/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_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:19:52,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:19:52,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:19:52,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:19:52,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:19:52,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:19:52,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:19:52,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:19:52,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:19:52,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:19:52,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:19:52,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:19:52,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:19:52,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:19:52,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:19:52,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:19:52,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 23:19:52,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-30 23:19:52,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-30 23:19:52,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-30 23:19:52,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-30 23:19:52,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-30 23:19:52,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-30 23:19:52,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-30 23:19:52,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-30 23:19:52,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:19:52,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:19:52,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:19:52,185 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 [2023-03-30 23:19:52,214 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:19:52,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:19:52,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:19:52,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:19:52,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:19:52,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:19:52,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:19:52,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:19:52,217 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:19:52,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:19:52,218 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:19:52,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:19:52,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:19:52,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:19:52,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:19:52,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:19:52,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:19:52,219 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:19:52,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:19:52,219 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:19:52,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:19:52,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:19:52,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:19:52,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:19:52,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:19:52,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:19:52,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:19:52,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:19:52,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:19:52,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:19:52,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:19:52,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:19:52,221 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:19:52,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:19:52,221 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:19:52,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:19:52,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:19:52,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:19:52,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:19:52,455 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:19:52,455 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:19:52,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label23.c [2023-03-30 23:19:53,595 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:19:54,003 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:19:54,004 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label23.c [2023-03-30 23:19:54,033 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43114d81/41305ca320eb441094e37064c3d2ec1c/FLAGc25d449f0 [2023-03-30 23:19:54,050 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43114d81/41305ca320eb441094e37064c3d2ec1c [2023-03-30 23:19:54,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:19:54,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:19:54,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:19:54,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:19:54,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:19:54,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:19:54" (1/1) ... [2023-03-30 23:19:54,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a4abd4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:54, skipping insertion in model container [2023-03-30 23:19:54,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:19:54" (1/1) ... [2023-03-30 23:19:54,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:19:54,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:19:54,411 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_label23.c[4581,4594] [2023-03-30 23:19:55,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:19:55,147 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:19:55,171 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_label23.c[4581,4594] [2023-03-30 23:19:55,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:19:55,577 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:19:55,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55 WrapperNode [2023-03-30 23:19:55,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:19:55,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:19:55,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:19:55,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:19:55,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55" (1/1) ... [2023-03-30 23:19:55,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55" (1/1) ... [2023-03-30 23:19:55,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55" (1/1) ... [2023-03-30 23:19:55,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55" (1/1) ... [2023-03-30 23:19:55,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55" (1/1) ... [2023-03-30 23:19:55,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55" (1/1) ... [2023-03-30 23:19:55,750 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55" (1/1) ... [2023-03-30 23:19:55,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55" (1/1) ... [2023-03-30 23:19:55,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:19:55,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:19:55,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:19:55,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:19:55,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55" (1/1) ... [2023-03-30 23:19:55,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:19:55,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:19:55,838 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) [2023-03-30 23:19:55,861 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 [2023-03-30 23:19:55,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:19:55,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:19:55,878 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:19:55,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:19:55,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:19:55,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 23:19:55,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-30 23:19:55,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:19:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:19:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:19:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:19:55,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:19:55,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:19:55,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:19:55,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:19:55,991 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:19:55,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:19:59,719 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:19:59,733 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:19:59,733 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:19:59,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:19:59 BoogieIcfgContainer [2023-03-30 23:19:59,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:19:59,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:19:59,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:19:59,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:19:59,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:19:54" (1/3) ... [2023-03-30 23:19:59,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef00b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:19:59, skipping insertion in model container [2023-03-30 23:19:59,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:19:55" (2/3) ... [2023-03-30 23:19:59,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef00b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:19:59, skipping insertion in model container [2023-03-30 23:19:59,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:19:59" (3/3) ... [2023-03-30 23:19:59,744 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label23.c [2023-03-30 23:19:59,758 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:19:59,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:19:59,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:19:59,827 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;@67125f1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:19:59,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:19:59,834 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) [2023-03-30 23:19:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-03-30 23:19:59,841 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:19:59,842 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] [2023-03-30 23:19:59,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:19:59,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:19:59,847 INFO L85 PathProgramCache]: Analyzing trace with hash -701871808, now seen corresponding path program 1 times [2023-03-30 23:19:59,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:19:59,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740416645] [2023-03-30 23:19:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:19:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:20:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:00,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:20:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:20:00,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:20:00,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740416645] [2023-03-30 23:20:00,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740416645] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:20:00,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:20:00,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:20:00,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232413533] [2023-03-30 23:20:00,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:20:00,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:20:00,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:20:00,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:20:00,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:20:00,509 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 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-03-30 23:20:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:20:05,620 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-03-30 23:20:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:20:05,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 41 [2023-03-30 23:20:05,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:20:05,642 INFO L225 Difference]: With dead ends: 2471 [2023-03-30 23:20:05,643 INFO L226 Difference]: Without dead ends: 1568 [2023-03-30 23:20:05,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:20:05,657 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 3308 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3345 mSolverCounterSat, 1478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3308 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 4823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1478 IncrementalHoareTripleChecker+Valid, 3345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:20:05,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3308 Valid, 46 Invalid, 4823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1478 Valid, 3345 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-03-30 23:20:05,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-03-30 23:20:05,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-03-30 23:20:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1529 states have (on average 1.8521909744931329) internal successors, (2832), 1530 states have internal predecessors, (2832), 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) [2023-03-30 23:20:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2863 transitions. [2023-03-30 23:20:05,797 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2863 transitions. Word has length 41 [2023-03-30 23:20:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:20:05,797 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2863 transitions. [2023-03-30 23:20:05,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-03-30 23:20:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2863 transitions. [2023-03-30 23:20:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-03-30 23:20:05,801 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:20:05,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:20:05,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:20:05,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:20:05,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:20:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash 201082555, now seen corresponding path program 1 times [2023-03-30 23:20:05,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:20:05,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308083619] [2023-03-30 23:20:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:20:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:20:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:05,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:20:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:06,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:20:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:20:06,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:20:06,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308083619] [2023-03-30 23:20:06,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308083619] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:20:06,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:20:06,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:20:06,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254763703] [2023-03-30 23:20:06,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:20:06,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:20:06,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:20:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:20:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:20:06,185 INFO L87 Difference]: Start difference. First operand 1553 states and 2863 transitions. Second operand has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-03-30 23:20:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:20:11,818 INFO L93 Difference]: Finished difference Result 4757 states and 8776 transitions. [2023-03-30 23:20:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-30 23:20:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 4 states have internal predecessors, (104), 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 110 [2023-03-30 23:20:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:20:11,835 INFO L225 Difference]: With dead ends: 4757 [2023-03-30 23:20:11,835 INFO L226 Difference]: Without dead ends: 3210 [2023-03-30 23:20:11,839 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 [2023-03-30 23:20:11,841 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3152 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5597 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3152 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 6532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 5597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:20:11,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3152 Valid, 124 Invalid, 6532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 5597 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-03-30 23:20:11,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2023-03-30 23:20:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3139. [2023-03-30 23:20:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 3080 states have (on average 1.6357142857142857) internal successors, (5038), 3086 states have internal predecessors, (5038), 18 states have call successors, (18), 18 states have call predecessors, (18), 40 states have return successors, (85), 34 states have call predecessors, (85), 17 states have call successors, (85) [2023-03-30 23:20:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5141 transitions. [2023-03-30 23:20:11,986 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5141 transitions. Word has length 110 [2023-03-30 23:20:11,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:20:11,988 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 5141 transitions. [2023-03-30 23:20:11,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-03-30 23:20:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5141 transitions. [2023-03-30 23:20:11,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-03-30 23:20:11,994 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:20:11,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:20:11,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:20:11,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:20:11,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:20:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash -223878105, now seen corresponding path program 1 times [2023-03-30 23:20:11,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:20:11,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736045630] [2023-03-30 23:20:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:20:11,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:20:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:12,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:20:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:12,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:20:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:20:12,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:20:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736045630] [2023-03-30 23:20:12,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736045630] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:20:12,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74839661] [2023-03-30 23:20:12,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:20:12,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:20:12,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:20:12,309 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) [2023-03-30 23:20:12,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:20:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:12,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:20:12,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:20:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:20:12,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:20:12,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74839661] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:20:12,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:20:12,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-03-30 23:20:12,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005714698] [2023-03-30 23:20:12,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:20:12,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:20:12,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:20:12,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:20:12,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:20:12,495 INFO L87 Difference]: Start difference. First operand 3139 states and 5141 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-03-30 23:20:15,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:20:15,441 INFO L93 Difference]: Finished difference Result 9397 states and 15613 transitions. [2023-03-30 23:20:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:20:15,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 116 [2023-03-30 23:20:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:20:15,477 INFO L225 Difference]: With dead ends: 9397 [2023-03-30 23:20:15,477 INFO L226 Difference]: Without dead ends: 6264 [2023-03-30 23:20:15,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:20:15,485 INFO L413 NwaCegarLoop]: 1467 mSDtfsCounter, 740 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:20:15,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1499 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-03-30 23:20:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2023-03-30 23:20:15,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 6264. [2023-03-30 23:20:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6264 states, 6152 states have (on average 1.4333550065019507) internal successors, (8818), 6164 states have internal predecessors, (8818), 34 states have call successors, (34), 34 states have call predecessors, (34), 77 states have return successors, (296), 65 states have call predecessors, (296), 33 states have call successors, (296) [2023-03-30 23:20:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6264 states to 6264 states and 9148 transitions. [2023-03-30 23:20:15,632 INFO L78 Accepts]: Start accepts. Automaton has 6264 states and 9148 transitions. Word has length 116 [2023-03-30 23:20:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:20:15,633 INFO L495 AbstractCegarLoop]: Abstraction has 6264 states and 9148 transitions. [2023-03-30 23:20:15,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-03-30 23:20:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6264 states and 9148 transitions. [2023-03-30 23:20:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-03-30 23:20:15,639 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:20:15,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:20:15,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 23:20:15,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:20:15,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:20:15,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:20:15,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1660956088, now seen corresponding path program 1 times [2023-03-30 23:20:15,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:20:15,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572281284] [2023-03-30 23:20:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:20:15,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:20:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:16,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:20:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:16,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:20:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:16,216 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:20:16,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:20:16,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572281284] [2023-03-30 23:20:16,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572281284] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:20:16,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:20:16,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:20:16,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221814083] [2023-03-30 23:20:16,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:20:16,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:20:16,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:20:16,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:20:16,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:20:16,221 INFO L87 Difference]: Start difference. First operand 6264 states and 9148 transitions. Second operand has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 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) [2023-03-30 23:20:23,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:20:23,569 INFO L93 Difference]: Finished difference Result 25382 states and 38513 transitions. [2023-03-30 23:20:23,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:20:23,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 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 125 [2023-03-30 23:20:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:20:23,655 INFO L225 Difference]: With dead ends: 25382 [2023-03-30 23:20:23,655 INFO L226 Difference]: Without dead ends: 19124 [2023-03-30 23:20:23,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:20:23,679 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5335 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 6726 mSolverCounterSat, 2580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5335 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 9306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2580 IncrementalHoareTripleChecker+Valid, 6726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:20:23,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5335 Valid, 157 Invalid, 9306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2580 Valid, 6726 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-03-30 23:20:23,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19124 states. [2023-03-30 23:20:24,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19124 to 18247. [2023-03-30 23:20:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18247 states, 17834 states have (on average 1.3125490635864079) internal successors, (23408), 17911 states have internal predecessors, (23408), 94 states have call successors, (94), 94 states have call predecessors, (94), 318 states have return successors, (1890), 241 states have call predecessors, (1890), 93 states have call successors, (1890) [2023-03-30 23:20:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18247 states to 18247 states and 25392 transitions. [2023-03-30 23:20:24,190 INFO L78 Accepts]: Start accepts. Automaton has 18247 states and 25392 transitions. Word has length 125 [2023-03-30 23:20:24,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:20:24,191 INFO L495 AbstractCegarLoop]: Abstraction has 18247 states and 25392 transitions. [2023-03-30 23:20:24,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 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) [2023-03-30 23:20:24,192 INFO L276 IsEmpty]: Start isEmpty. Operand 18247 states and 25392 transitions. [2023-03-30 23:20:24,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-03-30 23:20:24,194 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:20:24,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:20:24,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-30 23:20:24,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:20:24,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:20:24,196 INFO L85 PathProgramCache]: Analyzing trace with hash 379995227, now seen corresponding path program 1 times [2023-03-30 23:20:24,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:20:24,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893824653] [2023-03-30 23:20:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:20:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:20:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:20:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:20:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-30 23:20:24,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:20:24,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893824653] [2023-03-30 23:20:24,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893824653] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:20:24,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45060722] [2023-03-30 23:20:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:20:24,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:20:24,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:20:24,673 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) [2023-03-30 23:20:24,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:20:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:24,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:20:24,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:20:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:20:24,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:20:24,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45060722] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:20:24,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:20:24,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-03-30 23:20:24,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628450892] [2023-03-30 23:20:24,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:20:24,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:20:24,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:20:24,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:20:24,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:20:24,858 INFO L87 Difference]: Start difference. First operand 18247 states and 25392 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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) [2023-03-30 23:20:27,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:20:27,753 INFO L93 Difference]: Finished difference Result 41961 states and 57765 transitions. [2023-03-30 23:20:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:20:27,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 190 [2023-03-30 23:20:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:20:27,834 INFO L225 Difference]: With dead ends: 41961 [2023-03-30 23:20:27,835 INFO L226 Difference]: Without dead ends: 23720 [2023-03-30 23:20:27,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:20:27,880 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 818 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:20:27,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 261 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-30 23:20:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23720 states. [2023-03-30 23:20:28,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23720 to 22181. [2023-03-30 23:20:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22181 states, 21690 states have (on average 1.2529276164130936) internal successors, (27176), 21782 states have internal predecessors, (27176), 114 states have call successors, (114), 114 states have call predecessors, (114), 376 states have return successors, (2299), 284 states have call predecessors, (2299), 113 states have call successors, (2299) [2023-03-30 23:20:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22181 states to 22181 states and 29589 transitions. [2023-03-30 23:20:28,480 INFO L78 Accepts]: Start accepts. Automaton has 22181 states and 29589 transitions. Word has length 190 [2023-03-30 23:20:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:20:28,480 INFO L495 AbstractCegarLoop]: Abstraction has 22181 states and 29589 transitions. [2023-03-30 23:20:28,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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) [2023-03-30 23:20:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 22181 states and 29589 transitions. [2023-03-30 23:20:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-03-30 23:20:28,485 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:20:28,485 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:20:28,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:20:28,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:20:28,691 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:20:28,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:20:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash 990748103, now seen corresponding path program 1 times [2023-03-30 23:20:28,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:20:28,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589460387] [2023-03-30 23:20:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:20:28,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:20:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:28,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:20:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:28,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:20:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:29,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-03-30 23:20:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:29,099 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 68 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-30 23:20:29,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:20:29,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589460387] [2023-03-30 23:20:29,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589460387] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:20:29,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581690999] [2023-03-30 23:20:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:20:29,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:20:29,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:20:29,101 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) [2023-03-30 23:20:29,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:20:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:29,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:20:29,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:20:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-03-30 23:20:29,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:20:29,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581690999] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:20:29,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:20:29,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-03-30 23:20:29,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193365663] [2023-03-30 23:20:29,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:20:29,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:20:29,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:20:29,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:20:29,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:20:29,362 INFO L87 Difference]: Start difference. First operand 22181 states and 29589 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:20:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:20:34,281 INFO L93 Difference]: Finished difference Result 64780 states and 91124 transitions. [2023-03-30 23:20:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-30 23:20:34,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 244 [2023-03-30 23:20:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:20:34,392 INFO L225 Difference]: With dead ends: 64780 [2023-03-30 23:20:34,392 INFO L226 Difference]: Without dead ends: 42605 [2023-03-30 23:20:34,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:20:34,439 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 2349 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4735 mSolverCounterSat, 1183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 5918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1183 IncrementalHoareTripleChecker+Valid, 4735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:20:34,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2349 Valid, 135 Invalid, 5918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1183 Valid, 4735 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-03-30 23:20:34,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42605 states. [2023-03-30 23:20:35,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42605 to 42388. [2023-03-30 23:20:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42388 states, 41297 states have (on average 1.178778119475991) internal successors, (48680), 41557 states have internal predecessors, (48680), 214 states have call successors, (214), 214 states have call predecessors, (214), 876 states have return successors, (6903), 616 states have call predecessors, (6903), 213 states have call successors, (6903) [2023-03-30 23:20:35,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42388 states to 42388 states and 55797 transitions. [2023-03-30 23:20:35,493 INFO L78 Accepts]: Start accepts. Automaton has 42388 states and 55797 transitions. Word has length 244 [2023-03-30 23:20:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:20:35,493 INFO L495 AbstractCegarLoop]: Abstraction has 42388 states and 55797 transitions. [2023-03-30 23:20:35,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:20:35,494 INFO L276 IsEmpty]: Start isEmpty. Operand 42388 states and 55797 transitions. [2023-03-30 23:20:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-03-30 23:20:35,502 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:20:35,503 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:20:35,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:20:35,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:20:35,710 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:20:35,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:20:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash 935826743, now seen corresponding path program 1 times [2023-03-30 23:20:35,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:20:35,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130637922] [2023-03-30 23:20:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:20:35,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:20:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:20:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:20:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-03-30 23:20:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:36,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-03-30 23:20:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-03-30 23:20:36,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:20:36,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130637922] [2023-03-30 23:20:36,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130637922] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:20:36,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213163152] [2023-03-30 23:20:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:20:36,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:20:36,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:20:36,143 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) [2023-03-30 23:20:36,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:20:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:20:36,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:20:36,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:20:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:20:36,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:20:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:20:36,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213163152] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:20:36,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:20:36,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:20:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321122790] [2023-03-30 23:20:36,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:20:36,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:20:36,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:20:36,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:20:36,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:20:36,900 INFO L87 Difference]: Start difference. First operand 42388 states and 55797 transitions. Second operand has 11 states, 11 states have (on average 42.0) internal successors, (462), 9 states have internal predecessors, (462), 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)