/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:49:30,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:49:30,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:49:30,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:49:30,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:49:30,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:49:30,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:49:30,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:49:30,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:49:30,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:49:30,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:49:30,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:49:30,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:49:30,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:49:30,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:49:30,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:49:30,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 23:49:30,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-30 23:49:30,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-30 23:49:30,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-30 23:49:30,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-30 23:49:30,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-30 23:49:30,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-30 23:49:30,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-30 23:49:30,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-30 23:49:30,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:49:30,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:49:30,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:49:30,174 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 23:49:30,196 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:49:30,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:49:30,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:49:30,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:49:30,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:49:30,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:49:30,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:49:30,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:49:30,198 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:49:30,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:49:30,199 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:49:30,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:49:30,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:49:30,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:49:30,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:49:30,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:49:30,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:49:30,199 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:49:30,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:49:30,200 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:49:30,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:49:30,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:49:30,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:49:30,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:49:30,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:49:30,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:49:30,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:49:30,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:49:30,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:49:30,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:49:30,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:49:30,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:49:30,201 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:49:30,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:49:30,201 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:49:30,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:49:30,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:49:30,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:49:30,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:49:30,395 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:49:30,395 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:49:30,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label30.c [2023-03-30 23:49:31,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:49:31,743 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:49:31,743 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label30.c [2023-03-30 23:49:31,783 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401502505/9c1ffb68bfea418c9b2dd80fc6c92059/FLAG34f8de732 [2023-03-30 23:49:31,793 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401502505/9c1ffb68bfea418c9b2dd80fc6c92059 [2023-03-30 23:49:31,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:49:31,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:49:31,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:49:31,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:49:31,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:49:31,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:49:31" (1/1) ... [2023-03-30 23:49:31,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d59702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:31, skipping insertion in model container [2023-03-30 23:49:31,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:49:31" (1/1) ... [2023-03-30 23:49:31,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:49:31,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:49:32,197 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label30.c[6405,6418] [2023-03-30 23:49:33,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:49:33,106 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:49:33,130 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label30.c[6405,6418] [2023-03-30 23:49:33,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:49:33,688 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:49:33,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33 WrapperNode [2023-03-30 23:49:33,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:49:33,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:49:33,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:49:33,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:49:33,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33" (1/1) ... [2023-03-30 23:49:33,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33" (1/1) ... [2023-03-30 23:49:33,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33" (1/1) ... [2023-03-30 23:49:33,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33" (1/1) ... [2023-03-30 23:49:33,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33" (1/1) ... [2023-03-30 23:49:33,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33" (1/1) ... [2023-03-30 23:49:33,905 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33" (1/1) ... [2023-03-30 23:49:33,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33" (1/1) ... [2023-03-30 23:49:33,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:49:33,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:49:33,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:49:33,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:49:33,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33" (1/1) ... [2023-03-30 23:49:33,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:49:33,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:49:33,998 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 23:49:34,018 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 23:49:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:49:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:49:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:49:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:49:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:49:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 23:49:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-30 23:49:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-03-30 23:49:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-03-30 23:49:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:49:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:49:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:49:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 23:49:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-30 23:49:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-03-30 23:49:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-03-30 23:49:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:49:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:49:34,095 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:49:34,096 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:49:39,578 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:49:39,602 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:49:39,603 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:49:39,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:49:39 BoogieIcfgContainer [2023-03-30 23:49:39,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:49:39,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:49:39,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:49:39,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:49:39,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:49:31" (1/3) ... [2023-03-30 23:49:39,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471f25c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:49:39, skipping insertion in model container [2023-03-30 23:49:39,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:49:33" (2/3) ... [2023-03-30 23:49:39,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471f25c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:49:39, skipping insertion in model container [2023-03-30 23:49:39,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:49:39" (3/3) ... [2023-03-30 23:49:39,612 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label30.c [2023-03-30 23:49:39,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:49:39,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:49:39,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:49:39,697 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;@474d3efb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:49:39,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:49:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-30 23:49:39,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-30 23:49:39,714 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:49:39,715 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] [2023-03-30 23:49:39,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:49:39,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:49:39,720 INFO L85 PathProgramCache]: Analyzing trace with hash 697954444, now seen corresponding path program 1 times [2023-03-30 23:49:39,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:49:39,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890555434] [2023-03-30 23:49:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:49:39,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:49:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:49:40,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:49:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:49:40,147 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 23:49:40,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:49:40,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890555434] [2023-03-30 23:49:40,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890555434] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:49:40,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:49:40,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:49:40,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325813581] [2023-03-30 23:49:40,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:49:40,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:49:40,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:49:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:49:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:49:40,208 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 23:49:52,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:49:52,216 INFO L93 Difference]: Finished difference Result 6483 states and 12306 transitions. [2023-03-30 23:49:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:49:52,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 54 [2023-03-30 23:49:52,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:49:52,239 INFO L225 Difference]: With dead ends: 6483 [2023-03-30 23:49:52,239 INFO L226 Difference]: Without dead ends: 4638 [2023-03-30 23:49:52,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:49:52,247 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 7908 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 9147 mSolverCounterSat, 3639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7908 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 12786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3639 IncrementalHoareTripleChecker+Valid, 9147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:49:52,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7908 Valid, 495 Invalid, 12786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3639 Valid, 9147 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-03-30 23:49:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2023-03-30 23:49:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 4629. [2023-03-30 23:49:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4571 states have (on average 1.6764384161015096) internal successors, (7663), 4574 states have internal predecessors, (7663), 20 states have call successors, (20), 20 states have call predecessors, (20), 37 states have return successors, (77), 34 states have call predecessors, (77), 19 states have call successors, (77) [2023-03-30 23:49:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7760 transitions. [2023-03-30 23:49:52,365 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7760 transitions. Word has length 54 [2023-03-30 23:49:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:49:52,365 INFO L495 AbstractCegarLoop]: Abstraction has 4629 states and 7760 transitions. [2023-03-30 23:49:52,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 23:49:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7760 transitions. [2023-03-30 23:49:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-03-30 23:49:52,369 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:49:52,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:52,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:49:52,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:49:52,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:49:52,370 INFO L85 PathProgramCache]: Analyzing trace with hash -109856011, now seen corresponding path program 1 times [2023-03-30 23:49:52,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:49:52,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958534985] [2023-03-30 23:49:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:49:52,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:49:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:49:52,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:49:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:49:52,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:49:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:49:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:49:52,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:49:52,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958534985] [2023-03-30 23:49:52,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958534985] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:49:52,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:49:52,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:49:52,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952637561] [2023-03-30 23:49:52,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:49:52,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:49:52,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:49:52,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:49:52,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:49:52,754 INFO L87 Difference]: Start difference. First operand 4629 states and 7760 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) [2023-03-30 23:50:03,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:50:03,738 INFO L93 Difference]: Finished difference Result 13837 states and 23541 transitions. [2023-03-30 23:50:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:50:03,741 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 [2023-03-30 23:50:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:50:03,784 INFO L225 Difference]: With dead ends: 13837 [2023-03-30 23:50:03,785 INFO L226 Difference]: Without dead ends: 9214 [2023-03-30 23:50:03,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:50:03,813 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 8094 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 9996 mSolverCounterSat, 2127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8094 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 12123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2127 IncrementalHoareTripleChecker+Valid, 9996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:50:03,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8094 Valid, 897 Invalid, 12123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2127 Valid, 9996 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-03-30 23:50:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9214 states. [2023-03-30 23:50:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9214 to 9059. [2023-03-30 23:50:04,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9059 states, 8892 states have (on average 1.4507422402159245) internal successors, (12900), 8909 states have internal predecessors, (12900), 38 states have call successors, (38), 38 states have call predecessors, (38), 128 states have return successors, (405), 111 states have call predecessors, (405), 37 states have call successors, (405) [2023-03-30 23:50:04,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9059 states to 9059 states and 13343 transitions. [2023-03-30 23:50:04,079 INFO L78 Accepts]: Start accepts. Automaton has 9059 states and 13343 transitions. Word has length 143 [2023-03-30 23:50:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:50:04,081 INFO L495 AbstractCegarLoop]: Abstraction has 9059 states and 13343 transitions. [2023-03-30 23:50:04,081 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) [2023-03-30 23:50:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 9059 states and 13343 transitions. [2023-03-30 23:50:04,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-03-30 23:50:04,091 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:50:04,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:04,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:50:04,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:50:04,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:50:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash -152277088, now seen corresponding path program 1 times [2023-03-30 23:50:04,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:50:04,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067683900] [2023-03-30 23:50:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:50:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:50:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:50:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:50:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:50:04,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:50:04,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067683900] [2023-03-30 23:50:04,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067683900] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:50:04,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:50:04,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:50:04,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575314206] [2023-03-30 23:50:04,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:50:04,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:50:04,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:50:04,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:50:04,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:50:04,587 INFO L87 Difference]: Start difference. First operand 9059 states and 13343 transitions. Second operand has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 4 states have internal predecessors, (182), 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 23:50:14,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:50:14,843 INFO L93 Difference]: Finished difference Result 27892 states and 42475 transitions. [2023-03-30 23:50:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:50:14,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 4 states have internal predecessors, (182), 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 188 [2023-03-30 23:50:14,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:50:14,906 INFO L225 Difference]: With dead ends: 27892 [2023-03-30 23:50:14,906 INFO L226 Difference]: Without dead ends: 18839 [2023-03-30 23:50:14,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:50:14,934 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 11592 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 9609 mSolverCounterSat, 2149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11592 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 11758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2149 IncrementalHoareTripleChecker+Valid, 9609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:50:14,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11592 Valid, 997 Invalid, 11758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2149 Valid, 9609 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-03-30 23:50:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18839 states. [2023-03-30 23:50:15,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18839 to 18417. [2023-03-30 23:50:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18417 states, 17885 states have (on average 1.2922560805143974) internal successors, (23112), 17964 states have internal predecessors, (23112), 74 states have call successors, (74), 74 states have call predecessors, (74), 457 states have return successors, (1799), 378 states have call predecessors, (1799), 73 states have call successors, (1799) [2023-03-30 23:50:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18417 states to 18417 states and 24985 transitions. [2023-03-30 23:50:15,360 INFO L78 Accepts]: Start accepts. Automaton has 18417 states and 24985 transitions. Word has length 188 [2023-03-30 23:50:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:50:15,362 INFO L495 AbstractCegarLoop]: Abstraction has 18417 states and 24985 transitions. [2023-03-30 23:50:15,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 4 states have internal predecessors, (182), 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 23:50:15,362 INFO L276 IsEmpty]: Start isEmpty. Operand 18417 states and 24985 transitions. [2023-03-30 23:50:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-03-30 23:50:15,365 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:50:15,365 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, 2, 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] [2023-03-30 23:50:15,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:50:15,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:50:15,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:50:15,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1750182696, now seen corresponding path program 1 times [2023-03-30 23:50:15,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:50:15,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229816073] [2023-03-30 23:50:15,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:50:15,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:50:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:50:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:50:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-30 23:50:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 94 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-30 23:50:15,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:50:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229816073] [2023-03-30 23:50:15,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229816073] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:50:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493682355] [2023-03-30 23:50:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:50:15,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:50:15,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:50:15,653 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 23:50:15,655 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 23:50:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:15,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:50:15,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:50:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-03-30 23:50:15,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:50:15,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493682355] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:50:15,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:50:15,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-03-30 23:50:15,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118477163] [2023-03-30 23:50:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:50:15,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:50:15,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:50:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:50:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:50:15,906 INFO L87 Difference]: Start difference. First operand 18417 states and 24985 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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 23:50:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:50:23,796 INFO L93 Difference]: Finished difference Result 55851 states and 78306 transitions. [2023-03-30 23:50:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-30 23:50:23,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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 207 [2023-03-30 23:50:23,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:50:23,878 INFO L225 Difference]: With dead ends: 55851 [2023-03-30 23:50:23,878 INFO L226 Difference]: Without dead ends: 37440 [2023-03-30 23:50:23,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:50:23,911 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 8211 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 8101 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8211 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 9109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 8101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:50:23,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8211 Valid, 941 Invalid, 9109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 8101 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-03-30 23:50:23,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37440 states. [2023-03-30 23:50:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37440 to 32598. [2023-03-30 23:50:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32598 states, 31421 states have (on average 1.2786353075968302) internal successors, (40176), 31627 states have internal predecessors, (40176), 128 states have call successors, (128), 128 states have call predecessors, (128), 1048 states have return successors, (4196), 842 states have call predecessors, (4196), 127 states have call successors, (4196) [2023-03-30 23:50:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32598 states to 32598 states and 44500 transitions. [2023-03-30 23:50:24,509 INFO L78 Accepts]: Start accepts. Automaton has 32598 states and 44500 transitions. Word has length 207 [2023-03-30 23:50:24,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:50:24,510 INFO L495 AbstractCegarLoop]: Abstraction has 32598 states and 44500 transitions. [2023-03-30 23:50:24,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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 23:50:24,511 INFO L276 IsEmpty]: Start isEmpty. Operand 32598 states and 44500 transitions. [2023-03-30 23:50:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-03-30 23:50:24,513 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:50:24,515 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:50:24,532 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 23:50:24,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:50:24,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:50:24,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:50:24,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1277890260, now seen corresponding path program 1 times [2023-03-30 23:50:24,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:50:24,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694016237] [2023-03-30 23:50:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:50:24,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:50:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:24,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:50:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:50:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:24,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-03-30 23:50:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 94 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-30 23:50:24,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:50:24,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694016237] [2023-03-30 23:50:24,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694016237] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:50:24,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765361844] [2023-03-30 23:50:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:50:24,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:50:24,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:50:25,009 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 23:50:25,044 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 23:50:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:50:25,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:50:25,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:50:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-03-30 23:50:25,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:50:25,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765361844] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:50:25,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:50:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-03-30 23:50:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756472171] [2023-03-30 23:50:25,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:50:25,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:50:25,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:50:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:50:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:50:25,305 INFO L87 Difference]: Start difference. First operand 32598 states and 44500 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 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 23:50:34,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:50:34,117 INFO L93 Difference]: Finished difference Result 98970 states and 145136 transitions. [2023-03-30 23:50:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-30 23:50:34,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 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 223 [2023-03-30 23:50:34,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:50:34,297 INFO L225 Difference]: With dead ends: 98970 [2023-03-30 23:50:34,297 INFO L226 Difference]: Without dead ends: 66378 [2023-03-30 23:50:34,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:50:34,352 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 4828 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 8381 mSolverCounterSat, 3378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 11759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3378 IncrementalHoareTripleChecker+Valid, 8381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:50:34,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4828 Valid, 1202 Invalid, 11759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3378 Valid, 8381 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-03-30 23:50:34,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66378 states. [2023-03-30 23:50:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66378 to 64908. [2023-03-30 23:50:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64908 states, 62345 states have (on average 1.2267864303472613) internal successors, (76484), 62835 states have internal predecessors, (76484), 254 states have call successors, (254), 254 states have call predecessors, (254), 2308 states have return successors, (13019), 1818 states have call predecessors, (13019), 253 states have call successors, (13019) [2023-03-30 23:50:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64908 states to 64908 states and 89757 transitions. [2023-03-30 23:50:35,838 INFO L78 Accepts]: Start accepts. Automaton has 64908 states and 89757 transitions. Word has length 223 [2023-03-30 23:50:35,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:50:35,838 INFO L495 AbstractCegarLoop]: Abstraction has 64908 states and 89757 transitions. [2023-03-30 23:50:35,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 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 23:50:35,838 INFO L276 IsEmpty]: Start isEmpty. Operand 64908 states and 89757 transitions. [2023-03-30 23:50:35,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-03-30 23:50:35,842 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:50:35,842 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, 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] [2023-03-30 23:50:35,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0