/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/Problem12_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:29:01,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:29:01,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:29:01,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:29:01,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 22:29:01,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 22:29:01,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 22:29:01,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 22:29:01,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 22:29:01,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 22:29:01,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 22:29:01,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 22:29:01,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 22:29:01,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 22:29:01,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 22:29:01,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 22:29:01,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 22:29:01,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:29:01,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:29:01,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:29:01,880 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 22:29:01,898 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:29:01,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:29:01,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:29:01,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:29:01,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:29:01,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:29:01,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:29:01,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:29:01,900 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:29:01,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:29:01,900 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:29:01,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:29:01,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:29:01,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:29:01,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:29:01,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:29:01,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:29:01,901 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:29:01,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:29:01,901 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:29:01,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:29:01,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:29:01,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:29:01,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:29:01,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:29:01,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:29:01,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:29:01,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:29:01,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:29:01,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:29:01,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:29:01,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:29:01,909 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:29:01,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:29:01,909 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:29:01,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:29:02,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:29:02,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:29:02,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:29:02,108 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:29:02,111 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:29:02,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label36.c [2023-04-01 22:29:03,094 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:29:03,430 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:29:03,431 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label36.c [2023-04-01 22:29:03,455 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d13b605/73a22109cf47482d8d01001b3fcc2b47/FLAGfbc833a6d [2023-04-01 22:29:03,469 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d13b605/73a22109cf47482d8d01001b3fcc2b47 [2023-04-01 22:29:03,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:29:03,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:29:03,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:29:03,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:29:03,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:29:03,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:29:03" (1/1) ... [2023-04-01 22:29:03,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27d37a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:03, skipping insertion in model container [2023-04-01 22:29:03,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:29:03" (1/1) ... [2023-04-01 22:29:03,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:29:03,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:29:03,786 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/Problem12_label36.c[7066,7079] [2023-04-01 22:29:04,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:29:04,336 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:29:04,363 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label36.c[7066,7079] [2023-04-01 22:29:04,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:29:04,673 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:29:04,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04 WrapperNode [2023-04-01 22:29:04,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:29:04,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:29:04,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:29:04,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:29:04,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,843 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:29:04,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:29:04,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:29:04,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:29:04,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04" (1/1) ... [2023-04-01 22:29:04,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:29:04,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:04,899 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 22:29:04,907 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 22:29:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:29:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:29:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:29:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:29:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:29:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:29:04,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:29:04,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:29:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:29:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:29:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:29:04,992 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:29:04,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:29:08,222 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:29:08,232 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:29:08,233 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:29:08,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:29:08 BoogieIcfgContainer [2023-04-01 22:29:08,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:29:08,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:29:08,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:29:08,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:29:08,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:29:03" (1/3) ... [2023-04-01 22:29:08,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53811759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:29:08, skipping insertion in model container [2023-04-01 22:29:08,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:29:04" (2/3) ... [2023-04-01 22:29:08,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53811759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:29:08, skipping insertion in model container [2023-04-01 22:29:08,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:29:08" (3/3) ... [2023-04-01 22:29:08,240 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label36.c [2023-04-01 22:29:08,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:29:08,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:29:08,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:29:08,316 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;@16333e30, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:29:08,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:29:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 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 22:29:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-01 22:29:08,330 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:08,330 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] [2023-04-01 22:29:08,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:08,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1678557576, now seen corresponding path program 1 times [2023-04-01 22:29:08,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:08,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059531925] [2023-04-01 22:29:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:08,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:08,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:08,902 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 22:29:08,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059531925] [2023-04-01 22:29:08,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059531925] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:08,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:29:08,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 22:29:08,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560633619] [2023-04-01 22:29:08,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:08,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:29:08,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:08,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:29:08,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 22:29:08,947 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 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 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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) [2023-04-01 22:29:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:13,564 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:29:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:29:13,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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 63 [2023-04-01 22:29:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:13,592 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:29:13,592 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:29:13,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:29:13,603 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2437 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3113 mSolverCounterSat, 1199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 4312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1199 IncrementalHoareTripleChecker+Valid, 3113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:13,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2437 Valid, 36 Invalid, 4312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1199 Valid, 3113 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 22:29:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:29:13,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:29:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1529 states have (on average 1.8718116415958144) internal successors, (2862), 1530 states have internal predecessors, (2862), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 22:29:13,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2893 transitions. [2023-04-01 22:29:13,732 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2893 transitions. Word has length 63 [2023-04-01 22:29:13,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:13,732 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2893 transitions. [2023-04-01 22:29:13,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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) [2023-04-01 22:29:13,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2893 transitions. [2023-04-01 22:29:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-01 22:29:13,737 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:13,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:13,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:29:13,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:13,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:13,738 INFO L85 PathProgramCache]: Analyzing trace with hash -652726440, now seen corresponding path program 1 times [2023-04-01 22:29:13,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:13,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433948565] [2023-04-01 22:29:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:13,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:13,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:14,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433948565] [2023-04-01 22:29:14,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433948565] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:14,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:29:14,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:29:14,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18352903] [2023-04-01 22:29:14,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:14,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:29:14,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:14,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:29:14,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:29:14,109 INFO L87 Difference]: Start difference. First operand 1553 states and 2893 transitions. Second operand has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 4 states have internal predecessors, (137), 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) [2023-04-01 22:29:18,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:18,864 INFO L93 Difference]: Finished difference Result 4752 states and 8858 transitions. [2023-04-01 22:29:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:29:18,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 4 states have internal predecessors, (137), 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 143 [2023-04-01 22:29:18,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:18,876 INFO L225 Difference]: With dead ends: 4752 [2023-04-01 22:29:18,876 INFO L226 Difference]: Without dead ends: 3205 [2023-04-01 22:29:18,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:29:18,880 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6074 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4539 mSolverCounterSat, 962 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6074 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 5501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 962 IncrementalHoareTripleChecker+Valid, 4539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:18,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6074 Valid, 111 Invalid, 5501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [962 Valid, 4539 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 22:29:18,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3205 states. [2023-04-01 22:29:18,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3205 to 3136. [2023-04-01 22:29:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3136 states, 3078 states have (on average 1.6517218973359324) internal successors, (5084), 3084 states have internal predecessors, (5084), 18 states have call successors, (18), 18 states have call predecessors, (18), 39 states have return successors, (83), 33 states have call predecessors, (83), 17 states have call successors, (83) [2023-04-01 22:29:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 5185 transitions. [2023-04-01 22:29:18,984 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 5185 transitions. Word has length 143 [2023-04-01 22:29:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:18,986 INFO L495 AbstractCegarLoop]: Abstraction has 3136 states and 5185 transitions. [2023-04-01 22:29:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 4 states have internal predecessors, (137), 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) [2023-04-01 22:29:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 5185 transitions. [2023-04-01 22:29:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-04-01 22:29:18,997 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:18,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:18,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:29:18,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:18,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:18,998 INFO L85 PathProgramCache]: Analyzing trace with hash -573734537, now seen corresponding path program 1 times [2023-04-01 22:29:18,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:18,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641032831] [2023-04-01 22:29:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:18,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:19,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:19,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641032831] [2023-04-01 22:29:19,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641032831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:19,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:29:19,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:29:19,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593341180] [2023-04-01 22:29:19,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:19,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:29:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:29:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:29:19,359 INFO L87 Difference]: Start difference. First operand 3136 states and 5185 transitions. Second operand has 7 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 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) [2023-04-01 22:29:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:24,011 INFO L93 Difference]: Finished difference Result 9798 states and 16389 transitions. [2023-04-01 22:29:24,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:29:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 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 166 [2023-04-01 22:29:24,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:24,035 INFO L225 Difference]: With dead ends: 9798 [2023-04-01 22:29:24,035 INFO L226 Difference]: Without dead ends: 6668 [2023-04-01 22:29:24,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:29:24,045 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 5406 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4527 mSolverCounterSat, 1183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5406 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 5710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1183 IncrementalHoareTripleChecker+Valid, 4527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:24,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5406 Valid, 131 Invalid, 5710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1183 Valid, 4527 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 22:29:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6668 states. [2023-04-01 22:29:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6668 to 6439. [2023-04-01 22:29:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6439 states, 6261 states have (on average 1.4299632646542086) internal successors, (8953), 6296 states have internal predecessors, (8953), 34 states have call successors, (34), 34 states have call predecessors, (34), 143 states have return successors, (412), 108 states have call predecessors, (412), 33 states have call successors, (412) [2023-04-01 22:29:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6439 states to 6439 states and 9399 transitions. [2023-04-01 22:29:24,197 INFO L78 Accepts]: Start accepts. Automaton has 6439 states and 9399 transitions. Word has length 166 [2023-04-01 22:29:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:24,198 INFO L495 AbstractCegarLoop]: Abstraction has 6439 states and 9399 transitions. [2023-04-01 22:29:24,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 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) [2023-04-01 22:29:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 6439 states and 9399 transitions. [2023-04-01 22:29:24,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-04-01 22:29:24,199 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:24,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:24,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:29:24,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:24,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:24,200 INFO L85 PathProgramCache]: Analyzing trace with hash -641862101, now seen corresponding path program 1 times [2023-04-01 22:29:24,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:24,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952563293] [2023-04-01 22:29:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:24,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:24,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:24,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952563293] [2023-04-01 22:29:24,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952563293] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:24,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:29:24,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:29:24,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331937691] [2023-04-01 22:29:24,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:24,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:29:24,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:24,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:29:24,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:29:24,549 INFO L87 Difference]: Start difference. First operand 6439 states and 9399 transitions. Second operand has 8 states, 7 states have (on average 24.285714285714285) internal successors, (170), 5 states have internal predecessors, (170), 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) [2023-04-01 22:29:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:32,032 INFO L93 Difference]: Finished difference Result 26021 states and 39871 transitions. [2023-04-01 22:29:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:29:32,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 24.285714285714285) internal successors, (170), 5 states have internal predecessors, (170), 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 176 [2023-04-01 22:29:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:32,092 INFO L225 Difference]: With dead ends: 26021 [2023-04-01 22:29:32,092 INFO L226 Difference]: Without dead ends: 19588 [2023-04-01 22:29:32,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:29:32,111 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 3574 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 8498 mSolverCounterSat, 1838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3574 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 10336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1838 IncrementalHoareTripleChecker+Valid, 8498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:32,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3574 Valid, 161 Invalid, 10336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1838 Valid, 8498 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-04-01 22:29:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19588 states. [2023-04-01 22:29:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19588 to 19416. [2023-04-01 22:29:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19416 states, 18842 states have (on average 1.2932809680501007) internal successors, (24368), 18976 states have internal predecessors, (24368), 98 states have call successors, (98), 98 states have call predecessors, (98), 475 states have return successors, (2311), 341 states have call predecessors, (2311), 97 states have call successors, (2311) [2023-04-01 22:29:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19416 states to 19416 states and 26777 transitions. [2023-04-01 22:29:32,521 INFO L78 Accepts]: Start accepts. Automaton has 19416 states and 26777 transitions. Word has length 176 [2023-04-01 22:29:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:32,522 INFO L495 AbstractCegarLoop]: Abstraction has 19416 states and 26777 transitions. [2023-04-01 22:29:32,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 24.285714285714285) internal successors, (170), 5 states have internal predecessors, (170), 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) [2023-04-01 22:29:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 19416 states and 26777 transitions. [2023-04-01 22:29:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-04-01 22:29:32,524 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:32,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:32,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:29:32,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:32,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash -695968608, now seen corresponding path program 1 times [2023-04-01 22:29:32,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:32,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825483208] [2023-04-01 22:29:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:32,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:32,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:32,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:32,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825483208] [2023-04-01 22:29:32,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825483208] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:32,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215622467] [2023-04-01 22:29:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:32,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:32,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:32,757 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 22:29:32,775 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 22:29:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:32,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:29:32,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:33,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:29:33,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215622467] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:33,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:29:33,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:29:33,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301448621] [2023-04-01 22:29:33,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:33,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:29:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:33,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:29:33,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:29:33,065 INFO L87 Difference]: Start difference. First operand 19416 states and 26777 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:29:35,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:35,892 INFO L93 Difference]: Finished difference Result 45112 states and 63140 transitions. [2023-04-01 22:29:35,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:29:35,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 211 [2023-04-01 22:29:35,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:35,956 INFO L225 Difference]: With dead ends: 45112 [2023-04-01 22:29:35,956 INFO L226 Difference]: Without dead ends: 25702 [2023-04-01 22:29:35,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 215 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 22:29:35,987 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 762 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:35,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1291 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:29:36,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25702 states. [2023-04-01 22:29:36,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25702 to 22598. [2023-04-01 22:29:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22598 states, 21948 states have (on average 1.1944596318571168) internal successors, (26216), 22100 states have internal predecessors, (26216), 114 states have call successors, (114), 114 states have call predecessors, (114), 535 states have return successors, (2188), 383 states have call predecessors, (2188), 113 states have call successors, (2188) [2023-04-01 22:29:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22598 states to 22598 states and 28518 transitions. [2023-04-01 22:29:36,398 INFO L78 Accepts]: Start accepts. Automaton has 22598 states and 28518 transitions. Word has length 211 [2023-04-01 22:29:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:36,398 INFO L495 AbstractCegarLoop]: Abstraction has 22598 states and 28518 transitions. [2023-04-01 22:29:36,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:29:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 22598 states and 28518 transitions. [2023-04-01 22:29:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-04-01 22:29:36,403 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:36,403 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:29:36,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 22:29:36,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:36,611 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:36,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:36,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2025790428, now seen corresponding path program 1 times [2023-04-01 22:29:36,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:36,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976959969] [2023-04-01 22:29:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:36,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:37,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:37,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:29:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 110 proven. 8 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-04-01 22:29:37,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:37,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976959969] [2023-04-01 22:29:37,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976959969] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:37,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548451970] [2023-04-01 22:29:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:37,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:37,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:37,169 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 22:29:37,192 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 22:29:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:37,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:29:37,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 22:29:37,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:29:37,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548451970] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:29:37,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:29:37,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 22:29:37,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880152197] [2023-04-01 22:29:37,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:29:37,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:29:37,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:37,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:29:37,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:29:37,406 INFO L87 Difference]: Start difference. First operand 22598 states and 28518 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-04-01 22:29:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:40,783 INFO L93 Difference]: Finished difference Result 66306 states and 86252 transitions. [2023-04-01 22:29:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:29:40,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 311 [2023-04-01 22:29:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:40,899 INFO L225 Difference]: With dead ends: 66306 [2023-04-01 22:29:40,900 INFO L226 Difference]: Without dead ends: 43714 [2023-04-01 22:29:40,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:29:40,937 INFO L413 NwaCegarLoop]: 1464 mSDtfsCounter, 713 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2836 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:40,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1496 Invalid, 3211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2836 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 22:29:40,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43714 states. [2023-04-01 22:29:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43714 to 38323. [2023-04-01 22:29:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38323 states, 37362 states have (on average 1.1877576146887212) internal successors, (44377), 37582 states have internal predecessors, (44377), 194 states have call successors, (194), 194 states have call predecessors, (194), 766 states have return successors, (4924), 546 states have call predecessors, (4924), 193 states have call successors, (4924) [2023-04-01 22:29:41,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38323 states to 38323 states and 49495 transitions. [2023-04-01 22:29:41,666 INFO L78 Accepts]: Start accepts. Automaton has 38323 states and 49495 transitions. Word has length 311 [2023-04-01 22:29:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:29:41,666 INFO L495 AbstractCegarLoop]: Abstraction has 38323 states and 49495 transitions. [2023-04-01 22:29:41,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-04-01 22:29:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 38323 states and 49495 transitions. [2023-04-01 22:29:41,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-04-01 22:29:41,671 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:29:41,671 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:29:41,683 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 22:29:41,877 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 22:29:41,878 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:29:41,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:29:41,878 INFO L85 PathProgramCache]: Analyzing trace with hash 623103235, now seen corresponding path program 1 times [2023-04-01 22:29:41,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:29:41,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099727557] [2023-04-01 22:29:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:41,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:29:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:29:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:42,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:29:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:42,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:29:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:29:42,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:29:42,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099727557] [2023-04-01 22:29:42,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099727557] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:29:42,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742439781] [2023-04-01 22:29:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:29:42,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:29:42,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:29:42,222 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 22:29:42,240 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 22:29:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:29:42,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:29:42,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:29:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:42,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:29:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:29:42,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742439781] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:29:42,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:29:42,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:29:42,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114307628] [2023-04-01 22:29:42,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:29:42,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:29:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:29:42,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:29:42,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:29:42,886 INFO L87 Difference]: Start difference. First operand 38323 states and 49495 transitions. Second operand has 11 states, 11 states have (on average 48.90909090909091) internal successors, (538), 9 states have internal predecessors, (538), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:29:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:29:57,695 INFO L93 Difference]: Finished difference Result 139570 states and 201635 transitions. [2023-04-01 22:29:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-04-01 22:29:57,695 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 48.90909090909091) internal successors, (538), 9 states have internal predecessors, (538), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 324 [2023-04-01 22:29:57,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:29:58,029 INFO L225 Difference]: With dead ends: 139570 [2023-04-01 22:29:58,029 INFO L226 Difference]: Without dead ends: 101253 [2023-04-01 22:29:58,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 663 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=371, Invalid=1521, Unknown=0, NotChecked=0, Total=1892 [2023-04-01 22:29:58,082 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 10188 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 19540 mSolverCounterSat, 3944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10198 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 23484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3944 IncrementalHoareTripleChecker+Valid, 19540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:29:58,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10198 Valid, 599 Invalid, 23484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3944 Valid, 19540 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-04-01 22:29:58,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101253 states. [2023-04-01 22:29:59,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101253 to 91484. [2023-04-01 22:30:00,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91484 states, 89047 states have (on average 1.1161746044223837) internal successors, (99392), 89649 states have internal predecessors, (99392), 535 states have call successors, (535), 458 states have call predecessors, (535), 1901 states have return successors, (19382), 1376 states have call predecessors, (19382), 534 states have call successors, (19382) [2023-04-01 22:30:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91484 states to 91484 states and 119309 transitions. [2023-04-01 22:30:00,243 INFO L78 Accepts]: Start accepts. Automaton has 91484 states and 119309 transitions. Word has length 324 [2023-04-01 22:30:00,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:00,243 INFO L495 AbstractCegarLoop]: Abstraction has 91484 states and 119309 transitions. [2023-04-01 22:30:00,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 48.90909090909091) internal successors, (538), 9 states have internal predecessors, (538), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:30:00,244 INFO L276 IsEmpty]: Start isEmpty. Operand 91484 states and 119309 transitions. [2023-04-01 22:30:00,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-04-01 22:30:00,251 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:00,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:30:00,257 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 22:30:00,457 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 22:30:00,458 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:00,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:00,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1424772989, now seen corresponding path program 1 times [2023-04-01 22:30:00,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:00,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125936416] [2023-04-01 22:30:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:00,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:00,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:01,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:30:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 110 proven. 8 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-04-01 22:30:01,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:01,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125936416] [2023-04-01 22:30:01,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125936416] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:01,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35650452] [2023-04-01 22:30:01,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:01,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:01,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:01,154 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 22:30:01,157 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 22:30:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:01,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:01,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-04-01 22:30:01,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:30:01,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35650452] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:01,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:30:01,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 22:30:01,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415023973] [2023-04-01 22:30:01,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:01,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:30:01,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:01,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:30:01,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:30:01,335 INFO L87 Difference]: Start difference. First operand 91484 states and 119309 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-04-01 22:30:04,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:04,960 INFO L93 Difference]: Finished difference Result 182958 states and 239155 transitions. [2023-04-01 22:30:04,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:30:04,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 348 [2023-04-01 22:30:04,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:05,432 INFO L225 Difference]: With dead ends: 182958 [2023-04-01 22:30:05,433 INFO L226 Difference]: Without dead ends: 91484 [2023-04-01 22:30:05,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:30:05,521 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 783 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:05,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1088 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 22:30:05,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91484 states. [2023-04-01 22:30:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91484 to 90713. [2023-04-01 22:30:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90713 states, 88285 states have (on average 1.0983745823186273) internal successors, (96970), 88887 states have internal predecessors, (96970), 530 states have call successors, (530), 454 states have call predecessors, (530), 1897 states have return successors, (17179), 1371 states have call predecessors, (17179), 529 states have call successors, (17179) [2023-04-01 22:30:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90713 states to 90713 states and 114679 transitions. [2023-04-01 22:30:07,484 INFO L78 Accepts]: Start accepts. Automaton has 90713 states and 114679 transitions. Word has length 348 [2023-04-01 22:30:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:07,484 INFO L495 AbstractCegarLoop]: Abstraction has 90713 states and 114679 transitions. [2023-04-01 22:30:07,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-04-01 22:30:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 90713 states and 114679 transitions. [2023-04-01 22:30:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-04-01 22:30:07,508 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:07,508 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:30:07,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 22:30:07,713 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 22:30:07,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:07,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1555904756, now seen corresponding path program 1 times [2023-04-01 22:30:07,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:07,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588722174] [2023-04-01 22:30:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:07,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:30:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:08,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:30:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 387 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:30:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588722174] [2023-04-01 22:30:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588722174] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503806845] [2023-04-01 22:30:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:08,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:08,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:08,213 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 22:30:08,216 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 22:30:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:08,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:08,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:30:08,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:30:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:30:08,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503806845] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:30:08,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:30:08,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:30:08,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955906459] [2023-04-01 22:30:08,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:30:08,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:30:08,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:08,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:30:08,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:30:08,957 INFO L87 Difference]: Start difference. First operand 90713 states and 114679 transitions. Second operand has 11 states, 11 states have (on average 58.45454545454545) internal successors, (643), 9 states have internal predecessors, (643), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:30:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:19,895 INFO L93 Difference]: Finished difference Result 207995 states and 269452 transitions. [2023-04-01 22:30:19,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:30:19,897 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 58.45454545454545) internal successors, (643), 9 states have internal predecessors, (643), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 431 [2023-04-01 22:30:19,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:20,405 INFO L225 Difference]: With dead ends: 207995 [2023-04-01 22:30:20,405 INFO L226 Difference]: Without dead ends: 114157 [2023-04-01 22:30:20,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 873 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:30:20,480 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 4522 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 16340 mSolverCounterSat, 2177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4527 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 18517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2177 IncrementalHoareTripleChecker+Valid, 16340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:20,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4527 Valid, 278 Invalid, 18517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2177 Valid, 16340 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-04-01 22:30:20,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114157 states. [2023-04-01 22:30:22,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114157 to 114032. [2023-04-01 22:30:22,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114032 states, 111261 states have (on average 1.086732997186795) internal successors, (120911), 111892 states have internal predecessors, (120911), 679 states have call successors, (679), 574 states have call predecessors, (679), 2091 states have return successors, (19888), 1565 states have call predecessors, (19888), 678 states have call successors, (19888) [2023-04-01 22:30:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114032 states to 114032 states and 141478 transitions. [2023-04-01 22:30:22,852 INFO L78 Accepts]: Start accepts. Automaton has 114032 states and 141478 transitions. Word has length 431 [2023-04-01 22:30:22,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:22,852 INFO L495 AbstractCegarLoop]: Abstraction has 114032 states and 141478 transitions. [2023-04-01 22:30:22,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 58.45454545454545) internal successors, (643), 9 states have internal predecessors, (643), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:30:22,853 INFO L276 IsEmpty]: Start isEmpty. Operand 114032 states and 141478 transitions. [2023-04-01 22:30:22,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-04-01 22:30:22,891 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:22,891 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:22,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 22:30:23,098 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 22:30:23,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:23,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:23,099 INFO L85 PathProgramCache]: Analyzing trace with hash -285923420, now seen corresponding path program 1 times [2023-04-01 22:30:23,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:23,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558102845] [2023-04-01 22:30:23,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:23,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:23,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:30:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 22:30:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 174 proven. 3 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-04-01 22:30:23,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:23,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558102845] [2023-04-01 22:30:23,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558102845] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:23,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421718372] [2023-04-01 22:30:23,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:23,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:23,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:23,661 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 22:30:23,663 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 22:30:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:23,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:23,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-04-01 22:30:23,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:30:23,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421718372] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:23,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:30:23,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:30:23,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799385262] [2023-04-01 22:30:23,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:23,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:30:23,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:30:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:30:23,934 INFO L87 Difference]: Start difference. First operand 114032 states and 141478 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-04-01 22:30:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:27,795 INFO L93 Difference]: Finished difference Result 248154 states and 311386 transitions. [2023-04-01 22:30:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:30:27,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 535 [2023-04-01 22:30:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:28,339 INFO L225 Difference]: With dead ends: 248154 [2023-04-01 22:30:28,340 INFO L226 Difference]: Without dead ends: 134132 [2023-04-01 22:30:28,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:30:28,449 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 829 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:28,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1188 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 22:30:28,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134132 states. [2023-04-01 22:30:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134132 to 131031. [2023-04-01 22:30:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131031 states, 128045 states have (on average 1.0846577375141553) internal successors, (138885), 128687 states have internal predecessors, (138885), 786 states have call successors, (786), 662 states have call predecessors, (786), 2199 states have return successors, (22313), 1681 states have call predecessors, (22313), 785 states have call successors, (22313) [2023-04-01 22:30:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131031 states to 131031 states and 161984 transitions. [2023-04-01 22:30:31,177 INFO L78 Accepts]: Start accepts. Automaton has 131031 states and 161984 transitions. Word has length 535 [2023-04-01 22:30:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:31,178 INFO L495 AbstractCegarLoop]: Abstraction has 131031 states and 161984 transitions. [2023-04-01 22:30:31,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-04-01 22:30:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 131031 states and 161984 transitions. [2023-04-01 22:30:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2023-04-01 22:30:31,259 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:31,260 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:31,281 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 22:30:31,467 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 22:30:31,468 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:31,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash 320155282, now seen corresponding path program 1 times [2023-04-01 22:30:31,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:31,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908548992] [2023-04-01 22:30:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:31,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:33,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:30:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 22:30:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:34,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:30:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 258 proven. 239 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-01 22:30:34,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908548992] [2023-04-01 22:30:34,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908548992] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843134774] [2023-04-01 22:30:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:34,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:34,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:34,097 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 22:30:34,099 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 22:30:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:34,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:30:34,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-04-01 22:30:34,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:30:34,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843134774] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:34,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:30:34,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-04-01 22:30:34,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873809795] [2023-04-01 22:30:34,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:34,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:30:34,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:34,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:30:34,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:30:34,816 INFO L87 Difference]: Start difference. First operand 131031 states and 161984 transitions. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 4 states have internal predecessors, (568), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 22:30:39,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:39,767 INFO L93 Difference]: Finished difference Result 263344 states and 319629 transitions. [2023-04-01 22:30:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:30:39,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 4 states have internal predecessors, (568), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 809 [2023-04-01 22:30:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:40,104 INFO L225 Difference]: With dead ends: 263344 [2023-04-01 22:30:40,104 INFO L226 Difference]: Without dead ends: 132323 [2023-04-01 22:30:40,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 817 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-04-01 22:30:40,287 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 2076 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4610 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 5248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 4610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:40,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 151 Invalid, 5248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 4610 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-01 22:30:40,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132323 states. [2023-04-01 22:30:42,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132323 to 131429. [2023-04-01 22:30:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131429 states, 128505 states have (on average 1.0763472238434302) internal successors, (138316), 129182 states have internal predecessors, (138316), 666 states have call successors, (666), 666 states have call predecessors, (666), 2257 states have return successors, (15524), 1580 states have call predecessors, (15524), 665 states have call successors, (15524) [2023-04-01 22:30:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131429 states to 131429 states and 154506 transitions. [2023-04-01 22:30:42,776 INFO L78 Accepts]: Start accepts. Automaton has 131429 states and 154506 transitions. Word has length 809 [2023-04-01 22:30:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:42,777 INFO L495 AbstractCegarLoop]: Abstraction has 131429 states and 154506 transitions. [2023-04-01 22:30:42,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 4 states have internal predecessors, (568), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 22:30:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 131429 states and 154506 transitions. [2023-04-01 22:30:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2023-04-01 22:30:42,825 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:42,826 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:42,831 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 22:30:43,031 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 22:30:43,032 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:43,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash -779854679, now seen corresponding path program 1 times [2023-04-01 22:30:43,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:43,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805367023] [2023-04-01 22:30:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:43,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:43,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:43,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:43,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:30:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 22:30:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:44,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2023-04-01 22:30:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:30:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 443 proven. 105 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-04-01 22:30:44,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805367023] [2023-04-01 22:30:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805367023] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:44,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015397774] [2023-04-01 22:30:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:44,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:44,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:44,363 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 22:30:44,375 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 22:30:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:44,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:44,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 752 proven. 2 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-04-01 22:30:44,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:30:45,013 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 445 proven. 106 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-04-01 22:30:45,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015397774] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:30:45,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:30:45,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 9 [2023-04-01 22:30:45,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086434014] [2023-04-01 22:30:45,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:30:45,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 22:30:45,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:45,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 22:30:45,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:30:45,017 INFO L87 Difference]: Start difference. First operand 131429 states and 154506 transitions. Second operand has 9 states, 9 states have (on average 127.66666666666667) internal successors, (1149), 7 states have internal predecessors, (1149), 3 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 22:30:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:53,269 INFO L93 Difference]: Finished difference Result 308342 states and 371269 transitions. [2023-04-01 22:30:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 22:30:53,269 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 127.66666666666667) internal successors, (1149), 7 states have internal predecessors, (1149), 3 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 856 [2023-04-01 22:30:53,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:53,842 INFO L225 Difference]: With dead ends: 308342 [2023-04-01 22:30:53,842 INFO L226 Difference]: Without dead ends: 177686 [2023-04-01 22:30:53,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1740 GetRequests, 1723 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:30:53,942 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 3174 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 8341 mSolverCounterSat, 1542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3175 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 9883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1542 IncrementalHoareTripleChecker+Valid, 8341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:53,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3175 Valid, 133 Invalid, 9883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1542 Valid, 8341 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 22:30:54,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177686 states. [2023-04-01 22:30:56,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177686 to 171134. [2023-04-01 22:30:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171134 states, 167565 states have (on average 1.067144093336914) internal successors, (178816), 168365 states have internal predecessors, (178816), 870 states have call successors, (870), 870 states have call predecessors, (870), 2698 states have return successors, (19721), 1898 states have call predecessors, (19721), 869 states have call successors, (19721) [2023-04-01 22:30:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171134 states to 171134 states and 199407 transitions. [2023-04-01 22:30:57,220 INFO L78 Accepts]: Start accepts. Automaton has 171134 states and 199407 transitions. Word has length 856 [2023-04-01 22:30:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:57,237 INFO L495 AbstractCegarLoop]: Abstraction has 171134 states and 199407 transitions. [2023-04-01 22:30:57,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 127.66666666666667) internal successors, (1149), 7 states have internal predecessors, (1149), 3 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 22:30:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 171134 states and 199407 transitions. [2023-04-01 22:30:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2023-04-01 22:30:57,353 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:57,353 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:57,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:30:57,558 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 22:30:57,559 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:57,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:57,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1933047786, now seen corresponding path program 1 times [2023-04-01 22:30:57,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:57,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663062793] [2023-04-01 22:30:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:57,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:30:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 22:30:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:59,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-04-01 22:31:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:00,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:31:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 236 proven. 496 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-04-01 22:31:00,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:00,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663062793] [2023-04-01 22:31:00,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663062793] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:00,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140811117] [2023-04-01 22:31:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:00,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:00,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:00,098 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 22:31:00,100 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 22:31:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:00,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-01 22:31:00,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:31:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 592 proven. 39 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-04-01 22:31:01,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:31:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 236 proven. 501 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-04-01 22:31:03,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140811117] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:31:03,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:31:03,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 24 [2023-04-01 22:31:03,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216438191] [2023-04-01 22:31:03,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:31:03,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 22:31:03,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:31:03,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 22:31:03,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:31:03,199 INFO L87 Difference]: Start difference. First operand 171134 states and 199407 transitions. Second operand has 24 states, 24 states have (on average 57.583333333333336) internal successors, (1382), 22 states have internal predecessors, (1382), 6 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 22:31:20,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:31:20,037 INFO L93 Difference]: Finished difference Result 388805 states and 457569 transitions. [2023-04-01 22:31:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-04-01 22:31:20,038 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 57.583333333333336) internal successors, (1382), 22 states have internal predecessors, (1382), 6 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 981 [2023-04-01 22:31:20,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:31:20,735 INFO L225 Difference]: With dead ends: 388805 [2023-04-01 22:31:20,735 INFO L226 Difference]: Without dead ends: 215479 [2023-04-01 22:31:20,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2101 GetRequests, 2017 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2228 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1402, Invalid=5738, Unknown=0, NotChecked=0, Total=7140 [2023-04-01 22:31:20,867 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 16271 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 15502 mSolverCounterSat, 4268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16279 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 19770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4268 IncrementalHoareTripleChecker+Valid, 15502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:31:20,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16279 Valid, 775 Invalid, 19770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4268 Valid, 15502 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-04-01 22:31:21,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215479 states. [2023-04-01 22:31:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215479 to 200272. [2023-04-01 22:31:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200272 states, 196398 states have (on average 1.0543844642002465) internal successors, (207079), 197209 states have internal predecessors, (207079), 1022 states have call successors, (1022), 1022 states have call predecessors, (1022), 2851 states have return successors, (20599), 2040 states have call predecessors, (20599), 1021 states have call successors, (20599) [2023-04-01 22:31:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200272 states to 200272 states and 228700 transitions. [2023-04-01 22:31:24,664 INFO L78 Accepts]: Start accepts. Automaton has 200272 states and 228700 transitions. Word has length 981 [2023-04-01 22:31:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:31:24,665 INFO L495 AbstractCegarLoop]: Abstraction has 200272 states and 228700 transitions. [2023-04-01 22:31:24,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 57.583333333333336) internal successors, (1382), 22 states have internal predecessors, (1382), 6 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 22:31:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 200272 states and 228700 transitions. [2023-04-01 22:31:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2023-04-01 22:31:24,742 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:31:24,743 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:31:24,749 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 22:31:24,948 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 22:31:24,949 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:31:24,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:31:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 442179290, now seen corresponding path program 1 times [2023-04-01 22:31:24,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:31:24,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346520732] [2023-04-01 22:31:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:24,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:31:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:31:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:31:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:25,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:31:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:25,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:31:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:25,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2023-04-01 22:31:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2023-04-01 22:31:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:31:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 372 proven. 240 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-04-01 22:31:26,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:26,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346520732] [2023-04-01 22:31:26,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346520732] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:26,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971220339] [2023-04-01 22:31:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:26,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:26,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:26,015 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:31:26,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 22:31:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:26,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 22:31:26,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:31:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 737 proven. 59 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2023-04-01 22:31:29,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:31:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 737 proven. 59 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2023-04-01 22:31:32,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971220339] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:31:32,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:31:32,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-04-01 22:31:32,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345127503] [2023-04-01 22:31:32,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:31:32,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 22:31:32,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:31:32,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 22:31:32,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-04-01 22:31:32,948 INFO L87 Difference]: Start difference. First operand 200272 states and 228700 transitions. Second operand has 17 states, 17 states have (on average 89.17647058823529) internal successors, (1516), 15 states have internal predecessors, (1516), 9 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:32:13,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:13,421 INFO L93 Difference]: Finished difference Result 545733 states and 632142 transitions. [2023-04-01 22:32:13,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2023-04-01 22:32:13,422 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 89.17647058823529) internal successors, (1516), 15 states have internal predecessors, (1516), 9 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 991 [2023-04-01 22:32:13,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:14,219 INFO L225 Difference]: With dead ends: 545733 [2023-04-01 22:32:14,219 INFO L226 Difference]: Without dead ends: 339990 [2023-04-01 22:32:14,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2396 GetRequests, 2175 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21415 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5704, Invalid=43802, Unknown=0, NotChecked=0, Total=49506 [2023-04-01 22:32:14,485 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 25284 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 37288 mSolverCounterSat, 10843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25284 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 48131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 10843 IncrementalHoareTripleChecker+Valid, 37288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:14,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25284 Valid, 1084 Invalid, 48131 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [10843 Valid, 37288 Invalid, 0 Unknown, 0 Unchecked, 29.3s Time] [2023-04-01 22:32:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339990 states. [2023-04-01 22:32:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339990 to 312792. [2023-04-01 22:32:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312792 states, 306417 states have (on average 1.0428501029642612) internal successors, (319547), 307717 states have internal predecessors, (319547), 1590 states have call successors, (1590), 1590 states have call predecessors, (1590), 4784 states have return successors, (25956), 3484 states have call predecessors, (25956), 1589 states have call successors, (25956) [2023-04-01 22:32:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312792 states to 312792 states and 347093 transitions. [2023-04-01 22:32:19,942 INFO L78 Accepts]: Start accepts. Automaton has 312792 states and 347093 transitions. Word has length 991 [2023-04-01 22:32:19,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:19,942 INFO L495 AbstractCegarLoop]: Abstraction has 312792 states and 347093 transitions. [2023-04-01 22:32:19,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 89.17647058823529) internal successors, (1516), 15 states have internal predecessors, (1516), 9 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:32:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 312792 states and 347093 transitions. [2023-04-01 22:32:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2023-04-01 22:32:20,058 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:20,059 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, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:20,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 22:32:20,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 22:32:20,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:20,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash -47048632, now seen corresponding path program 1 times [2023-04-01 22:32:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:20,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243242875] [2023-04-01 22:32:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:20,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:21,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:21,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:32:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:21,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:32:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2023-04-01 22:32:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:32:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:32:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 229 proven. 22 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2023-04-01 22:32:21,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:21,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243242875] [2023-04-01 22:32:21,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243242875] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:32:21,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552417908] [2023-04-01 22:32:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:21,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:32:21,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:32:22,000 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:32:22,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 22:32:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:22,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:32:22,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:32:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2023-04-01 22:32:22,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:32:22,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552417908] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:32:22,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:32:22,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-04-01 22:32:22,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655281555] [2023-04-01 22:32:22,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:32:22,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:32:22,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:22,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:32:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:32:22,329 INFO L87 Difference]: Start difference. First operand 312792 states and 347093 transitions. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 22:32:28,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:28,054 INFO L93 Difference]: Finished difference Result 656102 states and 727149 transitions. [2023-04-01 22:32:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:32:28,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1051 [2023-04-01 22:32:28,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:28,058 INFO L225 Difference]: With dead ends: 656102 [2023-04-01 22:32:28,058 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 22:32:28,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1076 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:32:28,517 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 731 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:28,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1396 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 22:32:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 22:32:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 22:32:28,518 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 22:32:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 22:32:28,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1051 [2023-04-01 22:32:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:28,520 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 22:32:28,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 22:32:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 22:32:28,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 22:32:28,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 22:32:28,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 22:32:28,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 22:32:28,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.