/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:00:37,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:00:37,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:00:37,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 00:00:37,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 00:00:37,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 00:00:37,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 00:00:37,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 00:00:37,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 00:00:37,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 00:00:37,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 00:00:37,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 00:00:37,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 00:00:37,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 00:00:37,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 00:00:37,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 00:00:37,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 00:00:37,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 00:00:37,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 00:00:37,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 00:00:37,777 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 [2023-04-02 00:00:37,791 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:00:37,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:00:37,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:00:37,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:00:37,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:00:37,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:00:37,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:00:37,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:00:37,793 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:00:37,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:00:37,793 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:00:37,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:00:37,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:00:37,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:00:37,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:00:37,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:00:37,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:00:37,794 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:00:37,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:00:37,794 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:00:37,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:00:37,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:00:37,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:00:37,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:00:37,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:00:37,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:00:37,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:00:37,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:00:37,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:00:37,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:00:37,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:00:37,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:00:37,796 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:00:37,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:00:37,796 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:00:37,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:00:37,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:00:38,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:00:38,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:00:38,019 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:00:38,019 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:00:38,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label45.c [2023-04-02 00:00:39,141 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:00:39,649 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:00:39,649 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label45.c [2023-04-02 00:00:39,707 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79b55bab5/533c1d8bf5514e81ac1f9eb565c22a1c/FLAGebe2d6f33 [2023-04-02 00:00:39,720 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79b55bab5/533c1d8bf5514e81ac1f9eb565c22a1c [2023-04-02 00:00:39,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:00:39,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:00:39,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:00:39,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:00:39,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:00:39,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:00:39" (1/1) ... [2023-04-02 00:00:39,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b6e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:39, skipping insertion in model container [2023-04-02 00:00:39,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:00:39" (1/1) ... [2023-04-02 00:00:39,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:00:39,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:00:40,246 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label45.c[6276,6289] [2023-04-02 00:00:41,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:00:41,178 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:00:41,204 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label45.c[6276,6289] [2023-04-02 00:00:41,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:00:41,742 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:00:41,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41 WrapperNode [2023-04-02 00:00:41,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:00:41,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:00:41,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:00:41,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:00:41,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41" (1/1) ... [2023-04-02 00:00:41,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41" (1/1) ... [2023-04-02 00:00:41,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41" (1/1) ... [2023-04-02 00:00:41,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41" (1/1) ... [2023-04-02 00:00:41,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41" (1/1) ... [2023-04-02 00:00:42,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41" (1/1) ... [2023-04-02 00:00:42,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41" (1/1) ... [2023-04-02 00:00:42,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41" (1/1) ... [2023-04-02 00:00:42,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:00:42,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:00:42,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:00:42,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:00:42,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41" (1/1) ... [2023-04-02 00:00:42,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:00:42,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:00:42,242 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) [2023-04-02 00:00:42,275 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 [2023-04-02 00:00:42,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:00:42,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:00:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:00:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-02 00:00:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-02 00:00:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-02 00:00:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-02 00:00:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-02 00:00:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-02 00:00:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:00:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:00:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:00:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:00:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:00:42,379 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:00:42,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:00:48,023 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:00:48,036 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:00:48,036 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 00:00:48,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:00:48 BoogieIcfgContainer [2023-04-02 00:00:48,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:00:48,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:00:48,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:00:48,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:00:48,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:00:39" (1/3) ... [2023-04-02 00:00:48,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a6e499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:00:48, skipping insertion in model container [2023-04-02 00:00:48,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:41" (2/3) ... [2023-04-02 00:00:48,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a6e499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:00:48, skipping insertion in model container [2023-04-02 00:00:48,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:00:48" (3/3) ... [2023-04-02 00:00:48,045 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label45.c [2023-04-02 00:00:48,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:00:48,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 00:00:48,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:00:48,114 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;@3387e808, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:00:48,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 00:00:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 00:00:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-02 00:00:48,127 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:00:48,128 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] [2023-04-02 00:00:48,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:00:48,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:00:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1224411640, now seen corresponding path program 1 times [2023-04-02 00:00:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:00:48,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693210544] [2023-04-02 00:00:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:48,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:00:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:48,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:00:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:00:48,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:00:48,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693210544] [2023-04-02 00:00:48,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693210544] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:00:48,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:00:48,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 00:00:48,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250621814] [2023-04-02 00:00:48,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:00:48,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 00:00:48,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:00:48,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 00:00:48,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:00:48,509 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 00:01:03,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:01:03,878 INFO L93 Difference]: Finished difference Result 6479 states and 12300 transitions. [2023-04-02 00:01:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 00:01:03,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2023-04-02 00:01:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:01:03,915 INFO L225 Difference]: With dead ends: 6479 [2023-04-02 00:01:03,916 INFO L226 Difference]: Without dead ends: 4634 [2023-04-02 00:01:03,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:01:03,931 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 6106 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 11995 mSolverCounterSat, 2910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6106 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 14905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2910 IncrementalHoareTripleChecker+Valid, 11995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2023-04-02 00:01:03,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6106 Valid, 504 Invalid, 14905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2910 Valid, 11995 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2023-04-02 00:01:03,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4634 states. [2023-04-02 00:01:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 4626. [2023-04-02 00:01:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4568 states have (on average 1.6786339754816113) internal successors, (7668), 4571 states have internal predecessors, (7668), 20 states have call successors, (20), 20 states have call predecessors, (20), 37 states have return successors, (77), 34 states have call predecessors, (77), 19 states have call successors, (77) [2023-04-02 00:01:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 7765 transitions. [2023-04-02 00:01:04,128 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 7765 transitions. Word has length 53 [2023-04-02 00:01:04,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:01:04,130 INFO L495 AbstractCegarLoop]: Abstraction has 4626 states and 7765 transitions. [2023-04-02 00:01:04,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 00:01:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 7765 transitions. [2023-04-02 00:01:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-02 00:01:04,138 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:01:04,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:01:04,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:01:04,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:01:04,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:01:04,140 INFO L85 PathProgramCache]: Analyzing trace with hash -381529077, now seen corresponding path program 1 times [2023-04-02 00:01:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:01:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963168295] [2023-04-02 00:01:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:04,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:01:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:01:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:01:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:01:04,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:01:04,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963168295] [2023-04-02 00:01:04,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963168295] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:01:04,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:01:04,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:01:04,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673188797] [2023-04-02 00:01:04,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:01:04,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 00:01:04,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:04,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 00:01:04,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:01:04,552 INFO L87 Difference]: Start difference. First operand 4626 states and 7765 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:01:22,287 INFO L93 Difference]: Finished difference Result 22107 states and 38124 transitions. [2023-04-02 00:01:22,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 00:01:22,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 126 [2023-04-02 00:01:22,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:01:22,364 INFO L225 Difference]: With dead ends: 22107 [2023-04-02 00:01:22,365 INFO L226 Difference]: Without dead ends: 17487 [2023-04-02 00:01:22,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-04-02 00:01:22,380 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 11767 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 13045 mSolverCounterSat, 3900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11767 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 16945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3900 IncrementalHoareTripleChecker+Valid, 13045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:01:22,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11767 Valid, 781 Invalid, 16945 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3900 Valid, 13045 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2023-04-02 00:01:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17487 states. [2023-04-02 00:01:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17487 to 17464. [2023-04-02 00:01:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17464 states, 17244 states have (on average 1.4196242171189979) internal successors, (24480), 17256 states have internal predecessors, (24480), 74 states have call successors, (74), 74 states have call predecessors, (74), 145 states have return successors, (764), 133 states have call predecessors, (764), 73 states have call successors, (764) [2023-04-02 00:01:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17464 states to 17464 states and 25318 transitions. [2023-04-02 00:01:22,794 INFO L78 Accepts]: Start accepts. Automaton has 17464 states and 25318 transitions. Word has length 126 [2023-04-02 00:01:22,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:01:22,795 INFO L495 AbstractCegarLoop]: Abstraction has 17464 states and 25318 transitions. [2023-04-02 00:01:22,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:22,796 INFO L276 IsEmpty]: Start isEmpty. Operand 17464 states and 25318 transitions. [2023-04-02 00:01:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 00:01:22,803 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:01:22,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:01:22,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 00:01:22,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:01:22,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:01:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1352121360, now seen corresponding path program 1 times [2023-04-02 00:01:22,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:01:22,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108067017] [2023-04-02 00:01:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:01:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:01:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:01:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:01:23,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:01:23,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108067017] [2023-04-02 00:01:23,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108067017] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:01:23,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:01:23,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:01:23,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852115487] [2023-04-02 00:01:23,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:01:23,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 00:01:23,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 00:01:23,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:01:23,275 INFO L87 Difference]: Start difference. First operand 17464 states and 25318 transitions. Second operand has 7 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:34,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:01:34,656 INFO L93 Difference]: Finished difference Result 52857 states and 78569 transitions. [2023-04-02 00:01:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 00:01:34,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 157 [2023-04-02 00:01:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:01:34,840 INFO L225 Difference]: With dead ends: 52857 [2023-04-02 00:01:34,840 INFO L226 Difference]: Without dead ends: 35399 [2023-04-02 00:01:34,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-02 00:01:34,919 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 11160 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 10957 mSolverCounterSat, 1808 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11160 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 12765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1808 IncrementalHoareTripleChecker+Valid, 10957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-04-02 00:01:34,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11160 Valid, 1123 Invalid, 12765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1808 Valid, 10957 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-04-02 00:01:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35399 states. [2023-04-02 00:01:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35399 to 31131. [2023-04-02 00:01:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31131 states, 30462 states have (on average 1.2870133280808878) internal successors, (39205), 30536 states have internal predecessors, (39205), 128 states have call successors, (128), 128 states have call predecessors, (128), 540 states have return successors, (3103), 466 states have call predecessors, (3103), 127 states have call successors, (3103) [2023-04-02 00:01:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31131 states to 31131 states and 42436 transitions. [2023-04-02 00:01:36,095 INFO L78 Accepts]: Start accepts. Automaton has 31131 states and 42436 transitions. Word has length 157 [2023-04-02 00:01:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:01:36,097 INFO L495 AbstractCegarLoop]: Abstraction has 31131 states and 42436 transitions. [2023-04-02 00:01:36,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 31131 states and 42436 transitions. [2023-04-02 00:01:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-04-02 00:01:36,099 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:01:36,100 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-02 00:01:36,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 00:01:36,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:01:36,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:01:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash -119406652, now seen corresponding path program 1 times [2023-04-02 00:01:36,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:01:36,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689297032] [2023-04-02 00:01:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:36,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:01:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:36,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:01:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:36,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:01:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:36,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 00:01:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 92 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 00:01:36,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:01:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689297032] [2023-04-02 00:01:36,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689297032] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:01:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589810115] [2023-04-02 00:01:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:36,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:01:36,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:01:36,426 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) [2023-04-02 00:01:36,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 00:01:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:36,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 00:01:36,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:01:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-04-02 00:01:36,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 00:01:36,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589810115] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:01:36,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 00:01:36,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-02 00:01:36,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078542458] [2023-04-02 00:01:36,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:01:36,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 00:01:36,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 00:01:36,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:01:36,851 INFO L87 Difference]: Start difference. First operand 31131 states and 42436 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:01:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:01:43,403 INFO L93 Difference]: Finished difference Result 92419 states and 130917 transitions. [2023-04-02 00:01:43,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 00:01:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 222 [2023-04-02 00:01:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:01:43,575 INFO L225 Difference]: With dead ends: 92419 [2023-04-02 00:01:43,575 INFO L226 Difference]: Without dead ends: 61294 [2023-04-02 00:01:43,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:01:43,631 INFO L413 NwaCegarLoop]: 1476 mSDtfsCounter, 1617 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4276 mSolverCounterSat, 1752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 6028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1752 IncrementalHoareTripleChecker+Valid, 4276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-02 00:01:43,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1630 Invalid, 6028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1752 Valid, 4276 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-02 00:01:43,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61294 states. [2023-04-02 00:01:44,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61294 to 59742. [2023-04-02 00:01:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59742 states, 58542 states have (on average 1.2404940043046018) internal successors, (72621), 58677 states have internal predecessors, (72621), 248 states have call successors, (248), 248 states have call predecessors, (248), 951 states have return successors, (8385), 816 states have call predecessors, (8385), 247 states have call successors, (8385) [2023-04-02 00:01:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59742 states to 59742 states and 81254 transitions. [2023-04-02 00:01:45,449 INFO L78 Accepts]: Start accepts. Automaton has 59742 states and 81254 transitions. Word has length 222 [2023-04-02 00:01:45,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:01:45,450 INFO L495 AbstractCegarLoop]: Abstraction has 59742 states and 81254 transitions. [2023-04-02 00:01:45,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:01:45,450 INFO L276 IsEmpty]: Start isEmpty. Operand 59742 states and 81254 transitions. [2023-04-02 00:01:45,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2023-04-02 00:01:45,481 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:01:45,483 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:01:45,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 00:01:45,689 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 [2023-04-02 00:01:45,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:01:45,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:01:45,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1174211572, now seen corresponding path program 1 times [2023-04-02 00:01:45,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:01:45,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262489710] [2023-04-02 00:01:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:45,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:01:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:01:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:01:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:01:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-04-02 00:01:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2023-04-02 00:01:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 234 proven. 97 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-02 00:01:47,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:01:47,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262489710] [2023-04-02 00:01:47,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262489710] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:01:47,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927077068] [2023-04-02 00:01:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:47,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:01:47,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:01:47,877 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) [2023-04-02 00:01:47,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 00:01:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:48,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 00:01:48,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:01:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 405 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-04-02 00:01:48,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:01:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 238 proven. 98 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-02 00:01:48,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927077068] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:01:48,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:01:48,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-04-02 00:01:48,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390800531] [2023-04-02 00:01:48,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:01:48,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 00:01:48,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:48,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 00:01:48,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-02 00:01:48,671 INFO L87 Difference]: Start difference. First operand 59742 states and 81254 transitions. Second operand has 12 states, 12 states have (on average 76.75) internal successors, (921), 10 states have internal predecessors, (921), 4 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-02 00:02:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:02:11,924 INFO L93 Difference]: Finished difference Result 183490 states and 276585 transitions. [2023-04-02 00:02:11,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 00:02:11,925 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 76.75) internal successors, (921), 10 states have internal predecessors, (921), 4 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 779 [2023-04-02 00:02:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:02:12,757 INFO L225 Difference]: With dead ends: 183490 [2023-04-02 00:02:12,757 INFO L226 Difference]: Without dead ends: 123754 [2023-04-02 00:02:12,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1635 GetRequests, 1591 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=371, Invalid=1521, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 00:02:12,905 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 8947 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 29730 mSolverCounterSat, 4552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8957 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 34282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4552 IncrementalHoareTripleChecker+Valid, 29730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2023-04-02 00:02:12,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8957 Valid, 1952 Invalid, 34282 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4552 Valid, 29730 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2023-04-02 00:02:12,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123754 states. [2023-04-02 00:02:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123754 to 121168. [2023-04-02 00:02:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121168 states, 117357 states have (on average 1.1519551454110109) internal successors, (135190), 118034 states have internal predecessors, (135190), 488 states have call successors, (488), 488 states have call predecessors, (488), 3322 states have return successors, (26059), 2645 states have call predecessors, (26059), 487 states have call successors, (26059) [2023-04-02 00:02:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121168 states to 121168 states and 161737 transitions. [2023-04-02 00:02:16,016 INFO L78 Accepts]: Start accepts. Automaton has 121168 states and 161737 transitions. Word has length 779 [2023-04-02 00:02:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:02:16,017 INFO L495 AbstractCegarLoop]: Abstraction has 121168 states and 161737 transitions. [2023-04-02 00:02:16,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 76.75) internal successors, (921), 10 states have internal predecessors, (921), 4 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-02 00:02:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 121168 states and 161737 transitions. [2023-04-02 00:02:16,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2023-04-02 00:02:16,039 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:02:16,039 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:02:16,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 00:02:16,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:02:16,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:02:16,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:02:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1554692737, now seen corresponding path program 1 times [2023-04-02 00:02:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:02:16,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527271355] [2023-04-02 00:02:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:02:16,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:02:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:02:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:02:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:17,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:02:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:17,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-02 00:02:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:17,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-02 00:02:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:17,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 808 [2023-04-02 00:02:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 511 proven. 11 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-04-02 00:02:17,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:02:17,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527271355] [2023-04-02 00:02:17,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527271355] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:02:17,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106948709] [2023-04-02 00:02:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:02:17,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:02:17,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:02:17,631 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) [2023-04-02 00:02:17,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 00:02:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:17,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 00:02:17,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:02:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 645 proven. 2 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-04-02 00:02:18,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:02:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 371 proven. 89 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-04-02 00:02:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106948709] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:02:18,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:02:18,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 17 [2023-04-02 00:02:18,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138601942] [2023-04-02 00:02:18,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:02:18,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 00:02:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:02:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 00:02:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-04-02 00:02:18,446 INFO L87 Difference]: Start difference. First operand 121168 states and 161737 transitions. Second operand has 17 states, 17 states have (on average 54.470588235294116) internal successors, (926), 15 states have internal predecessors, (926), 6 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-02 00:03:45,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:03:45,283 INFO L93 Difference]: Finished difference Result 651601 states and 981170 transitions. [2023-04-02 00:03:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2023-04-02 00:03:45,283 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 54.470588235294116) internal successors, (926), 15 states have internal predecessors, (926), 6 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 973 [2023-04-02 00:03:45,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:03:48,330 INFO L225 Difference]: With dead ends: 651601 [2023-04-02 00:03:48,331 INFO L226 Difference]: Without dead ends: 506813 [2023-04-02 00:03:48,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2410 GetRequests, 2159 SyntacticMatches, 1 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28067 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5759, Invalid=57493, Unknown=0, NotChecked=0, Total=63252 [2023-04-02 00:03:48,755 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 107765 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 100032 mSolverCounterSat, 24648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107765 SdHoareTripleChecker+Valid, 4796 SdHoareTripleChecker+Invalid, 124680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 24648 IncrementalHoareTripleChecker+Valid, 100032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.6s IncrementalHoareTripleChecker+Time [2023-04-02 00:03:48,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107765 Valid, 4796 Invalid, 124680 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [24648 Valid, 100032 Invalid, 0 Unknown, 0 Unchecked, 72.6s Time] [2023-04-02 00:03:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506813 states. [2023-04-02 00:03:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506813 to 453353. [2023-04-02 00:03:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453353 states, 442796 states have (on average 1.0690114635181889) internal successors, (473354), 444551 states have internal predecessors, (473354), 2143 states have call successors, (2143), 1874 states have call predecessors, (2143), 8413 states have return successors, (98920), 6927 states have call predecessors, (98920), 2142 states have call successors, (98920) [2023-04-02 00:03:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453353 states to 453353 states and 574417 transitions. [2023-04-02 00:03:59,767 INFO L78 Accepts]: Start accepts. Automaton has 453353 states and 574417 transitions. Word has length 973 [2023-04-02 00:03:59,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:03:59,768 INFO L495 AbstractCegarLoop]: Abstraction has 453353 states and 574417 transitions. [2023-04-02 00:03:59,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.470588235294116) internal successors, (926), 15 states have internal predecessors, (926), 6 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-02 00:03:59,768 INFO L276 IsEmpty]: Start isEmpty. Operand 453353 states and 574417 transitions. [2023-04-02 00:03:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1114 [2023-04-02 00:03:59,781 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:03:59,782 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:03:59,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 00:03:59,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:03:59,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:03:59,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:03:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1017110954, now seen corresponding path program 1 times [2023-04-02 00:03:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:03:59,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50683132] [2023-04-02 00:03:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:03:59,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:04:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:04:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:04:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:04:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-02 00:04:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2023-04-02 00:04:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:01,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2023-04-02 00:04:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:01,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2023-04-02 00:04:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 189 proven. 4 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2023-04-02 00:04:01,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:04:01,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50683132] [2023-04-02 00:04:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50683132] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:04:01,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909764668] [2023-04-02 00:04:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:04:01,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:04:01,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:04:01,291 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) [2023-04-02 00:04:01,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 00:04:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:01,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1480 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 00:04:01,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:04:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2023-04-02 00:04:01,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:04:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2023-04-02 00:04:02,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909764668] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:04:02,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:04:02,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-04-02 00:04:02,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818613103] [2023-04-02 00:04:02,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:04:02,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 00:04:02,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:04:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 00:04:02,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-04-02 00:04:02,318 INFO L87 Difference]: Start difference. First operand 453353 states and 574417 transitions. Second operand has 11 states, 11 states have (on average 82.18181818181819) internal successors, (904), 9 states have internal predecessors, (904), 5 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9)