/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem04_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:34:59,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:34:59,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:34:59,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:34:59,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:34:59,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:34:59,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:34:59,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:34:59,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:34:59,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:34:59,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:34:59,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:34:59,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:34:59,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:34:59,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:34:59,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:34:59,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 20:34:59,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:34:59,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:34:59,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:34:59,594 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 20:34:59,617 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:34:59,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:34:59,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:34:59,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:34:59,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:34:59,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:34:59,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:34:59,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:34:59,619 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:34:59,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:34:59,620 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:34:59,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:34:59,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:34:59,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:34:59,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:34:59,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:34:59,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:34:59,621 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:34:59,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:34:59,621 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:34:59,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:34:59,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:34:59,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:34:59,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:34:59,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:34:59,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:34:59,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:34:59,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:34:59,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:34:59,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:34:59,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:34:59,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:34:59,622 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:34:59,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:34:59,622 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:34:59,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:34:59,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:34:59,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:34:59,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:34:59,835 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:34:59,835 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:34:59,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label01.c [2023-04-01 20:35:00,963 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:35:01,356 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:35:01,357 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label01.c [2023-04-01 20:35:01,380 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be2e8035/8e8039994aa64fe190608f3fd9ca654a/FLAGc89b6ce0a [2023-04-01 20:35:01,394 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be2e8035/8e8039994aa64fe190608f3fd9ca654a [2023-04-01 20:35:01,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:35:01,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:35:01,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:35:01,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:35:01,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:35:01,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:35:01" (1/1) ... [2023-04-01 20:35:01,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b3055a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:01, skipping insertion in model container [2023-04-01 20:35:01,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:35:01" (1/1) ... [2023-04-01 20:35:01,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:35:01,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:35:02,293 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label01.c[183596,183609] [2023-04-01 20:35:02,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:35:02,310 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:35:02,595 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label01.c[183596,183609] [2023-04-01 20:35:02,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:35:02,618 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:35:02,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02 WrapperNode [2023-04-01 20:35:02,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:35:02,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:35:02,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:35:02,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:35:02,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02" (1/1) ... [2023-04-01 20:35:02,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02" (1/1) ... [2023-04-01 20:35:02,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02" (1/1) ... [2023-04-01 20:35:02,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02" (1/1) ... [2023-04-01 20:35:02,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02" (1/1) ... [2023-04-01 20:35:02,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02" (1/1) ... [2023-04-01 20:35:02,770 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02" (1/1) ... [2023-04-01 20:35:02,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02" (1/1) ... [2023-04-01 20:35:02,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:35:02,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:35:02,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:35:02,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:35:02,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02" (1/1) ... [2023-04-01 20:35:02,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:35:02,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:35:02,887 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 20:35:02,916 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 20:35:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:35:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:35:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:35:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:35:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:35:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:35:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:35:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:35:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:35:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:35:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:35:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:35:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:35:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:35:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:35:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:35:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:35:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:35:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:35:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:35:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:35:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:35:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:35:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:35:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:35:03,035 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:35:03,037 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:35:05,808 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:35:05,823 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:35:05,823 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:35:05,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:35:05 BoogieIcfgContainer [2023-04-01 20:35:05,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:35:05,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:35:05,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:35:05,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:35:05,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:35:01" (1/3) ... [2023-04-01 20:35:05,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713346e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:35:05, skipping insertion in model container [2023-04-01 20:35:05,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:02" (2/3) ... [2023-04-01 20:35:05,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713346e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:35:05, skipping insertion in model container [2023-04-01 20:35:05,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:35:05" (3/3) ... [2023-04-01 20:35:05,832 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label01.c [2023-04-01 20:35:05,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:35:05,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:35:05,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:35:05,904 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;@53ee9b6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:35:05,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:35:05,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 20:35:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2023-04-01 20:35:05,990 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:05,991 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] [2023-04-01 20:35:05,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:06,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:06,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1593824299, now seen corresponding path program 1 times [2023-04-01 20:35:06,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:06,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825550548] [2023-04-01 20:35:06,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:06,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:09,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:09,022 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 20:35:09,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:09,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825550548] [2023-04-01 20:35:09,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825550548] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:35:09,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:35:09,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:35:09,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977582022] [2023-04-01 20:35:09,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:35:09,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:35:09,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:09,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:35:09,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:35:09,055 INFO L87 Difference]: Start difference. First operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 203.5) internal successors, (814), 3 states have internal predecessors, (814), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:35:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:13,831 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2023-04-01 20:35:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 20:35:13,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 203.5) internal successors, (814), 3 states have internal predecessors, (814), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 821 [2023-04-01 20:35:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:13,855 INFO L225 Difference]: With dead ends: 2672 [2023-04-01 20:35:13,855 INFO L226 Difference]: Without dead ends: 1702 [2023-04-01 20:35:13,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:35:13,865 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2683 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5342 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 5342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:13,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2683 Valid, 62 Invalid, 5853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 5342 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 20:35:13,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-04-01 20:35:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2023-04-01 20:35:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1664 states have (on average 1.7866586538461537) internal successors, (2973), 1666 states have internal predecessors, (2973), 10 states have call successors, (10), 10 states have call predecessors, (10), 14 states have return successors, (22), 12 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 20:35:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3005 transitions. [2023-04-01 20:35:13,969 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3005 transitions. Word has length 821 [2023-04-01 20:35:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:13,971 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 3005 transitions. [2023-04-01 20:35:13,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 203.5) internal successors, (814), 3 states have internal predecessors, (814), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:35:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3005 transitions. [2023-04-01 20:35:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2023-04-01 20:35:13,989 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:13,990 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:35:13,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:35:13,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:13,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:13,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1334797321, now seen corresponding path program 1 times [2023-04-01 20:35:13,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:13,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196949468] [2023-04-01 20:35:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:16,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:35:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:35:16,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:16,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196949468] [2023-04-01 20:35:16,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196949468] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:35:16,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:35:16,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:35:16,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924650] [2023-04-01 20:35:16,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:35:16,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:35:16,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:35:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:35:16,232 INFO L87 Difference]: Start difference. First operand 1689 states and 3005 transitions. Second operand has 8 states, 7 states have (on average 117.14285714285714) internal successors, (820), 5 states have internal predecessors, (820), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:35:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:21,713 INFO L93 Difference]: Finished difference Result 5176 states and 9249 transitions. [2023-04-01 20:35:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:35:21,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 117.14285714285714) internal successors, (820), 5 states have internal predecessors, (820), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 829 [2023-04-01 20:35:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:21,726 INFO L225 Difference]: With dead ends: 5176 [2023-04-01 20:35:21,727 INFO L226 Difference]: Without dead ends: 3493 [2023-04-01 20:35:21,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:35:21,746 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 2760 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 7036 mSolverCounterSat, 1742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 8778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1742 IncrementalHoareTripleChecker+Valid, 7036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:21,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2760 Valid, 180 Invalid, 8778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1742 Valid, 7036 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 20:35:21,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2023-04-01 20:35:21,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 3437. [2023-04-01 20:35:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 3367 states have (on average 1.5565785565785566) internal successors, (5241), 3376 states have internal predecessors, (5241), 18 states have call successors, (18), 18 states have call predecessors, (18), 51 states have return successors, (120), 42 states have call predecessors, (120), 17 states have call successors, (120) [2023-04-01 20:35:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5379 transitions. [2023-04-01 20:35:21,850 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5379 transitions. Word has length 829 [2023-04-01 20:35:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:21,850 INFO L495 AbstractCegarLoop]: Abstraction has 3437 states and 5379 transitions. [2023-04-01 20:35:21,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 117.14285714285714) internal successors, (820), 5 states have internal predecessors, (820), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:35:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5379 transitions. [2023-04-01 20:35:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2023-04-01 20:35:21,868 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:21,869 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:35:21,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:35:21,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:21,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:21,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1420191661, now seen corresponding path program 1 times [2023-04-01 20:35:21,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:21,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767994250] [2023-04-01 20:35:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:21,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:23,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:35:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:35:23,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767994250] [2023-04-01 20:35:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767994250] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:35:23,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:35:23,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:35:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164432273] [2023-04-01 20:35:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:35:23,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:35:23,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:23,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:35:23,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:35:23,386 INFO L87 Difference]: Start difference. First operand 3437 states and 5379 transitions. Second operand has 7 states, 6 states have (on average 137.5) internal successors, (825), 4 states have internal predecessors, (825), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:35:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:28,052 INFO L93 Difference]: Finished difference Result 10440 states and 16772 transitions. [2023-04-01 20:35:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 20:35:28,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 137.5) internal successors, (825), 4 states have internal predecessors, (825), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 834 [2023-04-01 20:35:28,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:28,075 INFO L225 Difference]: With dead ends: 10440 [2023-04-01 20:35:28,075 INFO L226 Difference]: Without dead ends: 7009 [2023-04-01 20:35:28,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:35:28,082 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6140 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4698 mSolverCounterSat, 1543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6140 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 6241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1543 IncrementalHoareTripleChecker+Valid, 4698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:28,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6140 Valid, 106 Invalid, 6241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1543 Valid, 4698 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 20:35:28,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7009 states. [2023-04-01 20:35:28,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7009 to 6925. [2023-04-01 20:35:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6925 states, 6766 states have (on average 1.4945314809340822) internal successors, (10112), 6794 states have internal predecessors, (10112), 34 states have call successors, (34), 34 states have call predecessors, (34), 124 states have return successors, (480), 96 states have call predecessors, (480), 33 states have call successors, (480) [2023-04-01 20:35:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6925 states to 6925 states and 10626 transitions. [2023-04-01 20:35:28,258 INFO L78 Accepts]: Start accepts. Automaton has 6925 states and 10626 transitions. Word has length 834 [2023-04-01 20:35:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:28,259 INFO L495 AbstractCegarLoop]: Abstraction has 6925 states and 10626 transitions. [2023-04-01 20:35:28,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 137.5) internal successors, (825), 4 states have internal predecessors, (825), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:35:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6925 states and 10626 transitions. [2023-04-01 20:35:28,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2023-04-01 20:35:28,277 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:28,277 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-04-01 20:35:28,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:35:28,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:28,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1551907241, now seen corresponding path program 1 times [2023-04-01 20:35:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:28,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345201270] [2023-04-01 20:35:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:28,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:29,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:35:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-01 20:35:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:35:29,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:29,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345201270] [2023-04-01 20:35:29,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345201270] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:35:29,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854332963] [2023-04-01 20:35:29,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:29,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:35:29,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:35:29,246 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 20:35:29,300 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 20:35:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:29,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:35:29,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:35:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 20:35:29,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:35:29,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854332963] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:35:29,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:35:29,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 20:35:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323535111] [2023-04-01 20:35:29,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:35:29,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:35:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:29,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:35:29,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:35:29,679 INFO L87 Difference]: Start difference. First operand 6925 states and 10626 transitions. Second operand has 5 states, 5 states have (on average 164.6) internal successors, (823), 4 states have internal predecessors, (823), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:35:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:33,137 INFO L93 Difference]: Finished difference Result 17353 states and 27177 transitions. [2023-04-01 20:35:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 20:35:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 164.6) internal successors, (823), 4 states have internal predecessors, (823), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 838 [2023-04-01 20:35:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:33,174 INFO L225 Difference]: With dead ends: 17353 [2023-04-01 20:35:33,174 INFO L226 Difference]: Without dead ends: 10434 [2023-04-01 20:35:33,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:35:33,192 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2872 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4121 mSolverCounterSat, 1810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2872 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 5931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1810 IncrementalHoareTripleChecker+Valid, 4121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:33,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2872 Valid, 105 Invalid, 5931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1810 Valid, 4121 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 20:35:33,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2023-04-01 20:35:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 10372. [2023-04-01 20:35:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10372 states, 10138 states have (on average 1.381534819491024) internal successors, (14006), 10184 states have internal predecessors, (14006), 50 states have call successors, (50), 50 states have call predecessors, (50), 183 states have return successors, (875), 137 states have call predecessors, (875), 49 states have call successors, (875) [2023-04-01 20:35:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10372 states to 10372 states and 14931 transitions. [2023-04-01 20:35:33,553 INFO L78 Accepts]: Start accepts. Automaton has 10372 states and 14931 transitions. Word has length 838 [2023-04-01 20:35:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:33,553 INFO L495 AbstractCegarLoop]: Abstraction has 10372 states and 14931 transitions. [2023-04-01 20:35:33,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.6) internal successors, (823), 4 states have internal predecessors, (823), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:35:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 10372 states and 14931 transitions. [2023-04-01 20:35:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2023-04-01 20:35:33,577 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:33,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:35:33,587 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 20:35:33,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:35:33,788 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:33,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:33,791 INFO L85 PathProgramCache]: Analyzing trace with hash 612820699, now seen corresponding path program 1 times [2023-04-01 20:35:33,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:33,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632878209] [2023-04-01 20:35:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:33,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:35:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:35:35,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:35,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632878209] [2023-04-01 20:35:35,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632878209] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:35:35,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:35:35,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:35:35,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092536528] [2023-04-01 20:35:35,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:35:35,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:35:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:35:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:35:35,272 INFO L87 Difference]: Start difference. First operand 10372 states and 14931 transitions. Second operand has 8 states, 7 states have (on average 118.42857142857143) internal successors, (829), 5 states have internal predecessors, (829), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:35:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:40,570 INFO L93 Difference]: Finished difference Result 22744 states and 33488 transitions. [2023-04-01 20:35:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:35:40,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 118.42857142857143) internal successors, (829), 5 states have internal predecessors, (829), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 838 [2023-04-01 20:35:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:40,606 INFO L225 Difference]: With dead ends: 22744 [2023-04-01 20:35:40,606 INFO L226 Difference]: Without dead ends: 12378 [2023-04-01 20:35:40,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:35:40,621 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 5981 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6323 mSolverCounterSat, 1428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5981 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1428 IncrementalHoareTripleChecker+Valid, 6323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:40,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5981 Valid, 174 Invalid, 7751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1428 Valid, 6323 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-01 20:35:40,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12378 states. [2023-04-01 20:35:40,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12378 to 12334. [2023-04-01 20:35:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12334 states, 11973 states have (on average 1.3567192850580472) internal successors, (16244), 12058 states have internal predecessors, (16244), 58 states have call successors, (58), 58 states have call predecessors, (58), 302 states have return successors, (1496), 217 states have call predecessors, (1496), 57 states have call successors, (1496) [2023-04-01 20:35:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12334 states to 12334 states and 17798 transitions. [2023-04-01 20:35:40,832 INFO L78 Accepts]: Start accepts. Automaton has 12334 states and 17798 transitions. Word has length 838 [2023-04-01 20:35:40,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:40,832 INFO L495 AbstractCegarLoop]: Abstraction has 12334 states and 17798 transitions. [2023-04-01 20:35:40,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 118.42857142857143) internal successors, (829), 5 states have internal predecessors, (829), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:35:40,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12334 states and 17798 transitions. [2023-04-01 20:35:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2023-04-01 20:35:40,857 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:40,858 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:35:40,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 20:35:40,858 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:40,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1898167115, now seen corresponding path program 1 times [2023-04-01 20:35:40,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:40,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417350022] [2023-04-01 20:35:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:40,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:45,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:45,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:35:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:45,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:35:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:35:46,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:46,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417350022] [2023-04-01 20:35:46,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417350022] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:35:46,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492816218] [2023-04-01 20:35:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:46,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:35:46,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:35:46,004 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 20:35:46,074 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 20:35:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:46,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:35:46,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:35:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:35:47,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:35:47,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492816218] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:35:47,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:35:47,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-01 20:35:47,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188932858] [2023-04-01 20:35:47,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:35:47,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:35:47,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:47,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:35:47,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:35:47,279 INFO L87 Difference]: Start difference. First operand 12334 states and 17798 transitions. Second operand has 3 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 20:35:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:49,884 INFO L93 Difference]: Finished difference Result 34875 states and 51570 transitions. [2023-04-01 20:35:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:35:49,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 855 [2023-04-01 20:35:49,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:49,963 INFO L225 Difference]: With dead ends: 34875 [2023-04-01 20:35:49,964 INFO L226 Difference]: Without dead ends: 22547 [2023-04-01 20:35:49,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:35:49,997 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 45 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 3337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:49,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1370 Invalid, 3337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 20:35:50,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22547 states. [2023-04-01 20:35:50,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22547 to 22545. [2023-04-01 20:35:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22545 states, 22008 states have (on average 1.311023264267539) internal successors, (28853), 22130 states have internal predecessors, (28853), 106 states have call successors, (106), 106 states have call predecessors, (106), 430 states have return successors, (3292), 308 states have call predecessors, (3292), 105 states have call successors, (3292) [2023-04-01 20:35:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22545 states to 22545 states and 32251 transitions. [2023-04-01 20:35:50,414 INFO L78 Accepts]: Start accepts. Automaton has 22545 states and 32251 transitions. Word has length 855 [2023-04-01 20:35:50,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:50,416 INFO L495 AbstractCegarLoop]: Abstraction has 22545 states and 32251 transitions. [2023-04-01 20:35:50,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 20:35:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 22545 states and 32251 transitions. [2023-04-01 20:35:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2023-04-01 20:35:50,466 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:50,467 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:35:50,474 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 20:35:50,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 20:35:50,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:50,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:50,675 INFO L85 PathProgramCache]: Analyzing trace with hash -317637747, now seen corresponding path program 1 times [2023-04-01 20:35:50,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:50,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462204213] [2023-04-01 20:35:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:50,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:51,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:51,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:35:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:51,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:35:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 20:35:51,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:51,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462204213] [2023-04-01 20:35:51,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462204213] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:35:51,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110734785] [2023-04-01 20:35:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:51,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:35:51,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:35:51,848 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 20:35:51,850 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 20:35:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:52,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:35:52,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:35:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:35:52,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:35:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:35:52,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110734785] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:35:52,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:35:52,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:35:52,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828107561] [2023-04-01 20:35:52,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:35:52,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:35:52,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:52,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:35:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:35:52,576 INFO L87 Difference]: Start difference. First operand 22545 states and 32251 transitions. Second operand has 13 states, 13 states have (on average 82.15384615384616) internal successors, (1068), 11 states have internal predecessors, (1068), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:35:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:58,841 INFO L93 Difference]: Finished difference Result 65657 states and 100759 transitions. [2023-04-01 20:35:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 20:35:58,842 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 82.15384615384616) internal successors, (1068), 11 states have internal predecessors, (1068), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 920 [2023-04-01 20:35:58,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:58,970 INFO L225 Difference]: With dead ends: 65657 [2023-04-01 20:35:58,970 INFO L226 Difference]: Without dead ends: 43118 [2023-04-01 20:35:59,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1866 GetRequests, 1844 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-01 20:35:59,011 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8432 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 8016 mSolverCounterSat, 1583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8432 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 9599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1583 IncrementalHoareTripleChecker+Valid, 8016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:59,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8432 Valid, 177 Invalid, 9599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1583 Valid, 8016 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-01 20:35:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43118 states. [2023-04-01 20:35:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43118 to 42923. [2023-04-01 20:35:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42923 states, 42053 states have (on average 1.2390792571279101) internal successors, (52107), 42236 states have internal predecessors, (52107), 202 states have call successors, (202), 202 states have call predecessors, (202), 667 states have return successors, (7007), 484 states have call predecessors, (7007), 201 states have call successors, (7007) [2023-04-01 20:35:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42923 states to 42923 states and 59316 transitions. [2023-04-01 20:35:59,886 INFO L78 Accepts]: Start accepts. Automaton has 42923 states and 59316 transitions. Word has length 920 [2023-04-01 20:35:59,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:59,886 INFO L495 AbstractCegarLoop]: Abstraction has 42923 states and 59316 transitions. [2023-04-01 20:35:59,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 82.15384615384616) internal successors, (1068), 11 states have internal predecessors, (1068), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:35:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 42923 states and 59316 transitions. [2023-04-01 20:35:59,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2023-04-01 20:35:59,973 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:59,973 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:35:59,993 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 20:36:00,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:00,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:36:00,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:36:00,181 INFO L85 PathProgramCache]: Analyzing trace with hash 627696367, now seen corresponding path program 1 times [2023-04-01 20:36:00,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:36:00,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808222181] [2023-04-01 20:36:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:36:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:01,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:36:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:36:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-01 20:36:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:01,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-04-01 20:36:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:01,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-04-01 20:36:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 288 proven. 100 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-04-01 20:36:01,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808222181] [2023-04-01 20:36:01,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808222181] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:36:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072953332] [2023-04-01 20:36:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:01,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:01,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:36:01,735 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 20:36:01,779 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 20:36:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:02,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:36:02,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:36:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 344 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-01 20:36:02,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:36:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 293 proven. 99 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-04-01 20:36:02,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072953332] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:36:02,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:36:02,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-04-01 20:36:02,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990667210] [2023-04-01 20:36:02,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:36:02,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:36:02,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:02,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:36:02,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:36:02,581 INFO L87 Difference]: Start difference. First operand 42923 states and 59316 transitions. Second operand has 12 states, 12 states have (on average 105.16666666666667) internal successors, (1262), 10 states have internal predecessors, (1262), 4 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 20:36:13,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:36:13,118 INFO L93 Difference]: Finished difference Result 117446 states and 169417 transitions. [2023-04-01 20:36:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-01 20:36:13,122 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 105.16666666666667) internal successors, (1262), 10 states have internal predecessors, (1262), 4 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1078 [2023-04-01 20:36:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:36:13,317 INFO L225 Difference]: With dead ends: 117446 [2023-04-01 20:36:13,318 INFO L226 Difference]: Without dead ends: 74529 [2023-04-01 20:36:13,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2248 GetRequests, 2199 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=466, Invalid=1886, Unknown=0, NotChecked=0, Total=2352 [2023-04-01 20:36:13,366 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 9806 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 13089 mSolverCounterSat, 5713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9821 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 18802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5713 IncrementalHoareTripleChecker+Valid, 13089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:36:13,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9821 Valid, 322 Invalid, 18802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5713 Valid, 13089 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-04-01 20:36:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74529 states. [2023-04-01 20:36:14,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74529 to 73378. [2023-04-01 20:36:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73378 states, 72053 states have (on average 1.1277393030130598) internal successors, (81257), 72306 states have internal predecessors, (81257), 346 states have call successors, (346), 346 states have call predecessors, (346), 978 states have return successors, (8001), 725 states have call predecessors, (8001), 345 states have call successors, (8001) [2023-04-01 20:36:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73378 states to 73378 states and 89604 transitions. [2023-04-01 20:36:14,685 INFO L78 Accepts]: Start accepts. Automaton has 73378 states and 89604 transitions. Word has length 1078 [2023-04-01 20:36:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:36:14,685 INFO L495 AbstractCegarLoop]: Abstraction has 73378 states and 89604 transitions. [2023-04-01 20:36:14,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 105.16666666666667) internal successors, (1262), 10 states have internal predecessors, (1262), 4 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 20:36:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 73378 states and 89604 transitions. [2023-04-01 20:36:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1186 [2023-04-01 20:36:15,053 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:36:15,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:36:15,061 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 20:36:15,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:15,258 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:36:15,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:36:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1139444283, now seen corresponding path program 1 times [2023-04-01 20:36:15,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:36:15,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795030461] [2023-04-01 20:36:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:15,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:36:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:16,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:36:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:16,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:36:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:16,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:36:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 487 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-01 20:36:16,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:16,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795030461] [2023-04-01 20:36:16,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795030461] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:36:16,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097124329] [2023-04-01 20:36:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:16,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:16,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:36:16,888 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 20:36:16,890 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 20:36:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:17,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 1644 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:36:17,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:36:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 20:36:17,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:36:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 20:36:18,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097124329] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:36:18,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:36:18,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:36:18,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142132782] [2023-04-01 20:36:18,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:36:18,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:36:18,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:18,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:36:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:36:18,025 INFO L87 Difference]: Start difference. First operand 73378 states and 89604 transitions. Second operand has 11 states, 11 states have (on average 145.1818181818182) internal successors, (1597), 9 states have internal predecessors, (1597), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:36:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:36:27,985 INFO L93 Difference]: Finished difference Result 186308 states and 239340 transitions. [2023-04-01 20:36:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-01 20:36:27,986 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 145.1818181818182) internal successors, (1597), 9 states have internal predecessors, (1597), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 1185 [2023-04-01 20:36:27,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:36:28,349 INFO L225 Difference]: With dead ends: 186308 [2023-04-01 20:36:28,349 INFO L226 Difference]: Without dead ends: 112936 [2023-04-01 20:36:28,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2433 GetRequests, 2395 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 20:36:28,416 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 7324 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 11840 mSolverCounterSat, 2711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7332 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 14551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2711 IncrementalHoareTripleChecker+Valid, 11840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:36:28,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7332 Valid, 404 Invalid, 14551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2711 Valid, 11840 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-01 20:36:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112936 states. [2023-04-01 20:36:29,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112936 to 92773. [2023-04-01 20:36:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92773 states, 91186 states have (on average 1.0779286293948633) internal successors, (98292), 91460 states have internal predecessors, (98292), 438 states have call successors, (438), 438 states have call predecessors, (438), 1148 states have return successors, (6954), 874 states have call predecessors, (6954), 437 states have call successors, (6954) [2023-04-01 20:36:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92773 states to 92773 states and 105684 transitions. [2023-04-01 20:36:30,045 INFO L78 Accepts]: Start accepts. Automaton has 92773 states and 105684 transitions. Word has length 1185 [2023-04-01 20:36:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:36:30,046 INFO L495 AbstractCegarLoop]: Abstraction has 92773 states and 105684 transitions. [2023-04-01 20:36:30,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.1818181818182) internal successors, (1597), 9 states have internal predecessors, (1597), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:36:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 92773 states and 105684 transitions. [2023-04-01 20:36:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1890 [2023-04-01 20:36:30,166 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:36:30,167 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:36:30,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 20:36:30,374 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 20:36:30,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:36:30,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:36:30,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1085570487, now seen corresponding path program 1 times [2023-04-01 20:36:30,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:36:30,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198943446] [2023-04-01 20:36:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:30,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:36:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:36:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:36:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:36:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2023-04-01 20:36:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:33,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 1052 proven. 7 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2023-04-01 20:36:33,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:33,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198943446] [2023-04-01 20:36:33,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198943446] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:36:33,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024264255] [2023-04-01 20:36:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:33,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:33,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:36:33,233 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:36:33,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 20:36:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:33,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:36:33,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:36:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 1059 proven. 0 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2023-04-01 20:36:34,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:36:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024264255] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:36:34,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:36:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 20:36:34,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982030944] [2023-04-01 20:36:34,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:36:34,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:36:34,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:36:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:36:34,454 INFO L87 Difference]: Start difference. First operand 92773 states and 105684 transitions. Second operand has 3 states, 3 states have (on average 482.6666666666667) internal successors, (1448), 3 states have internal predecessors, (1448), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 20:36:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:36:36,940 INFO L93 Difference]: Finished difference Result 185540 states and 211401 transitions. [2023-04-01 20:36:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:36:36,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 482.6666666666667) internal successors, (1448), 3 states have internal predecessors, (1448), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 1889 [2023-04-01 20:36:36,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:36:37,130 INFO L225 Difference]: With dead ends: 185540 [2023-04-01 20:36:37,131 INFO L226 Difference]: Without dead ends: 92773 [2023-04-01 20:36:37,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1914 GetRequests, 1910 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:36:37,205 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 145 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:36:37,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1198 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 20:36:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92773 states. [2023-04-01 20:36:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92773 to 91939. [2023-04-01 20:36:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91939 states, 90360 states have (on average 1.056850376272687) internal successors, (95497), 90634 states have internal predecessors, (95497), 434 states have call successors, (434), 434 states have call predecessors, (434), 1144 states have return successors, (5306), 870 states have call predecessors, (5306), 433 states have call successors, (5306) [2023-04-01 20:36:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91939 states to 91939 states and 101237 transitions. [2023-04-01 20:36:38,562 INFO L78 Accepts]: Start accepts. Automaton has 91939 states and 101237 transitions. Word has length 1889 [2023-04-01 20:36:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:36:38,563 INFO L495 AbstractCegarLoop]: Abstraction has 91939 states and 101237 transitions. [2023-04-01 20:36:38,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 482.6666666666667) internal successors, (1448), 3 states have internal predecessors, (1448), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 20:36:38,564 INFO L276 IsEmpty]: Start isEmpty. Operand 91939 states and 101237 transitions. [2023-04-01 20:36:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4215 [2023-04-01 20:36:39,178 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:36:39,179 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:36:39,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 20:36:39,386 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 20:36:39,387 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:36:39,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:36:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1888679017, now seen corresponding path program 1 times [2023-04-01 20:36:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:36:39,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696328842] [2023-04-01 20:36:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:36:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:36:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:36:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:36:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-04-01 20:36:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 20:36:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-04-01 20:36:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2023-04-01 20:36:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2023-04-01 20:36:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-04-01 20:36:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1086 [2023-04-01 20:36:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1709 [2023-04-01 20:36:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1950 [2023-04-01 20:36:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2057 [2023-04-01 20:36:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2315 [2023-04-01 20:36:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2853 [2023-04-01 20:36:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2896 [2023-04-01 20:36:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:36:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16006 backedges. 3485 proven. 571 refuted. 0 times theorem prover too weak. 11950 trivial. 0 not checked. [2023-04-01 20:36:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696328842] [2023-04-01 20:36:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696328842] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:36:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796604912] [2023-04-01 20:36:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:45,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:45,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:36:45,718 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:36:45,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 20:36:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:46,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 5647 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:36:46,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:36:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16006 backedges. 2461 proven. 2 refuted. 0 times theorem prover too weak. 13543 trivial. 0 not checked. [2023-04-01 20:36:47,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:36:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16006 backedges. 3490 proven. 578 refuted. 0 times theorem prover too weak. 11938 trivial. 0 not checked. [2023-04-01 20:36:47,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796604912] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:36:47,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:36:47,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-04-01 20:36:47,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885725203] [2023-04-01 20:36:47,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:36:47,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:36:47,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:36:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:36:47,278 INFO L87 Difference]: Start difference. First operand 91939 states and 101237 transitions. Second operand has 12 states, 12 states have (on average 133.91666666666666) internal successors, (1607), 10 states have internal predecessors, (1607), 5 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-01 20:37:00,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:00,920 INFO L93 Difference]: Finished difference Result 221908 states and 247314 transitions. [2023-04-01 20:37:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 20:37:00,921 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 133.91666666666666) internal successors, (1607), 10 states have internal predecessors, (1607), 5 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 4214 [2023-04-01 20:37:00,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:01,241 INFO L225 Difference]: With dead ends: 221908 [2023-04-01 20:37:01,242 INFO L226 Difference]: Without dead ends: 129141 [2023-04-01 20:37:01,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8534 GetRequests, 8497 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 20:37:01,322 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 10758 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 20346 mSolverCounterSat, 4352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10770 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 24698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4352 IncrementalHoareTripleChecker+Valid, 20346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:01,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10770 Valid, 282 Invalid, 24698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4352 Valid, 20346 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-04-01 20:37:01,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129141 states. [2023-04-01 20:37:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129141 to 113913. [2023-04-01 20:37:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113913 states, 111765 states have (on average 1.0414530488077662) internal successors, (116398), 112136 states have internal predecessors, (116398), 648 states have call successors, (648), 534 states have call predecessors, (648), 1499 states have return successors, (7057), 1242 states have call predecessors, (7057), 647 states have call successors, (7057) [2023-04-01 20:37:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113913 states to 113913 states and 124103 transitions. [2023-04-01 20:37:03,447 INFO L78 Accepts]: Start accepts. Automaton has 113913 states and 124103 transitions. Word has length 4214 [2023-04-01 20:37:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:03,447 INFO L495 AbstractCegarLoop]: Abstraction has 113913 states and 124103 transitions. [2023-04-01 20:37:03,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 133.91666666666666) internal successors, (1607), 10 states have internal predecessors, (1607), 5 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-01 20:37:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand 113913 states and 124103 transitions. [2023-04-01 20:37:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4788 [2023-04-01 20:37:03,931 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:03,932 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:37:03,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 20:37:04,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:04,144 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:04,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash -478446583, now seen corresponding path program 1 times [2023-04-01 20:37:04,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:04,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387555342] [2023-04-01 20:37:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:04,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-01 20:37:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-04-01 20:37:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2023-04-01 20:37:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-04-01 20:37:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 861 [2023-04-01 20:37:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1202 [2023-04-01 20:37:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1842 [2023-04-01 20:37:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2046 [2023-04-01 20:37:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2810 [2023-04-01 20:37:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2888 [2023-04-01 20:37:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3426 [2023-04-01 20:37:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3469 [2023-04-01 20:37:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16976 backedges. 3894 proven. 1456 refuted. 0 times theorem prover too weak. 11626 trivial. 0 not checked. [2023-04-01 20:37:12,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387555342] [2023-04-01 20:37:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387555342] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:37:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94284137] [2023-04-01 20:37:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:12,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:12,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:37:12,716 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:37:12,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 20:37:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:13,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 6112 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:37:13,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:37:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16976 backedges. 8439 proven. 2 refuted. 0 times theorem prover too weak. 8535 trivial. 0 not checked. [2023-04-01 20:37:14,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:37:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16976 backedges. 4897 proven. 1677 refuted. 0 times theorem prover too weak. 10402 trivial. 0 not checked. [2023-04-01 20:37:15,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94284137] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:37:15,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:37:15,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:37:15,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368305670] [2023-04-01 20:37:15,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:37:15,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:37:15,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:15,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:37:15,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:37:15,433 INFO L87 Difference]: Start difference. First operand 113913 states and 124103 transitions. Second operand has 12 states, 12 states have (on average 202.16666666666666) internal successors, (2426), 10 states have internal predecessors, (2426), 7 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2023-04-01 20:37:29,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:29,532 INFO L93 Difference]: Finished difference Result 253614 states and 275044 transitions. [2023-04-01 20:37:29,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-04-01 20:37:29,534 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 202.16666666666666) internal successors, (2426), 10 states have internal predecessors, (2426), 7 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) Word has length 4787 [2023-04-01 20:37:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:29,838 INFO L225 Difference]: With dead ends: 253614 [2023-04-01 20:37:29,838 INFO L226 Difference]: Without dead ends: 138005 [2023-04-01 20:37:29,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9702 GetRequests, 9652 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=485, Invalid=1965, Unknown=0, NotChecked=0, Total=2450 [2023-04-01 20:37:29,960 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 6866 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 19560 mSolverCounterSat, 2972 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6866 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 22532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2972 IncrementalHoareTripleChecker+Valid, 19560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:29,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6866 Valid, 640 Invalid, 22532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2972 Valid, 19560 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-04-01 20:37:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138005 states. [2023-04-01 20:37:31,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138005 to 134492. [2023-04-01 20:37:31,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134492 states, 131878 states have (on average 1.0324769863055248) internal successors, (136161), 132394 states have internal predecessors, (136161), 630 states have call successors, (630), 630 states have call predecessors, (630), 1983 states have return successors, (5523), 1467 states have call predecessors, (5523), 629 states have call successors, (5523) [2023-04-01 20:37:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134492 states to 134492 states and 142314 transitions. [2023-04-01 20:37:31,895 INFO L78 Accepts]: Start accepts. Automaton has 134492 states and 142314 transitions. Word has length 4787 [2023-04-01 20:37:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:31,896 INFO L495 AbstractCegarLoop]: Abstraction has 134492 states and 142314 transitions. [2023-04-01 20:37:31,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 202.16666666666666) internal successors, (2426), 10 states have internal predecessors, (2426), 7 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2023-04-01 20:37:31,897 INFO L276 IsEmpty]: Start isEmpty. Operand 134492 states and 142314 transitions. [2023-04-01 20:37:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5036 [2023-04-01 20:37:32,899 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:32,900 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:37:32,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 20:37:33,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 20:37:33,112 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:33,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2019574933, now seen corresponding path program 1 times [2023-04-01 20:37:33,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:33,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352899940] [2023-04-01 20:37:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:33,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:37:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-01 20:37:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-01 20:37:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2023-04-01 20:37:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-04-01 20:37:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2023-04-01 20:37:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1395 [2023-04-01 20:37:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1612 [2023-04-01 20:37:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2071 [2023-04-01 20:37:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2771 [2023-04-01 20:37:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2878 [2023-04-01 20:37:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3136 [2023-04-01 20:37:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3674 [2023-04-01 20:37:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3717 [2023-04-01 20:37:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 21261 backedges. 4195 proven. 1666 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-04-01 20:37:41,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:41,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352899940] [2023-04-01 20:37:41,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352899940] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:37:41,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056502770] [2023-04-01 20:37:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:41,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:41,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:37:41,879 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:37:41,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 20:37:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:43,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 6526 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:37:43,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:37:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 21261 backedges. 4202 proven. 0 refuted. 0 times theorem prover too weak. 17059 trivial. 0 not checked. [2023-04-01 20:37:43,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:37:43,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056502770] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:37:43,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:37:43,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-04-01 20:37:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671104965] [2023-04-01 20:37:43,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:37:43,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:37:43,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:37:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:37:43,948 INFO L87 Difference]: Start difference. First operand 134492 states and 142314 transitions. Second operand has 3 states, 3 states have (on average 508.6666666666667) internal successors, (1526), 3 states have internal predecessors, (1526), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-04-01 20:37:46,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:46,751 INFO L93 Difference]: Finished difference Result 275675 states and 291987 transitions. [2023-04-01 20:37:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:37:46,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 508.6666666666667) internal successors, (1526), 3 states have internal predecessors, (1526), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 5035 [2023-04-01 20:37:46,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:46,759 INFO L225 Difference]: With dead ends: 275675 [2023-04-01 20:37:46,760 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 20:37:46,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5098 GetRequests, 5089 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:37:46,918 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 47 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:46,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1308 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2948 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 20:37:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 20:37:46,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 20:37:46,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 20:37:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 20:37:46,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5035 [2023-04-01 20:37:46,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:46,921 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 20:37:46,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 508.6666666666667) internal successors, (1526), 3 states have internal predecessors, (1526), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-04-01 20:37:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 20:37:46,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 20:37:46,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 20:37:46,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 20:37:47,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 20:37:47,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.