20:47:31,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:47:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2815 backedges. 2072 proven. 6 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2023-04-01 20:47:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740992405] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:47:33,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:47:33,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 13 [2023-04-01 20:47:33,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872877871] [2023-04-01 20:47:33,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:47:33,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:47:33,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:47:33,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:47:33,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:47:33,822 INFO L87 Difference]: Start difference. First operand 147479 states and 152320 transitions. Second operand has 13 states, 13 states have (on average 199.6153846153846) internal successors, (2595), 11 states have internal predecessors, (2595), 8 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-04-01 20:47:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:46,481 INFO L93 Difference]: Finished difference Result 288628 states and 299962 transitions. [2023-04-01 20:47:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-01 20:47:46,482 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 199.6153846153846) internal successors, (2595), 11 states have internal predecessors, (2595), 8 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 1825 [2023-04-01 20:47:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:47:46,483 INFO L225 Difference]: With dead ends: 288628 [2023-04-01 20:47:46,483 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 20:47:46,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3739 GetRequests, 3689 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2023-04-01 20:47:46,653 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 6658 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 21559 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6658 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 22030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 21559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:46,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6658 Valid, 401 Invalid, 22030 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [471 Valid, 21559 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-04-01 20:47:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 20:47:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 20:47:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 20:47:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 20:47:46,655 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1825 [2023-04-01 20:47:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:46,655 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 20:47:46,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 199.6153846153846) internal successors, (2595), 11 states have internal predecessors, (2595), 8 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-04-01 20:47:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 20:47:46,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 20:47:46,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 20:47:46,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 20:47:46,865 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 20:47:46,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 20:48:05,202 WARN L223 SmtUtils]: Spent 18.32s on a formula simplification. DAG size of input: 799 DAG size of output: 594 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-01 20:48:25,210 WARN L223 SmtUtils]: Spent 17.47s on a formula simplification. DAG size of input: 799 DAG size of output: 594 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)