./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_productSimulator.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d64e6d161e5f8e99ac9692262fb570feef163d955f29392931b456d77e49162 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:29:14,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:29:14,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:29:14,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:29:14,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:29:14,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:29:14,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:29:14,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:29:14,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:29:14,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:29:14,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:29:14,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:29:14,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:29:14,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:29:14,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:29:14,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:29:14,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:29:14,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:29:14,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:29:14,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:29:14,310 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:29:14,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:29:14,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:29:14,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:29:14,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:29:14,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:29:14,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:29:14,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:29:14,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:29:14,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:29:14,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:29:14,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:29:14,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:29:14,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:29:14,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:29:14,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:29:14,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:29:14,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:29:14,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:29:14,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:29:14,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:29:14,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:29:14,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:29:14,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:29:14,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:29:14,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:29:14,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:29:14,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:29:14,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:29:14,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:29:14,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:29:14,353 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:29:14,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:29:14,353 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:29:14,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:29:14,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:29:14,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:29:14,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:29:14,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:29:14,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:29:14,354 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:29:14,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:29:14,355 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:29:14,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:29:14,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:29:14,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:29:14,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:29:14,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:29:14,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:29:14,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:29:14,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:29:14,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:29:14,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:29:14,357 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:29:14,358 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:29:14,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:29:14,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d64e6d161e5f8e99ac9692262fb570feef163d955f29392931b456d77e49162 [2022-07-13 17:29:14,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:29:14,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:29:14,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:29:14,543 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:29:14,543 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:29:14,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_productSimulator.cil.c [2022-07-13 17:29:14,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febfa2279/f18c7a7007064b4fab3e7febf436dc8f/FLAG664c36173 [2022-07-13 17:29:14,986 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:29:14,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_productSimulator.cil.c [2022-07-13 17:29:15,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febfa2279/f18c7a7007064b4fab3e7febf436dc8f/FLAG664c36173 [2022-07-13 17:29:15,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febfa2279/f18c7a7007064b4fab3e7febf436dc8f [2022-07-13 17:29:15,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:29:15,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:29:15,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:29:15,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:29:15,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:29:15,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:15,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a102c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15, skipping insertion in model container [2022-07-13 17:29:15,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:15,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:29:15,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:29:15,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_productSimulator.cil.c[4370,4383] [2022-07-13 17:29:15,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:29:15,750 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:29:15,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_productSimulator.cil.c[4370,4383] [2022-07-13 17:29:15,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:29:15,865 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:29:15,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15 WrapperNode [2022-07-13 17:29:15,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:29:15,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:29:15,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:29:15,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:29:15,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:15,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:15,944 INFO L137 Inliner]: procedures = 110, calls = 382, calls flagged for inlining = 33, calls inlined = 29, statements flattened = 1030 [2022-07-13 17:29:15,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:29:15,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:29:15,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:29:15,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:29:15,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:15,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:15,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:15,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:15,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:15,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:16,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:16,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:29:16,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:29:16,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:29:16,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:29:16,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (1/1) ... [2022-07-13 17:29:16,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:29:16,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:29:16,061 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) [2022-07-13 17:29:16,069 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 [2022-07-13 17:29:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-13 17:29:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-13 17:29:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-13 17:29:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-13 17:29:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-13 17:29:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-13 17:29:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2022-07-13 17:29:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2022-07-13 17:29:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2022-07-13 17:29:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2022-07-13 17:29:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 17:29:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 17:29:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2022-07-13 17:29:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2022-07-13 17:29:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-13 17:29:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-13 17:29:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-13 17:29:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-13 17:29:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-13 17:29:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-13 17:29:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2022-07-13 17:29:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2022-07-13 17:29:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-13 17:29:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-13 17:29:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-13 17:29:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-13 17:29:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-13 17:29:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-13 17:29:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:29:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-13 17:29:16,097 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-13 17:29:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-13 17:29:16,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-13 17:29:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-13 17:29:16,097 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-13 17:29:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2022-07-13 17:29:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2022-07-13 17:29:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 17:29:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 17:29:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-13 17:29:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-13 17:29:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-13 17:29:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-13 17:29:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-13 17:29:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-13 17:29:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2022-07-13 17:29:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2022-07-13 17:29:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2022-07-13 17:29:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2022-07-13 17:29:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-13 17:29:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-13 17:29:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2022-07-13 17:29:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2022-07-13 17:29:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-13 17:29:16,101 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-13 17:29:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-13 17:29:16,102 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-13 17:29:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-13 17:29:16,102 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-13 17:29:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-13 17:29:16,102 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-13 17:29:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:29:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-07-13 17:29:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-07-13 17:29:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-13 17:29:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-13 17:29:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2022-07-13 17:29:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2022-07-13 17:29:16,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:29:16,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:29:16,104 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-13 17:29:16,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-13 17:29:16,247 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:29:16,248 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:29:17,057 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:29:17,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:29:17,074 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:29:17,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:29:17 BoogieIcfgContainer [2022-07-13 17:29:17,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:29:17,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:29:17,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:29:17,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:29:17,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:29:15" (1/3) ... [2022-07-13 17:29:17,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7f208d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:29:17, skipping insertion in model container [2022-07-13 17:29:17,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:29:15" (2/3) ... [2022-07-13 17:29:17,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7f208d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:29:17, skipping insertion in model container [2022-07-13 17:29:17,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:29:17" (3/3) ... [2022-07-13 17:29:17,086 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_productSimulator.cil.c [2022-07-13 17:29:17,097 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:29:17,097 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:29:17,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:29:17,173 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@406306d5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31b40010 [2022-07-13 17:29:17,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:29:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 675 states, 514 states have (on average 1.6478599221789882) internal successors, (847), 541 states have internal predecessors, (847), 125 states have call successors, (125), 34 states have call predecessors, (125), 34 states have return successors, (125), 117 states have call predecessors, (125), 125 states have call successors, (125) [2022-07-13 17:29:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 17:29:17,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:17,203 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:17,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:17,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1079928857, now seen corresponding path program 1 times [2022-07-13 17:29:17,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:17,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701300799] [2022-07-13 17:29:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:17,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:29:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:29:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:29:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:29:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:29:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:29:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 17:29:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:29:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:29:17,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:17,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701300799] [2022-07-13 17:29:17,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701300799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:17,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:17,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:29:17,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889623625] [2022-07-13 17:29:17,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:17,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:29:17,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:29:17,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:29:17,926 INFO L87 Difference]: Start difference. First operand has 675 states, 514 states have (on average 1.6478599221789882) internal successors, (847), 541 states have internal predecessors, (847), 125 states have call successors, (125), 34 states have call predecessors, (125), 34 states have return successors, (125), 117 states have call predecessors, (125), 125 states have call successors, (125) Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:24,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:24,714 INFO L93 Difference]: Finished difference Result 1675 states and 2847 transitions. [2022-07-13 17:29:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:29:24,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 91 [2022-07-13 17:29:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:24,738 INFO L225 Difference]: With dead ends: 1675 [2022-07-13 17:29:24,738 INFO L226 Difference]: Without dead ends: 1008 [2022-07-13 17:29:24,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:29:24,752 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 1172 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 4851 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 5228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 4851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:24,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 2220 Invalid, 5228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [377 Valid, 4851 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-13 17:29:24,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-13 17:29:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 667. [2022-07-13 17:29:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.639763779527559) internal successors, (833), 533 states have internal predecessors, (833), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-07-13 17:29:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1078 transitions. [2022-07-13 17:29:24,894 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1078 transitions. Word has length 91 [2022-07-13 17:29:24,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:24,894 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1078 transitions. [2022-07-13 17:29:24,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:24,895 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1078 transitions. [2022-07-13 17:29:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 17:29:24,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:24,906 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:24,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 17:29:24,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:24,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1333921498, now seen corresponding path program 1 times [2022-07-13 17:29:24,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:24,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21020013] [2022-07-13 17:29:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:24,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:29:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:29:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:29:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:24,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:29:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:29:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:29:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:29:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:29:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:29:25,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:25,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21020013] [2022-07-13 17:29:25,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21020013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:25,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:25,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:29:25,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750830934] [2022-07-13 17:29:25,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:25,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:29:25,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:25,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:29:25,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:25,316 INFO L87 Difference]: Start difference. First operand 667 states and 1078 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:30,494 INFO L93 Difference]: Finished difference Result 1638 states and 2779 transitions. [2022-07-13 17:29:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:29:30,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2022-07-13 17:29:30,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:30,501 INFO L225 Difference]: With dead ends: 1638 [2022-07-13 17:29:30,502 INFO L226 Difference]: Without dead ends: 1008 [2022-07-13 17:29:30,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:29:30,509 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 2251 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 3357 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2358 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 4155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 3357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:30,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2358 Valid, 1848 Invalid, 4155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 3357 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-13 17:29:30,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-13 17:29:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 667. [2022-07-13 17:29:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6377952755905512) internal successors, (832), 533 states have internal predecessors, (832), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-07-13 17:29:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1077 transitions. [2022-07-13 17:29:30,561 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1077 transitions. Word has length 94 [2022-07-13 17:29:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:30,563 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1077 transitions. [2022-07-13 17:29:30,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:30,564 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1077 transitions. [2022-07-13 17:29:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 17:29:30,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:30,566 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:30,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 17:29:30,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1138356604, now seen corresponding path program 1 times [2022-07-13 17:29:30,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:30,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96539858] [2022-07-13 17:29:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:30,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:29:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:29:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:29:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:29:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:29:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:29:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:29:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:29:30,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:30,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96539858] [2022-07-13 17:29:30,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96539858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:30,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:30,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:29:30,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321904890] [2022-07-13 17:29:30,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:30,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:29:30,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:30,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:29:30,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:30,871 INFO L87 Difference]: Start difference. First operand 667 states and 1077 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:36,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:36,079 INFO L93 Difference]: Finished difference Result 1638 states and 2778 transitions. [2022-07-13 17:29:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:29:36,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 95 [2022-07-13 17:29:36,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:36,085 INFO L225 Difference]: With dead ends: 1638 [2022-07-13 17:29:36,085 INFO L226 Difference]: Without dead ends: 1008 [2022-07-13 17:29:36,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:29:36,088 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 1707 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3489 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 4090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 3489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:36,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 1824 Invalid, 4090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 3489 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-13 17:29:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-13 17:29:36,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 667. [2022-07-13 17:29:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6358267716535433) internal successors, (831), 533 states have internal predecessors, (831), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-07-13 17:29:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1076 transitions. [2022-07-13 17:29:36,135 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1076 transitions. Word has length 95 [2022-07-13 17:29:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:36,135 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1076 transitions. [2022-07-13 17:29:36,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1076 transitions. [2022-07-13 17:29:36,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 17:29:36,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:36,137 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:36,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 17:29:36,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:36,138 INFO L85 PathProgramCache]: Analyzing trace with hash 258613534, now seen corresponding path program 1 times [2022-07-13 17:29:36,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:36,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585266781] [2022-07-13 17:29:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:36,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:29:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:29:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:29:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:29:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:29:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:29:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:29:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:29:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:29:36,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:36,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585266781] [2022-07-13 17:29:36,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585266781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:36,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:36,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:29:36,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447606837] [2022-07-13 17:29:36,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:36,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:29:36,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:36,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:29:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:36,485 INFO L87 Difference]: Start difference. First operand 667 states and 1076 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:41,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:41,463 INFO L93 Difference]: Finished difference Result 1638 states and 2777 transitions. [2022-07-13 17:29:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:29:41,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2022-07-13 17:29:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:41,470 INFO L225 Difference]: With dead ends: 1638 [2022-07-13 17:29:41,470 INFO L226 Difference]: Without dead ends: 1008 [2022-07-13 17:29:41,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:29:41,473 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 1705 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 3430 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 4007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:41,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 1870 Invalid, 4007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 3430 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-13 17:29:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-13 17:29:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 667. [2022-07-13 17:29:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6338582677165354) internal successors, (830), 533 states have internal predecessors, (830), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-07-13 17:29:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1075 transitions. [2022-07-13 17:29:41,516 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1075 transitions. Word has length 96 [2022-07-13 17:29:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:41,517 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1075 transitions. [2022-07-13 17:29:41,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1075 transitions. [2022-07-13 17:29:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 17:29:41,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:41,518 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:41,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 17:29:41,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:41,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:41,519 INFO L85 PathProgramCache]: Analyzing trace with hash -355816512, now seen corresponding path program 1 times [2022-07-13 17:29:41,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:41,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58523924] [2022-07-13 17:29:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:41,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:29:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:29:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:29:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:29:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:29:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:29:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:29:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:29:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:29:41,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:41,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58523924] [2022-07-13 17:29:41,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58523924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:41,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:41,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:29:41,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135518063] [2022-07-13 17:29:41,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:41,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:29:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:29:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:41,804 INFO L87 Difference]: Start difference. First operand 667 states and 1075 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:46,825 INFO L93 Difference]: Finished difference Result 1638 states and 2776 transitions. [2022-07-13 17:29:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:29:46,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 97 [2022-07-13 17:29:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:46,829 INFO L225 Difference]: With dead ends: 1638 [2022-07-13 17:29:46,830 INFO L226 Difference]: Without dead ends: 1008 [2022-07-13 17:29:46,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:29:46,832 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 1702 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 3452 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 4037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 3452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:46,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 1859 Invalid, 4037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 3452 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-13 17:29:46,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-13 17:29:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 667. [2022-07-13 17:29:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6318897637795275) internal successors, (829), 533 states have internal predecessors, (829), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-07-13 17:29:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1074 transitions. [2022-07-13 17:29:46,874 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1074 transitions. Word has length 97 [2022-07-13 17:29:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:46,875 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1074 transitions. [2022-07-13 17:29:46,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1074 transitions. [2022-07-13 17:29:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 17:29:46,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:46,876 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:46,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 17:29:46,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:46,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1335477406, now seen corresponding path program 1 times [2022-07-13 17:29:46,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:46,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149786971] [2022-07-13 17:29:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:46,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:29:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:46,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:46,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:29:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:46,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:29:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:46,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:29:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:46,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:29:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:46,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 17:29:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:29:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:29:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:29:47,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:47,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149786971] [2022-07-13 17:29:47,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149786971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:47,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:47,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:29:47,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291559221] [2022-07-13 17:29:47,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:47,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:29:47,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:29:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:47,158 INFO L87 Difference]: Start difference. First operand 667 states and 1074 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:52,088 INFO L93 Difference]: Finished difference Result 1638 states and 2775 transitions. [2022-07-13 17:29:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:29:52,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 98 [2022-07-13 17:29:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:52,093 INFO L225 Difference]: With dead ends: 1638 [2022-07-13 17:29:52,093 INFO L226 Difference]: Without dead ends: 1008 [2022-07-13 17:29:52,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:29:52,096 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 1698 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 3420 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 4008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 3420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:52,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 1847 Invalid, 4008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 3420 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-13 17:29:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-13 17:29:52,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 667. [2022-07-13 17:29:52,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6299212598425197) internal successors, (828), 533 states have internal predecessors, (828), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-07-13 17:29:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1073 transitions. [2022-07-13 17:29:52,152 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1073 transitions. Word has length 98 [2022-07-13 17:29:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:52,152 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1073 transitions. [2022-07-13 17:29:52,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:29:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1073 transitions. [2022-07-13 17:29:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 17:29:52,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:52,154 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:52,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:29:52,154 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:52,155 INFO L85 PathProgramCache]: Analyzing trace with hash -752392700, now seen corresponding path program 1 times [2022-07-13 17:29:52,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:52,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516777758] [2022-07-13 17:29:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:52,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:29:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:29:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:29:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:29:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:29:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:29:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:29:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:29:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:29:52,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:52,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516777758] [2022-07-13 17:29:52,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516777758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:52,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:52,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:29:52,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827939178] [2022-07-13 17:29:52,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:52,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:29:52,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:29:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:29:52,487 INFO L87 Difference]: Start difference. First operand 667 states and 1073 transitions. Second operand has 11 states, 10 states have (on average 6.4) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:29:59,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:29:59,343 INFO L93 Difference]: Finished difference Result 1615 states and 2725 transitions. [2022-07-13 17:29:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 17:29:59,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 99 [2022-07-13 17:29:59,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:29:59,349 INFO L225 Difference]: With dead ends: 1615 [2022-07-13 17:29:59,349 INFO L226 Difference]: Without dead ends: 1034 [2022-07-13 17:29:59,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2022-07-13 17:29:59,353 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 2844 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 6878 mSolverCounterSat, 1068 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 7946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1068 IncrementalHoareTripleChecker+Valid, 6878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:29:59,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2887 Valid, 2653 Invalid, 7946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1068 Valid, 6878 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-13 17:29:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2022-07-13 17:29:59,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 680. [2022-07-13 17:29:59,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 518 states have (on average 1.6274131274131274) internal successors, (843), 545 states have internal predecessors, (843), 126 states have call successors, (126), 34 states have call predecessors, (126), 35 states have return successors, (123), 117 states have call predecessors, (123), 121 states have call successors, (123) [2022-07-13 17:29:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1092 transitions. [2022-07-13 17:29:59,426 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1092 transitions. Word has length 99 [2022-07-13 17:29:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:29:59,426 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1092 transitions. [2022-07-13 17:29:59,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:29:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1092 transitions. [2022-07-13 17:29:59,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 17:29:59,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:29:59,428 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:29:59,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:29:59,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:29:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:29:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1617041285, now seen corresponding path program 1 times [2022-07-13 17:29:59,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:29:59,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922286049] [2022-07-13 17:29:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:29:59,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:29:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:29:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:29:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:29:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:29:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:29:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:29:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:29:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:29:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:29:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:29:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:29:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:29:59,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:29:59,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922286049] [2022-07-13 17:29:59,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922286049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:29:59,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:29:59,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:29:59,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200782510] [2022-07-13 17:29:59,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:29:59,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:29:59,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:29:59,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:29:59,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:29:59,690 INFO L87 Difference]: Start difference. First operand 680 states and 1092 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:04,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:30:04,680 INFO L93 Difference]: Finished difference Result 1629 states and 2748 transitions. [2022-07-13 17:30:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:30:04,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 99 [2022-07-13 17:30:04,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:30:04,697 INFO L225 Difference]: With dead ends: 1629 [2022-07-13 17:30:04,697 INFO L226 Difference]: Without dead ends: 1030 [2022-07-13 17:30:04,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:30:04,700 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 1736 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 3464 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 4120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 3464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:30:04,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 1796 Invalid, 4120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 3464 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-13 17:30:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-13 17:30:04,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 680. [2022-07-13 17:30:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 518 states have (on average 1.6177606177606179) internal successors, (838), 545 states have internal predecessors, (838), 126 states have call successors, (126), 34 states have call predecessors, (126), 35 states have return successors, (123), 117 states have call predecessors, (123), 121 states have call successors, (123) [2022-07-13 17:30:04,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1087 transitions. [2022-07-13 17:30:04,761 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1087 transitions. Word has length 99 [2022-07-13 17:30:04,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:30:04,762 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1087 transitions. [2022-07-13 17:30:04,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1087 transitions. [2022-07-13 17:30:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 17:30:04,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:30:04,764 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:30:04,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:30:04,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:30:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:30:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash -445353755, now seen corresponding path program 1 times [2022-07-13 17:30:04,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:30:04,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995629533] [2022-07-13 17:30:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:04,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:30:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:04,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:30:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:04,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:30:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:30:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:30:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:30:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:04,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:30:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:30:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:30:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:30:05,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:30:05,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995629533] [2022-07-13 17:30:05,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995629533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:30:05,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:30:05,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:30:05,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598585967] [2022-07-13 17:30:05,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:30:05,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:30:05,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:30:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:30:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:30:05,022 INFO L87 Difference]: Start difference. First operand 680 states and 1087 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:10,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:30:10,052 INFO L93 Difference]: Finished difference Result 1629 states and 2743 transitions. [2022-07-13 17:30:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:30:10,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2022-07-13 17:30:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:30:10,058 INFO L225 Difference]: With dead ends: 1629 [2022-07-13 17:30:10,058 INFO L226 Difference]: Without dead ends: 1030 [2022-07-13 17:30:10,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:30:10,061 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 1738 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 3461 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 4099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 3461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:30:10,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 1806 Invalid, 4099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 3461 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-13 17:30:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-13 17:30:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 680. [2022-07-13 17:30:10,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 518 states have (on average 1.6081081081081081) internal successors, (833), 545 states have internal predecessors, (833), 126 states have call successors, (126), 34 states have call predecessors, (126), 35 states have return successors, (123), 117 states have call predecessors, (123), 121 states have call successors, (123) [2022-07-13 17:30:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1082 transitions. [2022-07-13 17:30:10,124 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1082 transitions. Word has length 100 [2022-07-13 17:30:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:30:10,124 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1082 transitions. [2022-07-13 17:30:10,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1082 transitions. [2022-07-13 17:30:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 17:30:10,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:30:10,127 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:30:10,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:30:10,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:30:10,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:30:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1576859744, now seen corresponding path program 1 times [2022-07-13 17:30:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:30:10,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204022858] [2022-07-13 17:30:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:10,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:30:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:30:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:30:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:30:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:30:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:30:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:30:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:30:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:30:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:30:10,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:30:10,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204022858] [2022-07-13 17:30:10,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204022858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:30:10,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:30:10,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:30:10,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090170029] [2022-07-13 17:30:10,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:30:10,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:30:10,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:30:10,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:30:10,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:30:10,389 INFO L87 Difference]: Start difference. First operand 680 states and 1082 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:30:16,151 INFO L93 Difference]: Finished difference Result 1629 states and 2738 transitions. [2022-07-13 17:30:16,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:30:16,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-07-13 17:30:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:30:16,156 INFO L225 Difference]: With dead ends: 1629 [2022-07-13 17:30:16,156 INFO L226 Difference]: Without dead ends: 1030 [2022-07-13 17:30:16,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:30:16,159 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 1204 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 3568 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 3997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 3568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:30:16,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1814 Invalid, 3997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 3568 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-13 17:30:16,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-13 17:30:16,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 680. [2022-07-13 17:30:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 518 states have (on average 1.5984555984555984) internal successors, (828), 545 states have internal predecessors, (828), 126 states have call successors, (126), 34 states have call predecessors, (126), 35 states have return successors, (123), 117 states have call predecessors, (123), 121 states have call successors, (123) [2022-07-13 17:30:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1077 transitions. [2022-07-13 17:30:16,241 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1077 transitions. Word has length 101 [2022-07-13 17:30:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:30:16,242 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1077 transitions. [2022-07-13 17:30:16,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1077 transitions. [2022-07-13 17:30:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 17:30:16,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:30:16,243 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:30:16,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 17:30:16,244 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:30:16,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:30:16,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1807909056, now seen corresponding path program 1 times [2022-07-13 17:30:16,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:30:16,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700481302] [2022-07-13 17:30:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:16,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:30:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:30:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:30:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:30:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:30:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:30:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:30:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:30:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:30:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:30:16,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:30:16,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700481302] [2022-07-13 17:30:16,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700481302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:30:16,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:30:16,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:30:16,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572966623] [2022-07-13 17:30:16,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:30:16,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:30:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:30:16,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:30:16,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:30:16,576 INFO L87 Difference]: Start difference. First operand 680 states and 1077 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:30:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:30:23,171 INFO L93 Difference]: Finished difference Result 1621 states and 2715 transitions. [2022-07-13 17:30:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:30:23,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 102 [2022-07-13 17:30:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:30:23,177 INFO L225 Difference]: With dead ends: 1621 [2022-07-13 17:30:23,177 INFO L226 Difference]: Without dead ends: 1037 [2022-07-13 17:30:23,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:30:23,179 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 1758 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 6709 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 7317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 6709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:30:23,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 2686 Invalid, 7317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 6709 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-13 17:30:23,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-07-13 17:30:23,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 680. [2022-07-13 17:30:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 518 states have (on average 1.5965250965250966) internal successors, (827), 545 states have internal predecessors, (827), 126 states have call successors, (126), 34 states have call predecessors, (126), 35 states have return successors, (123), 117 states have call predecessors, (123), 121 states have call successors, (123) [2022-07-13 17:30:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1076 transitions. [2022-07-13 17:30:23,248 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1076 transitions. Word has length 102 [2022-07-13 17:30:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:30:23,249 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1076 transitions. [2022-07-13 17:30:23,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:30:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1076 transitions. [2022-07-13 17:30:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 17:30:23,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:30:23,250 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:30:23,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:30:23,251 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:30:23,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:30:23,251 INFO L85 PathProgramCache]: Analyzing trace with hash 379391072, now seen corresponding path program 1 times [2022-07-13 17:30:23,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:30:23,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458067666] [2022-07-13 17:30:23,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:23,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:30:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:30:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:30:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:30:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:30:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:30:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:30:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:30:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:30:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:30:23,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:30:23,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458067666] [2022-07-13 17:30:23,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458067666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:30:23,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:30:23,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:30:23,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052936684] [2022-07-13 17:30:23,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:30:23,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:30:23,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:30:23,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:30:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:30:23,500 INFO L87 Difference]: Start difference. First operand 680 states and 1076 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:30:28,464 INFO L93 Difference]: Finished difference Result 1629 states and 2730 transitions. [2022-07-13 17:30:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:30:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-07-13 17:30:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:30:28,469 INFO L225 Difference]: With dead ends: 1629 [2022-07-13 17:30:28,469 INFO L226 Difference]: Without dead ends: 1030 [2022-07-13 17:30:28,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:30:28,471 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 1750 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 3919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:30:28,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 1826 Invalid, 3919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 3302 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-13 17:30:28,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-13 17:30:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 680. [2022-07-13 17:30:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 518 states have (on average 1.5868725868725868) internal successors, (822), 545 states have internal predecessors, (822), 126 states have call successors, (126), 34 states have call predecessors, (126), 35 states have return successors, (123), 117 states have call predecessors, (123), 121 states have call successors, (123) [2022-07-13 17:30:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1071 transitions. [2022-07-13 17:30:28,543 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1071 transitions. Word has length 102 [2022-07-13 17:30:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:30:28,544 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1071 transitions. [2022-07-13 17:30:28,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1071 transitions. [2022-07-13 17:30:28,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 17:30:28,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:30:28,545 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:30:28,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:30:28,546 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:30:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:30:28,546 INFO L85 PathProgramCache]: Analyzing trace with hash -122738531, now seen corresponding path program 1 times [2022-07-13 17:30:28,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:30:28,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483085952] [2022-07-13 17:30:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:28,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:30:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:30:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:30:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:30:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:30:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:30:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:30:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:30:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:30:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:30:28,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:30:28,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483085952] [2022-07-13 17:30:28,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483085952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:30:28,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:30:28,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:30:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363354420] [2022-07-13 17:30:28,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:30:28,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:30:28,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:30:28,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:30:28,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:30:28,839 INFO L87 Difference]: Start difference. First operand 680 states and 1071 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:30:35,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:30:35,393 INFO L93 Difference]: Finished difference Result 1642 states and 2740 transitions. [2022-07-13 17:30:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:30:35,402 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2022-07-13 17:30:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:30:35,406 INFO L225 Difference]: With dead ends: 1642 [2022-07-13 17:30:35,406 INFO L226 Difference]: Without dead ends: 1055 [2022-07-13 17:30:35,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:30:35,409 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 1764 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 6703 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 7318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 6703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:30:35,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1877 Valid, 2651 Invalid, 7318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 6703 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-13 17:30:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-07-13 17:30:35,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 683. [2022-07-13 17:30:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 521 states have (on average 1.581573896353167) internal successors, (824), 548 states have internal predecessors, (824), 126 states have call successors, (126), 34 states have call predecessors, (126), 35 states have return successors, (123), 117 states have call predecessors, (123), 121 states have call successors, (123) [2022-07-13 17:30:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1073 transitions. [2022-07-13 17:30:35,508 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1073 transitions. Word has length 103 [2022-07-13 17:30:35,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:30:35,508 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1073 transitions. [2022-07-13 17:30:35,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:30:35,509 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1073 transitions. [2022-07-13 17:30:35,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 17:30:35,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:30:35,512 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:30:35,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 17:30:35,512 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:30:35,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:30:35,513 INFO L85 PathProgramCache]: Analyzing trace with hash -728144965, now seen corresponding path program 1 times [2022-07-13 17:30:35,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:30:35,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992967313] [2022-07-13 17:30:35,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:35,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:30:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:30:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:30:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:30:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:30:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:30:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:30:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:30:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:30:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:30:35,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:30:35,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992967313] [2022-07-13 17:30:35,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992967313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:30:35,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:30:35,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:30:35,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393788539] [2022-07-13 17:30:35,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:30:35,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:30:35,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:30:35,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:30:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:30:35,774 INFO L87 Difference]: Start difference. First operand 683 states and 1073 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:30:40,628 INFO L93 Difference]: Finished difference Result 1638 states and 2731 transitions. [2022-07-13 17:30:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:30:40,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2022-07-13 17:30:40,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:30:40,632 INFO L225 Difference]: With dead ends: 1638 [2022-07-13 17:30:40,633 INFO L226 Difference]: Without dead ends: 1036 [2022-07-13 17:30:40,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:30:40,635 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 2291 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 3231 mSolverCounterSat, 836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 4067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 3231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:30:40,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 1804 Invalid, 4067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 3231 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-13 17:30:40,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-07-13 17:30:40,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 683. [2022-07-13 17:30:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 521 states have (on average 1.5719769673704416) internal successors, (819), 548 states have internal predecessors, (819), 126 states have call successors, (126), 34 states have call predecessors, (126), 35 states have return successors, (123), 117 states have call predecessors, (123), 121 states have call successors, (123) [2022-07-13 17:30:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1068 transitions. [2022-07-13 17:30:40,729 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1068 transitions. Word has length 103 [2022-07-13 17:30:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:30:40,729 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1068 transitions. [2022-07-13 17:30:40,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1068 transitions. [2022-07-13 17:30:40,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 17:30:40,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:30:40,731 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:30:40,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 17:30:40,731 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:30:40,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:30:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash -250562117, now seen corresponding path program 1 times [2022-07-13 17:30:40,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:30:40,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393374092] [2022-07-13 17:30:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:40,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:30:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:30:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:30:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:30:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:30:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:30:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:30:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:30:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:30:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:30:40,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:30:40,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393374092] [2022-07-13 17:30:40,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393374092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:30:40,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:30:40,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:30:40,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385930032] [2022-07-13 17:30:40,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:30:40,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:30:40,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:30:40,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:30:40,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:30:40,994 INFO L87 Difference]: Start difference. First operand 683 states and 1068 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:30:47,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:30:47,541 INFO L93 Difference]: Finished difference Result 1648 states and 2737 transitions. [2022-07-13 17:30:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:30:47,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 104 [2022-07-13 17:30:47,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:30:47,546 INFO L225 Difference]: With dead ends: 1648 [2022-07-13 17:30:47,547 INFO L226 Difference]: Without dead ends: 1061 [2022-07-13 17:30:47,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:30:47,549 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 1751 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 6692 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 7306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 6692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:30:47,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 2626 Invalid, 7306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 6692 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-13 17:30:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-07-13 17:30:47,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 687. [2022-07-13 17:30:47,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 525 states have (on average 1.5657142857142856) internal successors, (822), 552 states have internal predecessors, (822), 126 states have call successors, (126), 34 states have call predecessors, (126), 35 states have return successors, (123), 117 states have call predecessors, (123), 121 states have call successors, (123) [2022-07-13 17:30:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1071 transitions. [2022-07-13 17:30:47,633 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1071 transitions. Word has length 104 [2022-07-13 17:30:47,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:30:47,633 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 1071 transitions. [2022-07-13 17:30:47,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:30:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1071 transitions. [2022-07-13 17:30:47,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 17:30:47,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:30:47,635 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:30:47,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:30:47,636 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:30:47,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:30:47,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1971174363, now seen corresponding path program 1 times [2022-07-13 17:30:47,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:30:47,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539829860] [2022-07-13 17:30:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:47,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:30:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:30:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:30:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:30:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:30:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:30:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:30:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:30:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:30:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:30:47,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:30:47,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539829860] [2022-07-13 17:30:47,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539829860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:30:47,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:30:47,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:30:47,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056147636] [2022-07-13 17:30:47,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:30:47,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:30:47,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:30:47,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:30:47,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:30:47,886 INFO L87 Difference]: Start difference. First operand 687 states and 1071 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:52,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:30:52,978 INFO L93 Difference]: Finished difference Result 1686 states and 2776 transitions. [2022-07-13 17:30:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:30:52,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2022-07-13 17:30:52,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:30:52,983 INFO L225 Difference]: With dead ends: 1686 [2022-07-13 17:30:52,983 INFO L226 Difference]: Without dead ends: 1016 [2022-07-13 17:30:52,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:30:52,985 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 1668 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 3322 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 3322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:30:52,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 1837 Invalid, 3911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 3322 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-13 17:30:52,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2022-07-13 17:30:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 668. [2022-07-13 17:30:53,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 509 states have (on average 1.5717092337917484) internal successors, (800), 534 states have internal predecessors, (800), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-07-13 17:30:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1045 transitions. [2022-07-13 17:30:53,070 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1045 transitions. Word has length 104 [2022-07-13 17:30:53,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:30:53,070 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1045 transitions. [2022-07-13 17:30:53,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:30:53,071 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1045 transitions. [2022-07-13 17:30:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 17:30:53,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:30:53,072 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:30:53,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:30:53,073 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:30:53,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:30:53,073 INFO L85 PathProgramCache]: Analyzing trace with hash -746628296, now seen corresponding path program 1 times [2022-07-13 17:30:53,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:30:53,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706218015] [2022-07-13 17:30:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:30:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:30:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:30:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:30:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:30:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:30:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:30:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:30:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:30:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:30:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:30:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:30:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:30:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:30:53,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:30:53,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706218015] [2022-07-13 17:30:53,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706218015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:30:53,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:30:53,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:30:53,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59919979] [2022-07-13 17:30:53,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:30:53,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:30:53,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:30:53,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:30:53,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:30:53,369 INFO L87 Difference]: Start difference. First operand 668 states and 1045 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:31:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:31:00,332 INFO L93 Difference]: Finished difference Result 1621 states and 2691 transitions. [2022-07-13 17:31:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:31:00,333 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 105 [2022-07-13 17:31:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:31:00,337 INFO L225 Difference]: With dead ends: 1621 [2022-07-13 17:31:00,337 INFO L226 Difference]: Without dead ends: 1037 [2022-07-13 17:31:00,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:31:00,339 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 1184 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 6748 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 7139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 6748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:31:00,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 2612 Invalid, 7139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 6748 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-13 17:31:00,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-07-13 17:31:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 673. [2022-07-13 17:31:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 514 states have (on average 1.566147859922179) internal successors, (805), 539 states have internal predecessors, (805), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-07-13 17:31:00,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1050 transitions. [2022-07-13 17:31:00,428 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1050 transitions. Word has length 105 [2022-07-13 17:31:00,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:31:00,429 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1050 transitions. [2022-07-13 17:31:00,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:31:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1050 transitions. [2022-07-13 17:31:00,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 17:31:00,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:31:00,430 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:31:00,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:31:00,431 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:31:00,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:31:00,431 INFO L85 PathProgramCache]: Analyzing trace with hash 171682984, now seen corresponding path program 1 times [2022-07-13 17:31:00,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:31:00,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179666856] [2022-07-13 17:31:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:31:00,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:31:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:31:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:31:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:31:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:31:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:31:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:31:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:31:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:31:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:31:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:31:00,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:31:00,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179666856] [2022-07-13 17:31:00,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179666856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:31:00,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:31:00,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:31:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251771015] [2022-07-13 17:31:00,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:31:00,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:31:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:31:00,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:31:00,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:31:00,688 INFO L87 Difference]: Start difference. First operand 673 states and 1050 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:31:05,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:31:05,733 INFO L93 Difference]: Finished difference Result 1619 states and 2686 transitions. [2022-07-13 17:31:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:31:05,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2022-07-13 17:31:05,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:31:05,738 INFO L225 Difference]: With dead ends: 1619 [2022-07-13 17:31:05,738 INFO L226 Difference]: Without dead ends: 1014 [2022-07-13 17:31:05,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:31:05,740 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 1701 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 3304 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 3912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 3304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:31:05,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 1801 Invalid, 3912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 3304 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-13 17:31:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-07-13 17:31:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 673. [2022-07-13 17:31:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 514 states have (on average 1.5583657587548638) internal successors, (801), 539 states have internal predecessors, (801), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-07-13 17:31:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1046 transitions. [2022-07-13 17:31:05,870 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1046 transitions. Word has length 106 [2022-07-13 17:31:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:31:05,870 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1046 transitions. [2022-07-13 17:31:05,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:31:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1046 transitions. [2022-07-13 17:31:05,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 17:31:05,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:31:05,872 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:31:05,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:31:05,872 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:31:05,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:31:05,872 INFO L85 PathProgramCache]: Analyzing trace with hash 524771366, now seen corresponding path program 1 times [2022-07-13 17:31:05,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:31:05,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246012398] [2022-07-13 17:31:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:31:05,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:31:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:31:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:31:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:31:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:31:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:31:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:05,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:31:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:05,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:31:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:31:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:06,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:06,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:31:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:06,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:31:06,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:31:06,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246012398] [2022-07-13 17:31:06,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246012398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:31:06,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:31:06,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:31:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739870075] [2022-07-13 17:31:06,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:31:06,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:31:06,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:31:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:31:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:31:06,160 INFO L87 Difference]: Start difference. First operand 673 states and 1046 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:31:15,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:31:15,263 INFO L93 Difference]: Finished difference Result 2564 states and 4305 transitions. [2022-07-13 17:31:15,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:31:15,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 106 [2022-07-13 17:31:15,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:31:15,271 INFO L225 Difference]: With dead ends: 2564 [2022-07-13 17:31:15,271 INFO L226 Difference]: Without dead ends: 1988 [2022-07-13 17:31:15,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:31:15,273 INFO L413 NwaCegarLoop]: 1820 mSDtfsCounter, 6208 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 4385 mSolverCounterSat, 2419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6294 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 6804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2419 IncrementalHoareTripleChecker+Valid, 4385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:31:15,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6294 Valid, 2720 Invalid, 6804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2419 Valid, 4385 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-13 17:31:15,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2022-07-13 17:31:15,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1302. [2022-07-13 17:31:15,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1002 states have (on average 1.56187624750499) internal successors, (1565), 1045 states have internal predecessors, (1565), 234 states have call successors, (234), 66 states have call predecessors, (234), 65 states have return successors, (229), 223 states have call predecessors, (229), 229 states have call successors, (229) [2022-07-13 17:31:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2028 transitions. [2022-07-13 17:31:15,482 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2028 transitions. Word has length 106 [2022-07-13 17:31:15,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:31:15,482 INFO L495 AbstractCegarLoop]: Abstraction has 1302 states and 2028 transitions. [2022-07-13 17:31:15,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:31:15,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2028 transitions. [2022-07-13 17:31:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 17:31:15,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:31:15,484 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:31:15,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:31:15,485 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:31:15,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:31:15,485 INFO L85 PathProgramCache]: Analyzing trace with hash -463267461, now seen corresponding path program 1 times [2022-07-13 17:31:15,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:31:15,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105989836] [2022-07-13 17:31:15,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:31:15,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:31:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:31:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:31:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:31:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:31:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:31:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:31:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:31:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:31:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:31:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:31:15,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:31:15,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105989836] [2022-07-13 17:31:15,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105989836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:31:15,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:31:15,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:31:15,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919953146] [2022-07-13 17:31:15,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:31:15,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:31:15,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:31:15,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:31:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:31:15,807 INFO L87 Difference]: Start difference. First operand 1302 states and 2028 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 7 states have internal predecessors, (72), 5 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:31:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:31:31,200 INFO L93 Difference]: Finished difference Result 4906 states and 8807 transitions. [2022-07-13 17:31:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 17:31:31,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 7 states have internal predecessors, (72), 5 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 107 [2022-07-13 17:31:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:31:31,229 INFO L225 Difference]: With dead ends: 4906 [2022-07-13 17:31:31,229 INFO L226 Difference]: Without dead ends: 4333 [2022-07-13 17:31:31,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2022-07-13 17:31:31,233 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 3572 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 6663 mSolverCounterSat, 1930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3712 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 8593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1930 IncrementalHoareTripleChecker+Valid, 6663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:31:31,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3712 Valid, 2253 Invalid, 8593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1930 Valid, 6663 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-07-13 17:31:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2022-07-13 17:31:31,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 2627. [2022-07-13 17:31:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 1959 states have (on average 1.5926493108728943) internal successors, (3120), 2059 states have internal predecessors, (3120), 535 states have call successors, (535), 123 states have call predecessors, (535), 132 states have return successors, (620), 524 states have call predecessors, (620), 530 states have call successors, (620) [2022-07-13 17:31:31,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4275 transitions. [2022-07-13 17:31:31,784 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4275 transitions. Word has length 107 [2022-07-13 17:31:31,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:31:31,785 INFO L495 AbstractCegarLoop]: Abstraction has 2627 states and 4275 transitions. [2022-07-13 17:31:31,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 7 states have internal predecessors, (72), 5 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 17:31:31,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4275 transitions. [2022-07-13 17:31:31,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 17:31:31,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:31:31,791 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:31:31,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:31:31,791 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:31:31,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:31:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1907178862, now seen corresponding path program 1 times [2022-07-13 17:31:31,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:31:31,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182508466] [2022-07-13 17:31:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:31:31,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:31:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:31:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:31:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:31:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:31:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:31:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:31:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:31:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:31:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:31:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:31:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:31:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:31:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:31:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:31:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 17:31:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:31:32,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:31:32,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182508466] [2022-07-13 17:31:32,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182508466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:31:32,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:31:32,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-13 17:31:32,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746849607] [2022-07-13 17:31:32,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:31:32,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 17:31:32,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:31:32,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 17:31:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:31:32,295 INFO L87 Difference]: Start difference. First operand 2627 states and 4275 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 9 states have internal predecessors, (102), 4 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (20), 8 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 17:31:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:31:42,725 INFO L93 Difference]: Finished difference Result 7336 states and 13058 transitions. [2022-07-13 17:31:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 17:31:42,725 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 9 states have internal predecessors, (102), 4 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (20), 8 states have call predecessors, (20), 4 states have call successors, (20) Word has length 151 [2022-07-13 17:31:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:31:42,743 INFO L225 Difference]: With dead ends: 7336 [2022-07-13 17:31:42,743 INFO L226 Difference]: Without dead ends: 4886 [2022-07-13 17:31:42,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=350, Invalid=982, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 17:31:42,751 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 4343 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 9396 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4343 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 11521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 9396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:31:42,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4343 Valid, 3564 Invalid, 11521 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2125 Valid, 9396 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-07-13 17:31:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2022-07-13 17:31:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 2667. [2022-07-13 17:31:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 1987 states have (on average 1.584297936587821) internal successors, (3148), 2087 states have internal predecessors, (3148), 535 states have call successors, (535), 123 states have call predecessors, (535), 144 states have return successors, (652), 536 states have call predecessors, (652), 530 states have call successors, (652) [2022-07-13 17:31:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4335 transitions. [2022-07-13 17:31:43,309 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4335 transitions. Word has length 151 [2022-07-13 17:31:43,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:31:43,309 INFO L495 AbstractCegarLoop]: Abstraction has 2667 states and 4335 transitions. [2022-07-13 17:31:43,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 9 states have internal predecessors, (102), 4 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (20), 8 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 17:31:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4335 transitions. [2022-07-13 17:31:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 17:31:43,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:31:43,316 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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] [2022-07-13 17:31:43,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 17:31:43,316 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:31:43,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:31:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1505919072, now seen corresponding path program 1 times [2022-07-13 17:31:43,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:31:43,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193538981] [2022-07-13 17:31:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:31:43,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:31:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:31:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:31:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:31:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:31:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:31:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:31:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:31:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:31:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:31:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:31:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:31:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:31:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:31:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:31:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:31:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:31:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:31:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 17:31:43,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:31:43,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193538981] [2022-07-13 17:31:43,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193538981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:31:43,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:31:43,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:31:43,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873590642] [2022-07-13 17:31:43,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:31:43,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:31:43,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:31:43,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:31:43,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:31:43,777 INFO L87 Difference]: Start difference. First operand 2667 states and 4335 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (22), 7 states have call predecessors, (22), 5 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2022-07-13 17:31:59,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:31:59,216 INFO L93 Difference]: Finished difference Result 11928 states and 21839 transitions. [2022-07-13 17:31:59,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 17:31:59,217 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (22), 7 states have call predecessors, (22), 5 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) Word has length 156 [2022-07-13 17:31:59,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:31:59,254 INFO L225 Difference]: With dead ends: 11928 [2022-07-13 17:31:59,254 INFO L226 Difference]: Without dead ends: 9438 [2022-07-13 17:31:59,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 17:31:59,267 INFO L413 NwaCegarLoop]: 1678 mSDtfsCounter, 9047 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 4564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9047 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 9933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4564 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:31:59,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9047 Valid, 3071 Invalid, 9933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4564 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-07-13 17:31:59,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2022-07-13 17:32:00,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 5009. [2022-07-13 17:32:00,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5009 states, 3729 states have (on average 1.6098149637972647) internal successors, (6003), 3921 states have internal predecessors, (6003), 1014 states have call successors, (1014), 238 states have call predecessors, (1014), 265 states have return successors, (1228), 1009 states have call predecessors, (1228), 1009 states have call successors, (1228) [2022-07-13 17:32:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5009 states to 5009 states and 8245 transitions. [2022-07-13 17:32:00,435 INFO L78 Accepts]: Start accepts. Automaton has 5009 states and 8245 transitions. Word has length 156 [2022-07-13 17:32:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:32:00,435 INFO L495 AbstractCegarLoop]: Abstraction has 5009 states and 8245 transitions. [2022-07-13 17:32:00,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (22), 7 states have call predecessors, (22), 5 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2022-07-13 17:32:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5009 states and 8245 transitions. [2022-07-13 17:32:00,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 17:32:00,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:32:00,446 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2022-07-13 17:32:00,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 17:32:00,447 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:32:00,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:32:00,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1208691304, now seen corresponding path program 1 times [2022-07-13 17:32:00,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:32:00,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549630511] [2022-07-13 17:32:00,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:32:00,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:32:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:32:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:32:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:32:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:32:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:32:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:32:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:32:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:32:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:32:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:32:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:32:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:32:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:32:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:32:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:32:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 17:32:00,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:32:00,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549630511] [2022-07-13 17:32:00,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549630511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:32:00,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:32:00,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:32:00,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301072031] [2022-07-13 17:32:00,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:32:00,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:32:00,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:32:00,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:32:00,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:32:00,889 INFO L87 Difference]: Start difference. First operand 5009 states and 8245 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 17:32:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:32:18,413 INFO L93 Difference]: Finished difference Result 22229 states and 40951 transitions. [2022-07-13 17:32:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 17:32:18,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 157 [2022-07-13 17:32:18,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:32:18,497 INFO L225 Difference]: With dead ends: 22229 [2022-07-13 17:32:18,497 INFO L226 Difference]: Without dead ends: 17418 [2022-07-13 17:32:18,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2022-07-13 17:32:18,520 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 4902 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 3208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4918 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 7533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3208 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:32:18,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4918 Valid, 2675 Invalid, 7533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3208 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-07-13 17:32:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17418 states. [2022-07-13 17:32:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17418 to 9811. [2022-07-13 17:32:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9811 states, 7271 states have (on average 1.6175216613945813) internal successors, (11761), 7645 states have internal predecessors, (11761), 1988 states have call successors, (1988), 452 states have call predecessors, (1988), 551 states have return successors, (2530), 2017 states have call predecessors, (2530), 1983 states have call successors, (2530) [2022-07-13 17:32:20,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9811 states to 9811 states and 16279 transitions. [2022-07-13 17:32:20,976 INFO L78 Accepts]: Start accepts. Automaton has 9811 states and 16279 transitions. Word has length 157 [2022-07-13 17:32:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:32:20,977 INFO L495 AbstractCegarLoop]: Abstraction has 9811 states and 16279 transitions. [2022-07-13 17:32:20,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 17:32:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 9811 states and 16279 transitions. [2022-07-13 17:32:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 17:32:20,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:32:20,990 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2022-07-13 17:32:20,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 17:32:20,991 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:32:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:32:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash -507091430, now seen corresponding path program 1 times [2022-07-13 17:32:20,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:32:20,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607290488] [2022-07-13 17:32:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:32:20,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:32:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:32:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:32:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:32:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:32:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:32:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:32:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:32:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:32:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:32:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:32:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:32:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:32:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:32:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:32:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:32:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 17:32:21,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:32:21,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607290488] [2022-07-13 17:32:21,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607290488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:32:21,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:32:21,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:32:21,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438161963] [2022-07-13 17:32:21,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:32:21,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:32:21,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:32:21,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:32:21,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:32:21,503 INFO L87 Difference]: Start difference. First operand 9811 states and 16279 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 17:32:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:32:36,572 INFO L93 Difference]: Finished difference Result 26996 states and 49883 transitions. [2022-07-13 17:32:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 17:32:36,573 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 157 [2022-07-13 17:32:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:32:36,678 INFO L225 Difference]: With dead ends: 26996 [2022-07-13 17:32:36,678 INFO L226 Difference]: Without dead ends: 17381 [2022-07-13 17:32:36,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2022-07-13 17:32:36,717 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 2493 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 5479 mSolverCounterSat, 1294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2507 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 6773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1294 IncrementalHoareTripleChecker+Valid, 5479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:32:36,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2507 Valid, 2575 Invalid, 6773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1294 Valid, 5479 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-07-13 17:32:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17381 states. [2022-07-13 17:32:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17381 to 9875. [2022-07-13 17:32:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9875 states, 7319 states have (on average 1.6134717857630825) internal successors, (11809), 7693 states have internal predecessors, (11809), 1988 states have call successors, (1988), 468 states have call predecessors, (1988), 567 states have return successors, (2546), 2017 states have call predecessors, (2546), 1983 states have call successors, (2546) [2022-07-13 17:32:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9875 states to 9875 states and 16343 transitions. [2022-07-13 17:32:39,534 INFO L78 Accepts]: Start accepts. Automaton has 9875 states and 16343 transitions. Word has length 157 [2022-07-13 17:32:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:32:39,534 INFO L495 AbstractCegarLoop]: Abstraction has 9875 states and 16343 transitions. [2022-07-13 17:32:39,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 17:32:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 9875 states and 16343 transitions. [2022-07-13 17:32:39,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 17:32:39,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:32:39,545 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2022-07-13 17:32:39,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 17:32:39,545 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:32:39,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:32:39,545 INFO L85 PathProgramCache]: Analyzing trace with hash 145303796, now seen corresponding path program 1 times [2022-07-13 17:32:39,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:32:39,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851667907] [2022-07-13 17:32:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:32:39,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:32:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:32:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:32:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:32:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:32:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:32:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:32:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:32:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:32:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:32:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:32:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:32:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:32:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:32:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:32:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:32:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 17:32:40,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:32:40,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851667907] [2022-07-13 17:32:40,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851667907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:32:40,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:32:40,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:32:40,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849272695] [2022-07-13 17:32:40,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:32:40,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:32:40,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:32:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:32:40,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:32:40,080 INFO L87 Difference]: Start difference. First operand 9875 states and 16343 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 17:32:55,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:32:55,540 INFO L93 Difference]: Finished difference Result 27140 states and 49915 transitions. [2022-07-13 17:32:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 17:32:55,540 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 159 [2022-07-13 17:32:55,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:32:55,607 INFO L225 Difference]: With dead ends: 27140 [2022-07-13 17:32:55,607 INFO L226 Difference]: Without dead ends: 17461 [2022-07-13 17:32:55,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2022-07-13 17:32:55,635 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 3039 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 5242 mSolverCounterSat, 1515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 6757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1515 IncrementalHoareTripleChecker+Valid, 5242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:32:55,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 2561 Invalid, 6757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1515 Valid, 5242 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-13 17:32:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17461 states. [2022-07-13 17:32:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17461 to 9955. [2022-07-13 17:32:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9955 states, 7383 states have (on average 1.6081538669917377) internal successors, (11873), 7757 states have internal predecessors, (11873), 1988 states have call successors, (1988), 484 states have call predecessors, (1988), 583 states have return successors, (2562), 2017 states have call predecessors, (2562), 1983 states have call successors, (2562) [2022-07-13 17:32:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9955 states to 9955 states and 16423 transitions. [2022-07-13 17:32:58,139 INFO L78 Accepts]: Start accepts. Automaton has 9955 states and 16423 transitions. Word has length 159 [2022-07-13 17:32:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:32:58,139 INFO L495 AbstractCegarLoop]: Abstraction has 9955 states and 16423 transitions. [2022-07-13 17:32:58,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 17:32:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 9955 states and 16423 transitions. [2022-07-13 17:32:58,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 17:32:58,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:32:58,150 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2022-07-13 17:32:58,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 17:32:58,150 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:32:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:32:58,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1763942618, now seen corresponding path program 1 times [2022-07-13 17:32:58,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:32:58,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204599739] [2022-07-13 17:32:58,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:32:58,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:32:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 17:32:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:32:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:32:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:32:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:32:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:32:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:32:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:32:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:32:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:32:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:32:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:32:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:32:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:32:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:32:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:32:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:32:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 17:32:58,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:32:58,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204599739] [2022-07-13 17:32:58,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204599739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:32:58,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:32:58,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:32:58,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533386321] [2022-07-13 17:32:58,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:32:58,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:32:58,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:32:58,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:32:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:32:58,637 INFO L87 Difference]: Start difference. First operand 9955 states and 16423 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 6 states have internal predecessors, (105), 4 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21)