/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem05_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:57:02,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:57:02,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:57:02,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:57:02,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:57:02,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:57:02,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:57:02,950 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 20:57:02,968 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:57:02,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:57:02,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:57:02,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:57:02,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:57:02,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:57:02,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:57:02,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:57:02,970 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:57:02,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:57:02,970 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:57:02,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:57:02,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:57:02,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:57:02,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:57:02,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:57:02,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:57:02,970 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:57:02,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:57:02,971 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:57:02,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:57:02,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:57:02,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:57:02,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:57:02,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:57:02,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:57:02,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:57:02,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:57:02,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:57:02,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:57:02,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:57:02,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:57:02,972 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:57:02,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:57:02,972 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:57:02,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:57:03,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:57:03,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:57:03,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:57:03,166 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:57:03,166 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:57:03,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label29.c [2023-04-01 20:57:04,357 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:57:04,815 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:57:04,815 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label29.c [2023-04-01 20:57:04,855 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed4e7d00/df640dbb52214054ab9f5e9555748808/FLAGc966f54e5 [2023-04-01 20:57:04,868 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed4e7d00/df640dbb52214054ab9f5e9555748808 [2023-04-01 20:57:04,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:57:04,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:57:04,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:57:04,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:57:04,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:57:04,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:57:04" (1/1) ... [2023-04-01 20:57:04,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61199b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:04, skipping insertion in model container [2023-04-01 20:57:04,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:57:04" (1/1) ... [2023-04-01 20:57:04,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:57:05,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:57:06,131 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label29.c[382149,382162] [2023-04-01 20:57:06,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:57:06,155 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:57:06,754 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label29.c[382149,382162] [2023-04-01 20:57:06,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:57:06,822 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:57:06,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06 WrapperNode [2023-04-01 20:57:06,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:57:06,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:57:06,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:57:06,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:57:06,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06" (1/1) ... [2023-04-01 20:57:06,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06" (1/1) ... [2023-04-01 20:57:06,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06" (1/1) ... [2023-04-01 20:57:06,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06" (1/1) ... [2023-04-01 20:57:07,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06" (1/1) ... [2023-04-01 20:57:07,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06" (1/1) ... [2023-04-01 20:57:07,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06" (1/1) ... [2023-04-01 20:57:07,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06" (1/1) ... [2023-04-01 20:57:07,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:57:07,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:57:07,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:57:07,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:57:07,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06" (1/1) ... [2023-04-01 20:57:07,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:57:07,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:57:07,157 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 20:57:07,166 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 20:57:07,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:57:07,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:57:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:57:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:57:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:57:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:57:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:57:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 20:57:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 20:57:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-01 20:57:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-01 20:57:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:57:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:57:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:57:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:57:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:57:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 20:57:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 20:57:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-01 20:57:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-01 20:57:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:57:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:57:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:57:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:57:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:57:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:57:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:57:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:57:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:57:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:57:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:57:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:57:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:57:07,280 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:57:07,281 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:57:12,590 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:57:12,612 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:57:12,612 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:57:12,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:57:12 BoogieIcfgContainer [2023-04-01 20:57:12,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:57:12,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:57:12,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:57:12,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:57:12,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:57:04" (1/3) ... [2023-04-01 20:57:12,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4784edac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:57:12, skipping insertion in model container [2023-04-01 20:57:12,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:57:06" (2/3) ... [2023-04-01 20:57:12,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4784edac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:57:12, skipping insertion in model container [2023-04-01 20:57:12,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:57:12" (3/3) ... [2023-04-01 20:57:12,623 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label29.c [2023-04-01 20:57:12,635 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:57:12,636 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:57:12,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:57:12,694 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;@476bcdf8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:57:12,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:57:12,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 20:57:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2023-04-01 20:57:12,771 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:57:12,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:57:12,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:57:12,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:57:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash 936865298, now seen corresponding path program 1 times [2023-04-01 20:57:12,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:57:12,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598235456] [2023-04-01 20:57:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:12,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:57:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:57:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:57:19,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:57:19,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598235456] [2023-04-01 20:57:19,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598235456] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:57:19,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:57:19,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:57:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727871176] [2023-04-01 20:57:19,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:57:19,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:57:19,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:57:19,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:57:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:57:19,237 INFO L87 Difference]: Start difference. First operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 4 states have (on average 425.0) internal successors, (1700), 3 states have internal predecessors, (1700), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:57:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:57:31,541 INFO L93 Difference]: Finished difference Result 8125 states and 15405 transitions. [2023-04-01 20:57:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:57:31,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 425.0) internal successors, (1700), 3 states have internal predecessors, (1700), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1711 [2023-04-01 20:57:31,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:57:31,591 INFO L225 Difference]: With dead ends: 8125 [2023-04-01 20:57:31,592 INFO L226 Difference]: Without dead ends: 5835 [2023-04-01 20:57:31,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:57:31,608 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 8725 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 11197 mSolverCounterSat, 4583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8725 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 15780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4583 IncrementalHoareTripleChecker+Valid, 11197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:57:31,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8725 Valid, 631 Invalid, 15780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4583 Valid, 11197 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-04-01 20:57:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2023-04-01 20:57:31,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5801. [2023-04-01 20:57:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5731 states have (on average 1.6169952887803176) internal successors, (9267), 5734 states have internal predecessors, (9267), 26 states have call successors, (26), 26 states have call predecessors, (26), 43 states have return successors, (91), 40 states have call predecessors, (91), 25 states have call successors, (91) [2023-04-01 20:57:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9384 transitions. [2023-04-01 20:57:31,805 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9384 transitions. Word has length 1711 [2023-04-01 20:57:31,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:57:31,809 INFO L495 AbstractCegarLoop]: Abstraction has 5801 states and 9384 transitions. [2023-04-01 20:57:31,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 425.0) internal successors, (1700), 3 states have internal predecessors, (1700), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:57:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9384 transitions. [2023-04-01 20:57:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1736 [2023-04-01 20:57:31,951 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:57:31,951 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:57:31,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:57:31,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:57:31,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:57:31,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1338648133, now seen corresponding path program 1 times [2023-04-01 20:57:31,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:57:31,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154976235] [2023-04-01 20:57:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:31,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:57:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:33,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:57:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:33,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:57:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-01 20:57:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:57:34,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:57:34,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154976235] [2023-04-01 20:57:34,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154976235] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:57:34,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670070776] [2023-04-01 20:57:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:34,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:57:34,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:57:34,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:57:34,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 20:57:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:34,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:57:34,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:57:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 20:57:34,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:57:34,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670070776] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:57:34,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:57:34,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 20:57:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818565136] [2023-04-01 20:57:34,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:57:34,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:57:34,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:57:34,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:57:34,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:57:34,686 INFO L87 Difference]: Start difference. First operand 5801 states and 9384 transitions. Second operand has 5 states, 5 states have (on average 341.8) internal successors, (1709), 4 states have internal predecessors, (1709), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:57:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:57:41,470 INFO L93 Difference]: Finished difference Result 17259 states and 28406 transitions. [2023-04-01 20:57:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:57:41,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 341.8) internal successors, (1709), 4 states have internal predecessors, (1709), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1735 [2023-04-01 20:57:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:57:41,511 INFO L225 Difference]: With dead ends: 17259 [2023-04-01 20:57:41,512 INFO L226 Difference]: Without dead ends: 11464 [2023-04-01 20:57:41,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1747 GetRequests, 1735 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:57:41,524 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 5972 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 10927 mSolverCounterSat, 3662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5972 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 14589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3662 IncrementalHoareTripleChecker+Valid, 10927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:57:41,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5972 Valid, 1988 Invalid, 14589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3662 Valid, 10927 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-04-01 20:57:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2023-04-01 20:57:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11230. [2023-04-01 20:57:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11230 states, 11041 states have (on average 1.4966941400235485) internal successors, (16525), 11058 states have internal predecessors, (16525), 50 states have call successors, (50), 50 states have call predecessors, (50), 138 states have return successors, (480), 121 states have call predecessors, (480), 49 states have call successors, (480) [2023-04-01 20:57:41,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11230 states to 11230 states and 17055 transitions. [2023-04-01 20:57:41,758 INFO L78 Accepts]: Start accepts. Automaton has 11230 states and 17055 transitions. Word has length 1735 [2023-04-01 20:57:41,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:57:41,759 INFO L495 AbstractCegarLoop]: Abstraction has 11230 states and 17055 transitions. [2023-04-01 20:57:41,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 341.8) internal successors, (1709), 4 states have internal predecessors, (1709), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:57:41,769 INFO L276 IsEmpty]: Start isEmpty. Operand 11230 states and 17055 transitions. [2023-04-01 20:57:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1752 [2023-04-01 20:57:41,833 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:57:41,834 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:57:41,854 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 20:57:42,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:57:42,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:57:42,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:57:42,043 INFO L85 PathProgramCache]: Analyzing trace with hash -54320989, now seen corresponding path program 1 times [2023-04-01 20:57:42,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:57:42,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660753071] [2023-04-01 20:57:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:42,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:57:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:43,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:57:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:57:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:57:43,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:57:43,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660753071] [2023-04-01 20:57:43,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660753071] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:57:43,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:57:43,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:57:43,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638417257] [2023-04-01 20:57:43,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:57:43,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:57:43,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:57:43,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:57:43,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:57:43,919 INFO L87 Difference]: Start difference. First operand 11230 states and 17055 transitions. Second operand has 8 states, 7 states have (on average 248.28571428571428) internal successors, (1738), 5 states have internal predecessors, (1738), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:57:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:57:55,304 INFO L93 Difference]: Finished difference Result 44734 states and 72693 transitions. [2023-04-01 20:57:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:57:55,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 248.28571428571428) internal successors, (1738), 5 states have internal predecessors, (1738), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1751 [2023-04-01 20:57:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:57:55,398 INFO L225 Difference]: With dead ends: 44734 [2023-04-01 20:57:55,399 INFO L226 Difference]: Without dead ends: 33510 [2023-04-01 20:57:55,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:57:55,422 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 21752 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 14425 mSolverCounterSat, 4729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21752 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 19154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4729 IncrementalHoareTripleChecker+Valid, 14425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:57:55,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21752 Valid, 1236 Invalid, 19154 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4729 Valid, 14425 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-04-01 20:57:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33510 states. [2023-04-01 20:57:55,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33510 to 33249. [2023-04-01 20:57:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33249 states, 32427 states have (on average 1.4168131495358807) internal successors, (45943), 32512 states have internal predecessors, (45943), 146 states have call successors, (146), 146 states have call predecessors, (146), 675 states have return successors, (4661), 590 states have call predecessors, (4661), 145 states have call successors, (4661) [2023-04-01 20:57:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33249 states to 33249 states and 50750 transitions. [2023-04-01 20:57:56,058 INFO L78 Accepts]: Start accepts. Automaton has 33249 states and 50750 transitions. Word has length 1751 [2023-04-01 20:57:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:57:56,059 INFO L495 AbstractCegarLoop]: Abstraction has 33249 states and 50750 transitions. [2023-04-01 20:57:56,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 248.28571428571428) internal successors, (1738), 5 states have internal predecessors, (1738), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:57:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 33249 states and 50750 transitions. [2023-04-01 20:57:56,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1753 [2023-04-01 20:57:56,150 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:57:56,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:57:56,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:57:56,151 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:57:56,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:57:56,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1445168343, now seen corresponding path program 1 times [2023-04-01 20:57:56,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:57:56,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94404708] [2023-04-01 20:57:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:56,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:57:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:57,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:57:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:57:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:57:57,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:57:57,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94404708] [2023-04-01 20:57:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94404708] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:57:57,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:57:57,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:57:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944171528] [2023-04-01 20:57:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:57:57,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:57:57,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:57:57,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:57:57,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:57:57,703 INFO L87 Difference]: Start difference. First operand 33249 states and 50750 transitions. Second operand has 7 states, 6 states have (on average 289.8333333333333) internal successors, (1739), 4 states have internal predecessors, (1739), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:58:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:58:07,643 INFO L93 Difference]: Finished difference Result 95611 states and 155646 transitions. [2023-04-01 20:58:07,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:58:07,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 289.8333333333333) internal successors, (1739), 4 states have internal predecessors, (1739), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1752 [2023-04-01 20:58:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:58:07,889 INFO L225 Difference]: With dead ends: 95611 [2023-04-01 20:58:07,889 INFO L226 Difference]: Without dead ends: 62368 [2023-04-01 20:58:07,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:58:07,960 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 13535 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 12041 mSolverCounterSat, 2693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13535 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 14734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2693 IncrementalHoareTripleChecker+Valid, 12041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:58:07,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13535 Valid, 781 Invalid, 14734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2693 Valid, 12041 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-04-01 20:58:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62368 states. [2023-04-01 20:58:08,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62368 to 62218. [2023-04-01 20:58:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62218 states, 60671 states have (on average 1.358853488487086) internal successors, (82443), 60849 states have internal predecessors, (82443), 274 states have call successors, (274), 274 states have call predecessors, (274), 1272 states have return successors, (12415), 1094 states have call predecessors, (12415), 273 states have call successors, (12415) [2023-04-01 20:58:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62218 states to 62218 states and 95132 transitions. [2023-04-01 20:58:09,473 INFO L78 Accepts]: Start accepts. Automaton has 62218 states and 95132 transitions. Word has length 1752 [2023-04-01 20:58:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:58:09,474 INFO L495 AbstractCegarLoop]: Abstraction has 62218 states and 95132 transitions. [2023-04-01 20:58:09,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 289.8333333333333) internal successors, (1739), 4 states have internal predecessors, (1739), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:58:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 62218 states and 95132 transitions. [2023-04-01 20:58:09,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1765 [2023-04-01 20:58:09,801 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:58:09,803 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:58:09,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 20:58:09,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:58:09,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:58:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash -376410904, now seen corresponding path program 1 times [2023-04-01 20:58:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:58:09,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143837637] [2023-04-01 20:58:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:58:09,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:58:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:11,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:58:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:58:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-01 20:58:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:58:11,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:58:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143837637] [2023-04-01 20:58:11,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143837637] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:58:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191566434] [2023-04-01 20:58:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:58:11,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:58:11,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:58:11,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:58:11,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 20:58:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:12,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 2241 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:58:12,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:58:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 20:58:12,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:58:12,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191566434] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:58:12,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:58:12,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 20:58:12,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846286976] [2023-04-01 20:58:12,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:58:12,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:58:12,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:58:12,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:58:12,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:58:12,165 INFO L87 Difference]: Start difference. First operand 62218 states and 95132 transitions. Second operand has 5 states, 5 states have (on average 347.6) internal successors, (1738), 4 states have internal predecessors, (1738), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:58:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:58:19,107 INFO L93 Difference]: Finished difference Result 147878 states and 239657 transitions. [2023-04-01 20:58:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 20:58:19,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 347.6) internal successors, (1738), 4 states have internal predecessors, (1738), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1764 [2023-04-01 20:58:19,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:58:19,383 INFO L225 Difference]: With dead ends: 147878 [2023-04-01 20:58:19,383 INFO L226 Difference]: Without dead ends: 85666 [2023-04-01 20:58:19,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1776 GetRequests, 1764 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:58:19,446 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 6416 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 10767 mSolverCounterSat, 2388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6416 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 13155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2388 IncrementalHoareTripleChecker+Valid, 10767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:58:19,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6416 Valid, 1580 Invalid, 13155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2388 Valid, 10767 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-01 20:58:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85666 states. [2023-04-01 20:58:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85666 to 85343. [2023-04-01 20:58:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85343 states, 82764 states have (on average 1.2338697984631) internal successors, (102120), 83100 states have internal predecessors, (102120), 370 states have call successors, (370), 370 states have call predecessors, (370), 2208 states have return successors, (22192), 1872 states have call predecessors, (22192), 369 states have call successors, (22192) [2023-04-01 20:58:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85343 states to 85343 states and 124682 transitions. [2023-04-01 20:58:21,917 INFO L78 Accepts]: Start accepts. Automaton has 85343 states and 124682 transitions. Word has length 1764 [2023-04-01 20:58:21,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:58:21,918 INFO L495 AbstractCegarLoop]: Abstraction has 85343 states and 124682 transitions. [2023-04-01 20:58:21,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 347.6) internal successors, (1738), 4 states have internal predecessors, (1738), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:58:21,919 INFO L276 IsEmpty]: Start isEmpty. Operand 85343 states and 124682 transitions. [2023-04-01 20:58:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1776 [2023-04-01 20:58:22,122 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:58:22,124 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:58:22,133 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 20:58:22,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:58:22,334 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:58:22,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:58:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2108056509, now seen corresponding path program 1 times [2023-04-01 20:58:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:58:22,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988253246] [2023-04-01 20:58:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:58:22,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:58:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:23,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:58:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:58:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:23,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 20:58:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-01 20:58:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 63 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-01 20:58:23,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:58:23,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988253246] [2023-04-01 20:58:23,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988253246] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:58:23,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965215590] [2023-04-01 20:58:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:58:23,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:58:23,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:58:24,003 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 20:58:24,029 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 20:58:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:24,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 20:58:24,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:58:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-01 20:58:24,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:58:24,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965215590] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:58:24,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:58:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-04-01 20:58:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233692319] [2023-04-01 20:58:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:58:24,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:58:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:58:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:58:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:58:24,570 INFO L87 Difference]: Start difference. First operand 85343 states and 124682 transitions. Second operand has 3 states, 3 states have (on average 580.0) internal successors, (1740), 3 states have internal predecessors, (1740), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 20:58:29,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:58:29,975 INFO L93 Difference]: Finished difference Result 215077 states and 319375 transitions. [2023-04-01 20:58:29,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:58:29,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 580.0) internal successors, (1740), 3 states have internal predecessors, (1740), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1775 [2023-04-01 20:58:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:58:30,607 INFO L225 Difference]: With dead ends: 215077 [2023-04-01 20:58:30,608 INFO L226 Difference]: Without dead ends: 129740 [2023-04-01 20:58:30,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1788 GetRequests, 1784 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:58:30,683 INFO L413 NwaCegarLoop]: 3882 mSDtfsCounter, 1852 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 5783 mSolverCounterSat, 1200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 4287 SdHoareTripleChecker+Invalid, 6983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 5783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:58:30,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1852 Valid, 4287 Invalid, 6983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 5783 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-01 20:58:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129740 states. [2023-04-01 20:58:32,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129740 to 129727. [2023-04-01 20:58:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129727 states, 126338 states have (on average 1.1833969193750098) internal successors, (149508), 126770 states have internal predecessors, (149508), 570 states have call successors, (570), 570 states have call predecessors, (570), 2818 states have return successors, (32423), 2386 states have call predecessors, (32423), 569 states have call successors, (32423) [2023-04-01 20:58:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129727 states to 129727 states and 182501 transitions. [2023-04-01 20:58:33,411 INFO L78 Accepts]: Start accepts. Automaton has 129727 states and 182501 transitions. Word has length 1775 [2023-04-01 20:58:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:58:33,425 INFO L495 AbstractCegarLoop]: Abstraction has 129727 states and 182501 transitions. [2023-04-01 20:58:33,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 580.0) internal successors, (1740), 3 states have internal predecessors, (1740), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 20:58:33,427 INFO L276 IsEmpty]: Start isEmpty. Operand 129727 states and 182501 transitions. [2023-04-01 20:58:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1815 [2023-04-01 20:58:33,710 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:58:33,711 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:58:33,722 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 20:58:33,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:58:33,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:58:33,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:58:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1479926786, now seen corresponding path program 1 times [2023-04-01 20:58:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:58:33,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52524200] [2023-04-01 20:58:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:58:33,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:58:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:58:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:35,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:58:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:35,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 20:58:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:35,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-01 20:58:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-01 20:58:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 105 proven. 41 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-01 20:58:35,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:58:35,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52524200] [2023-04-01 20:58:35,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52524200] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:58:35,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137858435] [2023-04-01 20:58:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:58:35,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:58:35,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:58:35,602 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 20:58:35,604 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 20:58:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:36,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:58:36,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:58:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-04-01 20:58:36,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:58:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 106 proven. 43 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-01 20:58:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137858435] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:58:36,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:58:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:58:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425916024] [2023-04-01 20:58:36,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:58:36,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:58:36,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:58:36,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:58:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:58:36,425 INFO L87 Difference]: Start difference. First operand 129727 states and 182501 transitions. Second operand has 12 states, 12 states have (on average 155.0) internal successors, (1860), 10 states have internal predecessors, (1860), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:58:58,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:58:58,321 INFO L93 Difference]: Finished difference Result 304687 states and 469147 transitions. [2023-04-01 20:58:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-04-01 20:58:58,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 155.0) internal successors, (1860), 10 states have internal predecessors, (1860), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1814 [2023-04-01 20:58:58,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:58:58,831 INFO L225 Difference]: With dead ends: 304687 [2023-04-01 20:58:58,831 INFO L226 Difference]: Without dead ends: 174966 [2023-04-01 20:58:59,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3763 GetRequests, 3690 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=873, Invalid=4529, Unknown=0, NotChecked=0, Total=5402 [2023-04-01 20:58:59,054 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 22252 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 34213 mSolverCounterSat, 7352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22262 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 41565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7352 IncrementalHoareTripleChecker+Valid, 34213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:58:59,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22262 Valid, 2934 Invalid, 41565 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7352 Valid, 34213 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2023-04-01 20:58:59,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174966 states. [2023-04-01 20:59:01,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174966 to 171979. [2023-04-01 20:59:01,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171979 states, 166717 states have (on average 1.077142702903723) internal successors, (179578), 167506 states have internal predecessors, (179578), 746 states have call successors, (746), 746 states have call predecessors, (746), 4515 states have return successors, (27506), 3726 states have call predecessors, (27506), 745 states have call successors, (27506) [2023-04-01 20:59:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171979 states to 171979 states and 207830 transitions. [2023-04-01 20:59:02,344 INFO L78 Accepts]: Start accepts. Automaton has 171979 states and 207830 transitions. Word has length 1814 [2023-04-01 20:59:02,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:59:02,345 INFO L495 AbstractCegarLoop]: Abstraction has 171979 states and 207830 transitions. [2023-04-01 20:59:02,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.0) internal successors, (1860), 10 states have internal predecessors, (1860), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:59:02,345 INFO L276 IsEmpty]: Start isEmpty. Operand 171979 states and 207830 transitions. [2023-04-01 20:59:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1822 [2023-04-01 20:59:02,572 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:59:02,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:59:02,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 20:59:02,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:59:02,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:59:02,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:59:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1031826941, now seen corresponding path program 1 times [2023-04-01 20:59:02,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:59:02,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128845157] [2023-04-01 20:59:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:59:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:59:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:04,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:59:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:59:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:59:04,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:59:04,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128845157] [2023-04-01 20:59:04,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128845157] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:59:04,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:59:04,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:59:04,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731999157] [2023-04-01 20:59:04,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:59:04,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:59:04,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:59:04,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:59:04,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:59:04,541 INFO L87 Difference]: Start difference. First operand 171979 states and 207830 transitions. Second operand has 7 states, 6 states have (on average 301.3333333333333) internal successors, (1808), 4 states have internal predecessors, (1808), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:59:16,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:59:16,503 INFO L93 Difference]: Finished difference Result 482406 states and 598522 transitions. [2023-04-01 20:59:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:59:16,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 301.3333333333333) internal successors, (1808), 4 states have internal predecessors, (1808), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1821 [2023-04-01 20:59:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:59:17,732 INFO L225 Difference]: With dead ends: 482406 [2023-04-01 20:59:17,732 INFO L226 Difference]: Without dead ends: 310433 [2023-04-01 20:59:17,986 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 20:59:17,987 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 11303 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 12246 mSolverCounterSat, 3377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11303 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 15623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3377 IncrementalHoareTripleChecker+Valid, 12246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:59:17,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11303 Valid, 1018 Invalid, 15623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3377 Valid, 12246 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-04-01 20:59:18,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310433 states. [2023-04-01 20:59:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310433 to 277893. [2023-04-01 20:59:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277893 states, 271507 states have (on average 1.0622672711937446) internal successors, (288413), 272344 states have internal predecessors, (288413), 1234 states have call successors, (1234), 1234 states have call predecessors, (1234), 5151 states have return successors, (39378), 4314 states have call predecessors, (39378), 1233 states have call successors, (39378) [2023-04-01 20:59:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277893 states to 277893 states and 329025 transitions. [2023-04-01 20:59:24,195 INFO L78 Accepts]: Start accepts. Automaton has 277893 states and 329025 transitions. Word has length 1821 [2023-04-01 20:59:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:59:24,195 INFO L495 AbstractCegarLoop]: Abstraction has 277893 states and 329025 transitions. [2023-04-01 20:59:24,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 301.3333333333333) internal successors, (1808), 4 states have internal predecessors, (1808), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:59:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 277893 states and 329025 transitions. [2023-04-01 20:59:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1975 [2023-04-01 20:59:24,821 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:59:24,822 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:59:24,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 20:59:24,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:59:24,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:59:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1051892371, now seen corresponding path program 1 times [2023-04-01 20:59:24,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:59:24,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995033756] [2023-04-01 20:59:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:59:24,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:59:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:29,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:59:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:29,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:59:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:29,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 20:59:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:29,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 20:59:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 254 proven. 12 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-04-01 20:59:29,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:59:29,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995033756] [2023-04-01 20:59:29,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995033756] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:59:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674782786] [2023-04-01 20:59:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:59:29,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:59:29,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:59:29,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:59:29,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 20:59:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:59:30,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-01 20:59:30,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:59:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 297 proven. 106 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-04-01 20:59:32,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:59:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 401 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-04-01 20:59:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674782786] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:59:34,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:59:34,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-04-01 20:59:34,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852006814] [2023-04-01 20:59:34,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:59:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:59:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:59:34,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:59:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:59:34,185 INFO L87 Difference]: Start difference. First operand 277893 states and 329025 transitions. Second operand has 11 states, 11 states have (on average 339.09090909090907) internal successors, (3730), 9 states have internal predecessors, (3730), 4 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 20:59:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:59:57,706 INFO L93 Difference]: Finished difference Result 558030 states and 668813 transitions. [2023-04-01 20:59:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 20:59:57,707 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 339.09090909090907) internal successors, (3730), 9 states have internal predecessors, (3730), 4 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 1974 [2023-04-01 20:59:57,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:59:58,458 INFO L225 Difference]: With dead ends: 558030 [2023-04-01 20:59:58,458 INFO L226 Difference]: Without dead ends: 280143 [2023-04-01 20:59:58,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4001 GetRequests, 3966 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2023-04-01 20:59:58,811 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 15074 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 37561 mSolverCounterSat, 3614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15074 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 41175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3614 IncrementalHoareTripleChecker+Valid, 37561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:59:58,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15074 Valid, 1531 Invalid, 41175 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3614 Valid, 37561 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2023-04-01 20:59:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280143 states. [2023-04-01 21:00:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280143 to 274329. [2023-04-01 21:00:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274329 states, 268006 states have (on average 1.0412304202144729) internal successors, (279056), 268836 states have internal predecessors, (279056), 1218 states have call successors, (1218), 1218 states have call predecessors, (1218), 5104 states have return successors, (25513), 4274 states have call predecessors, (25513), 1217 states have call successors, (25513) [2023-04-01 21:00:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274329 states to 274329 states and 305787 transitions. [2023-04-01 21:00:03,523 INFO L78 Accepts]: Start accepts. Automaton has 274329 states and 305787 transitions. Word has length 1974 [2023-04-01 21:00:03,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:00:03,524 INFO L495 AbstractCegarLoop]: Abstraction has 274329 states and 305787 transitions. [2023-04-01 21:00:03,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 339.09090909090907) internal successors, (3730), 9 states have internal predecessors, (3730), 4 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 21:00:03,525 INFO L276 IsEmpty]: Start isEmpty. Operand 274329 states and 305787 transitions. [2023-04-01 21:00:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2551 [2023-04-01 21:00:04,192 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:00:04,193 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:00:04,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 21:00:04,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:00:04,401 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:00:04,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:00:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash 777365125, now seen corresponding path program 1 times [2023-04-01 21:00:04,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:00:04,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399448120] [2023-04-01 21:00:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:00:04,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:00:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:06,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:00:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:06,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:00:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 21:00:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 21:00:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-04-01 21:00:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2023-04-01 21:00:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:06,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-04-01 21:00:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:00:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 839 [2023-04-01 21:00:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2063 backedges. 1175 proven. 121 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2023-04-01 21:00:06,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:00:06,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399448120] [2023-04-01 21:00:06,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399448120] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:00:06,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147477109] [2023-04-01 21:00:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:00:07,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:00:07,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:00:07,001 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:00:07,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 21:00:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:07,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 3329 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:00:07,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:00:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2063 backedges. 1356 proven. 2 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2023-04-01 21:00:07,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:00:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2063 backedges. 1172 proven. 111 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-04-01 21:00:08,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147477109] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:00:08,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:00:08,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-04-01 21:00:08,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794881192] [2023-04-01 21:00:08,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:00:08,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 21:00:08,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:00:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 21:00:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:00:08,241 INFO L87 Difference]: Start difference. First operand 274329 states and 305787 transitions. Second operand has 12 states, 12 states have (on average 196.25) internal successors, (2355), 10 states have internal predecessors, (2355), 5 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 21:00:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:00:35,503 INFO L93 Difference]: Finished difference Result 558321 states and 631749 transitions. [2023-04-01 21:00:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-04-01 21:00:35,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 196.25) internal successors, (2355), 10 states have internal predecessors, (2355), 5 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 2550 [2023-04-01 21:00:35,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:00:36,642 INFO L225 Difference]: With dead ends: 558321 [2023-04-01 21:00:36,642 INFO L226 Difference]: Without dead ends: 283998 [2023-04-01 21:00:36,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5186 GetRequests, 5141 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=413, Invalid=1567, Unknown=0, NotChecked=0, Total=1980 [2023-04-01 21:00:36,907 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 18214 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 44405 mSolverCounterSat, 5993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18223 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 50398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5993 IncrementalHoareTripleChecker+Valid, 44405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2023-04-01 21:00:36,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18223 Valid, 2779 Invalid, 50398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5993 Valid, 44405 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2023-04-01 21:00:37,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283998 states. [2023-04-01 21:00:41,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283998 to 278590. [2023-04-01 21:00:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278590 states, 271943 states have (on average 1.0268328289384172) internal successors, (279240), 272833 states have internal predecessors, (279240), 1235 states have call successors, (1235), 1234 states have call predecessors, (1235), 5411 states have return successors, (19066), 4522 states have call predecessors, (19066), 1234 states have call successors, (19066) [2023-04-01 21:00:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278590 states to 278590 states and 299541 transitions. [2023-04-01 21:00:41,964 INFO L78 Accepts]: Start accepts. Automaton has 278590 states and 299541 transitions. Word has length 2550 [2023-04-01 21:00:41,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:00:41,965 INFO L495 AbstractCegarLoop]: Abstraction has 278590 states and 299541 transitions. [2023-04-01 21:00:41,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 196.25) internal successors, (2355), 10 states have internal predecessors, (2355), 5 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 21:00:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 278590 states and 299541 transitions. [2023-04-01 21:00:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2607 [2023-04-01 21:00:42,370 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:00:42,371 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:00:42,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 21:00:42,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:00:42,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:00:42,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:00:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1503014007, now seen corresponding path program 1 times [2023-04-01 21:00:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:00:42,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51867362] [2023-04-01 21:00:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:00:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:00:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:00:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:00:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:47,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:00:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:00:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:48,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2023-04-01 21:00:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:48,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:00:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:48,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 895 [2023-04-01 21:00:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 875 proven. 321 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 21:00:48,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:00:48,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51867362] [2023-04-01 21:00:48,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51867362] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:00:48,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023442453] [2023-04-01 21:00:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:00:48,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:00:48,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:00:48,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:00:48,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 21:00:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:00:49,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 3217 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 21:00:49,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:00:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 881 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-04-01 21:00:51,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:00:51,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023442453] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:00:51,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:00:51,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 21:00:51,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400435739] [2023-04-01 21:00:51,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:00:51,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:00:51,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:00:51,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:00:51,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:00:51,130 INFO L87 Difference]: Start difference. First operand 278590 states and 299541 transitions. Second operand has 3 states, 3 states have (on average 753.6666666666666) internal successors, (2261), 3 states have internal predecessors, (2261), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 21:00:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:00:58,729 INFO L93 Difference]: Finished difference Result 630165 states and 678319 transitions. [2023-04-01 21:00:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:00:58,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 753.6666666666666) internal successors, (2261), 3 states have internal predecessors, (2261), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 2606 [2023-04-01 21:00:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted.