./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_product24.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 e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:52:20,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:52:20,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:52:20,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:52:20,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:52:20,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:52:20,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:52:20,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:52:20,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:52:20,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:52:20,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:52:20,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:52:20,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:52:20,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:52:20,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:52:20,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:52:20,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:52:20,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:52:20,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:52:20,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:52:20,204 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:52:20,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:52:20,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:52:20,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:52:20,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:52:20,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:52:20,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:52:20,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:52:20,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:52:20,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:52:20,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:52:20,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:52:20,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:52:20,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:52:20,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:52:20,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:52:20,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:52:20,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:52:20,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:52:20,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:52:20,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:52:20,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:52:20,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:52:20,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:52:20,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:52:20,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:52:20,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:52:20,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:52:20,256 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:52:20,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:52:20,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:52:20,257 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:52:20,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:52:20,258 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:52:20,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:52:20,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:52:20,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:52:20,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:52:20,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:52:20,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:52:20,260 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:52:20,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:52:20,260 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:52:20,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:52:20,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:52:20,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:52:20,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:52:20,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:52:20,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:52:20,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:52:20,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:52:20,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:52:20,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:52:20,263 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:52:20,263 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:52:20,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:52:20,263 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda [2022-07-19 16:52:20,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:52:20,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:52:20,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:52:20,538 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:52:20,539 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:52:20,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2022-07-19 16:52:20,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed8457675/9d231a75d6db4962a8bb4c7c697be030/FLAGf55f8ecf9 [2022-07-19 16:52:21,079 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:52:21,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2022-07-19 16:52:21,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed8457675/9d231a75d6db4962a8bb4c7c697be030/FLAGf55f8ecf9 [2022-07-19 16:52:21,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed8457675/9d231a75d6db4962a8bb4c7c697be030 [2022-07-19 16:52:21,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:52:21,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:52:21,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:52:21,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:52:21,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:52:21,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:52:21" (1/1) ... [2022-07-19 16:52:21,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f557746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:21, skipping insertion in model container [2022-07-19 16:52:21,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:52:21" (1/1) ... [2022-07-19 16:52:21,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:52:21,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:52:21,921 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_product24.cil.c[63703,63716] [2022-07-19 16:52:21,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:52:21,991 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:52:22,050 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_product24.cil.c[63703,63716] [2022-07-19 16:52:22,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:52:22,096 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:52:22,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22 WrapperNode [2022-07-19 16:52:22,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:52:22,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:52:22,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:52:22,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:52:22,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (1/1) ... [2022-07-19 16:52:22,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (1/1) ... [2022-07-19 16:52:22,185 INFO L137 Inliner]: procedures = 98, calls = 353, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 937 [2022-07-19 16:52:22,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:52:22,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:52:22,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:52:22,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:52:22,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (1/1) ... [2022-07-19 16:52:22,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (1/1) ... [2022-07-19 16:52:22,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (1/1) ... [2022-07-19 16:52:22,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (1/1) ... [2022-07-19 16:52:22,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (1/1) ... [2022-07-19 16:52:22,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (1/1) ... [2022-07-19 16:52:22,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (1/1) ... [2022-07-19 16:52:22,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:52:22,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:52:22,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:52:22,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:52:22,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (1/1) ... [2022-07-19 16:52:22,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:52:22,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:52:22,312 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) [2022-07-19 16:52:22,337 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 [2022-07-19 16:52:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-19 16:52:22,352 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-19 16:52:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:52:22,352 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:52:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:52:22,352 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:52:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:52:22,353 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:52:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:52:22,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:52:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:52:22,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:52:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-19 16:52:22,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-19 16:52:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-19 16:52:22,354 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-19 16:52:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:52:22,355 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:52:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:52:22,355 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:52:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:52:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-19 16:52:22,356 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-19 16:52:22,356 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-19 16:52:22,356 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-19 16:52:22,356 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-19 16:52:22,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-19 16:52:22,356 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:52:22,356 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:52:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:52:22,357 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:52:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-19 16:52:22,357 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-19 16:52:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:52:22,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:52:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:52:22,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:52:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:52:22,358 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:52:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:52:22,358 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:52:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:52:22,359 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:52:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:52:22,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:52:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:52:22,359 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:52:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:52:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:52:22,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:52:22,360 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-19 16:52:22,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-19 16:52:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:52:22,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:52:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:52:22,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:52:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-19 16:52:22,363 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-19 16:52:22,582 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:52:22,583 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:52:23,507 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:52:23,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:52:23,522 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:52:23,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:52:23 BoogieIcfgContainer [2022-07-19 16:52:23,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:52:23,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:52:23,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:52:23,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:52:23,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:52:21" (1/3) ... [2022-07-19 16:52:23,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf8ebff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:52:23, skipping insertion in model container [2022-07-19 16:52:23,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:52:22" (2/3) ... [2022-07-19 16:52:23,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf8ebff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:52:23, skipping insertion in model container [2022-07-19 16:52:23,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:52:23" (3/3) ... [2022-07-19 16:52:23,534 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.c [2022-07-19 16:52:23,546 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:52:23,547 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:52:23,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:52:23,622 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@39fd019b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c08e4ad [2022-07-19 16:52:23,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:52:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 462 states have (on average 1.6753246753246753) internal successors, (774), 485 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-19 16:52:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 16:52:23,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:23,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:23,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:23,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1390945328, now seen corresponding path program 1 times [2022-07-19 16:52:23,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:23,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678868457] [2022-07-19 16:52:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:23,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:52:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 16:52:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:24,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:24,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678868457] [2022-07-19 16:52:24,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678868457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:24,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:24,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273816396] [2022-07-19 16:52:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:24,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:24,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:24,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:24,472 INFO L87 Difference]: Start difference. First operand has 596 states, 462 states have (on average 1.6753246753246753) internal successors, (774), 485 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:29,335 INFO L93 Difference]: Finished difference Result 1335 states and 2237 transitions. [2022-07-19 16:52:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:29,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-07-19 16:52:29,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:29,357 INFO L225 Difference]: With dead ends: 1335 [2022-07-19 16:52:29,357 INFO L226 Difference]: Without dead ends: 751 [2022-07-19 16:52:29,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:29,371 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 704 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:29,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1768 Invalid, 2570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-19 16:52:29,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-19 16:52:29,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 588. [2022-07-19 16:52:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 456 states have (on average 1.6710526315789473) internal successors, (762), 477 states have internal predecessors, (762), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-19 16:52:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 967 transitions. [2022-07-19 16:52:29,534 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 967 transitions. Word has length 60 [2022-07-19 16:52:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:29,534 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 967 transitions. [2022-07-19 16:52:29,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:29,535 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 967 transitions. [2022-07-19 16:52:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 16:52:29,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:29,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:29,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 16:52:29,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash -169141434, now seen corresponding path program 1 times [2022-07-19 16:52:29,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:29,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856541859] [2022-07-19 16:52:29,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:29,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:29,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:29,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:52:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:29,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:29,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:29,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856541859] [2022-07-19 16:52:29,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856541859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:29,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:29,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:29,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494415954] [2022-07-19 16:52:29,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:29,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:29,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:29,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:29,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:29,904 INFO L87 Difference]: Start difference. First operand 588 states and 967 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:33,808 INFO L93 Difference]: Finished difference Result 1321 states and 2203 transitions. [2022-07-19 16:52:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-07-19 16:52:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:33,815 INFO L225 Difference]: With dead ends: 1321 [2022-07-19 16:52:33,815 INFO L226 Difference]: Without dead ends: 751 [2022-07-19 16:52:33,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:33,820 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 1171 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:33,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 1725 Invalid, 2546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:52:33,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-19 16:52:33,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 588. [2022-07-19 16:52:33,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 456 states have (on average 1.668859649122807) internal successors, (761), 477 states have internal predecessors, (761), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-19 16:52:33,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 966 transitions. [2022-07-19 16:52:33,881 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 966 transitions. Word has length 63 [2022-07-19 16:52:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:33,882 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 966 transitions. [2022-07-19 16:52:33,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:33,882 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 966 transitions. [2022-07-19 16:52:33,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 16:52:33,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:33,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:33,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 16:52:33,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:33,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:33,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1831827845, now seen corresponding path program 1 times [2022-07-19 16:52:33,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:33,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850847597] [2022-07-19 16:52:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:33,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:52:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:34,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:34,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850847597] [2022-07-19 16:52:34,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850847597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:34,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:34,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:34,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768689119] [2022-07-19 16:52:34,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:34,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:34,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:34,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:34,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:34,215 INFO L87 Difference]: Start difference. First operand 588 states and 966 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:37,986 INFO L93 Difference]: Finished difference Result 1321 states and 2202 transitions. [2022-07-19 16:52:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:37,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-07-19 16:52:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:37,995 INFO L225 Difference]: With dead ends: 1321 [2022-07-19 16:52:37,995 INFO L226 Difference]: Without dead ends: 751 [2022-07-19 16:52:37,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:37,999 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 698 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:38,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1719 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:52:38,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-19 16:52:38,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 588. [2022-07-19 16:52:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 456 states have (on average 1.6666666666666667) internal successors, (760), 477 states have internal predecessors, (760), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-19 16:52:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 965 transitions. [2022-07-19 16:52:38,052 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 965 transitions. Word has length 64 [2022-07-19 16:52:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:38,052 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 965 transitions. [2022-07-19 16:52:38,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 965 transitions. [2022-07-19 16:52:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 16:52:38,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:38,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:38,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 16:52:38,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:38,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:38,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1497307746, now seen corresponding path program 1 times [2022-07-19 16:52:38,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:38,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819885175] [2022-07-19 16:52:38,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:38,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 16:52:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:52:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:38,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:38,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819885175] [2022-07-19 16:52:38,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819885175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:38,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:38,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:38,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704076472] [2022-07-19 16:52:38,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:38,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:38,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:38,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:38,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:38,404 INFO L87 Difference]: Start difference. First operand 588 states and 965 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:42,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:42,425 INFO L93 Difference]: Finished difference Result 1321 states and 2201 transitions. [2022-07-19 16:52:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:42,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 16:52:42,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:42,429 INFO L225 Difference]: With dead ends: 1321 [2022-07-19 16:52:42,430 INFO L226 Difference]: Without dead ends: 751 [2022-07-19 16:52:42,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:42,433 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 695 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:42,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1733 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 16:52:42,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-19 16:52:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 588. [2022-07-19 16:52:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 477 states have internal predecessors, (759), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-19 16:52:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 964 transitions. [2022-07-19 16:52:42,484 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 964 transitions. Word has length 65 [2022-07-19 16:52:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:42,485 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 964 transitions. [2022-07-19 16:52:42,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 964 transitions. [2022-07-19 16:52:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 16:52:42,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:42,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:42,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 16:52:42,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash 659135447, now seen corresponding path program 1 times [2022-07-19 16:52:42,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:42,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267162420] [2022-07-19 16:52:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:42,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 16:52:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:52:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:42,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267162420] [2022-07-19 16:52:42,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267162420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:42,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:42,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:42,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56164290] [2022-07-19 16:52:42,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:42,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:42,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:42,812 INFO L87 Difference]: Start difference. First operand 588 states and 964 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:46,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:46,233 INFO L93 Difference]: Finished difference Result 1321 states and 2200 transitions. [2022-07-19 16:52:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:46,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 16:52:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:46,238 INFO L225 Difference]: With dead ends: 1321 [2022-07-19 16:52:46,238 INFO L226 Difference]: Without dead ends: 751 [2022-07-19 16:52:46,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:46,242 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1164 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:46,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1702 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 16:52:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-19 16:52:46,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 588. [2022-07-19 16:52:46,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 456 states have (on average 1.662280701754386) internal successors, (758), 477 states have internal predecessors, (758), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-19 16:52:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 963 transitions. [2022-07-19 16:52:46,293 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 963 transitions. Word has length 66 [2022-07-19 16:52:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:46,293 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 963 transitions. [2022-07-19 16:52:46,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 963 transitions. [2022-07-19 16:52:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 16:52:46,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:46,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:46,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 16:52:46,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:46,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:46,296 INFO L85 PathProgramCache]: Analyzing trace with hash -516562562, now seen corresponding path program 1 times [2022-07-19 16:52:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:46,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895070970] [2022-07-19 16:52:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:46,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:52:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:46,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:46,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895070970] [2022-07-19 16:52:46,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895070970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:46,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:46,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:52:46,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029923260] [2022-07-19 16:52:46,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:46,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:52:46,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:46,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:52:46,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:52:46,625 INFO L87 Difference]: Start difference. First operand 588 states and 963 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:51,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:51,753 INFO L93 Difference]: Finished difference Result 1298 states and 2150 transitions. [2022-07-19 16:52:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:52:51,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-07-19 16:52:51,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:51,760 INFO L225 Difference]: With dead ends: 1298 [2022-07-19 16:52:51,761 INFO L226 Difference]: Without dead ends: 777 [2022-07-19 16:52:51,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:52:51,766 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 803 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 4827 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 4980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 4827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:51,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2695 Invalid, 4980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 4827 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-19 16:52:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-07-19 16:52:51,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 601. [2022-07-19 16:52:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.6587982832618027) internal successors, (773), 489 states have internal predecessors, (773), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-19 16:52:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 982 transitions. [2022-07-19 16:52:51,833 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 982 transitions. Word has length 67 [2022-07-19 16:52:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:51,834 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 982 transitions. [2022-07-19 16:52:51,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 982 transitions. [2022-07-19 16:52:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 16:52:51,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:51,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:51,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 16:52:51,838 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:51,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash -757102691, now seen corresponding path program 1 times [2022-07-19 16:52:51,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:51,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573615265] [2022-07-19 16:52:51,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:51,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:51,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:51,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:51,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:52,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:52:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:52,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:52,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573615265] [2022-07-19 16:52:52,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573615265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:52,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:52,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064187424] [2022-07-19 16:52:52,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:52,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:52,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:52,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:52,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:52,189 INFO L87 Difference]: Start difference. First operand 601 states and 982 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:55,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:55,838 INFO L93 Difference]: Finished difference Result 1312 states and 2173 transitions. [2022-07-19 16:52:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:52:55,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-07-19 16:52:55,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:55,843 INFO L225 Difference]: With dead ends: 1312 [2022-07-19 16:52:55,844 INFO L226 Difference]: Without dead ends: 773 [2022-07-19 16:52:55,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:55,847 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 758 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 2568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:55,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1651 Invalid, 2568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:52:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-19 16:52:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 601. [2022-07-19 16:52:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.648068669527897) internal successors, (768), 489 states have internal predecessors, (768), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-19 16:52:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 977 transitions. [2022-07-19 16:52:55,901 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 977 transitions. Word has length 67 [2022-07-19 16:52:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:55,901 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 977 transitions. [2022-07-19 16:52:55,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 977 transitions. [2022-07-19 16:52:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 16:52:55,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:55,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:55,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 16:52:55,904 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1269161536, now seen corresponding path program 1 times [2022-07-19 16:52:55,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:55,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068204063] [2022-07-19 16:52:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:55,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:55,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:56,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:56,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:56,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 16:52:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:56,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:56,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:56,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:56,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068204063] [2022-07-19 16:52:56,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068204063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:56,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:56,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220109511] [2022-07-19 16:52:56,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:56,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:56,185 INFO L87 Difference]: Start difference. First operand 601 states and 977 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:59,631 INFO L93 Difference]: Finished difference Result 1312 states and 2168 transitions. [2022-07-19 16:52:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:52:59,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-19 16:52:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:59,636 INFO L225 Difference]: With dead ends: 1312 [2022-07-19 16:52:59,636 INFO L226 Difference]: Without dead ends: 773 [2022-07-19 16:52:59,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:59,639 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 757 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:59,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1666 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:52:59,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-19 16:52:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 601. [2022-07-19 16:52:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.6373390557939915) internal successors, (763), 489 states have internal predecessors, (763), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-19 16:52:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 972 transitions. [2022-07-19 16:52:59,694 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 972 transitions. Word has length 68 [2022-07-19 16:52:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:59,695 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 972 transitions. [2022-07-19 16:52:59,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 972 transitions. [2022-07-19 16:52:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 16:52:59,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:59,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:59,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 16:52:59,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:59,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1710327234, now seen corresponding path program 1 times [2022-07-19 16:52:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:59,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752343658] [2022-07-19 16:52:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:59,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:59,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:59,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:59,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:52:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:59,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:59,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:59,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752343658] [2022-07-19 16:52:59,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752343658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:59,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:59,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:59,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880507689] [2022-07-19 16:52:59,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:59,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:59,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:59,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:59,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:59,984 INFO L87 Difference]: Start difference. First operand 601 states and 972 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:53:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:03,448 INFO L93 Difference]: Finished difference Result 1312 states and 2163 transitions. [2022-07-19 16:53:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:53:03,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-07-19 16:53:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:03,453 INFO L225 Difference]: With dead ends: 1312 [2022-07-19 16:53:03,453 INFO L226 Difference]: Without dead ends: 773 [2022-07-19 16:53:03,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:53:03,456 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 767 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:03,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1646 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:53:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-19 16:53:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 601. [2022-07-19 16:53:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.6266094420600858) internal successors, (758), 489 states have internal predecessors, (758), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-19 16:53:03,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 967 transitions. [2022-07-19 16:53:03,526 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 967 transitions. Word has length 69 [2022-07-19 16:53:03,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:03,526 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 967 transitions. [2022-07-19 16:53:03,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:53:03,526 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 967 transitions. [2022-07-19 16:53:03,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 16:53:03,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:03,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:03,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 16:53:03,528 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1166970523, now seen corresponding path program 1 times [2022-07-19 16:53:03,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:03,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17000228] [2022-07-19 16:53:03,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:03,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:53:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:53:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:03,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:03,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17000228] [2022-07-19 16:53:03,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17000228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:03,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:03,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:53:03,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908603756] [2022-07-19 16:53:03,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:03,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:53:03,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:03,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:53:03,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:53:03,839 INFO L87 Difference]: Start difference. First operand 601 states and 967 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:53:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:08,489 INFO L93 Difference]: Finished difference Result 1304 states and 2140 transitions. [2022-07-19 16:53:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:53:08,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-07-19 16:53:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:08,493 INFO L225 Difference]: With dead ends: 1304 [2022-07-19 16:53:08,494 INFO L226 Difference]: Without dead ends: 780 [2022-07-19 16:53:08,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:53:08,496 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1252 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 4560 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 4900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 4560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:08,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 2550 Invalid, 4900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 4560 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 16:53:08,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-07-19 16:53:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 601. [2022-07-19 16:53:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.6244635193133048) internal successors, (757), 489 states have internal predecessors, (757), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-19 16:53:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 966 transitions. [2022-07-19 16:53:08,552 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 966 transitions. Word has length 70 [2022-07-19 16:53:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:08,552 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 966 transitions. [2022-07-19 16:53:08,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:53:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 966 transitions. [2022-07-19 16:53:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 16:53:08,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:08,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:08,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 16:53:08,555 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:08,555 INFO L85 PathProgramCache]: Analyzing trace with hash 258078789, now seen corresponding path program 1 times [2022-07-19 16:53:08,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:08,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511682871] [2022-07-19 16:53:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:08,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:08,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:08,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:53:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:53:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:08,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:08,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511682871] [2022-07-19 16:53:08,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511682871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:08,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:08,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:53:08,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704402983] [2022-07-19 16:53:08,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:08,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:53:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:08,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:53:08,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:53:08,854 INFO L87 Difference]: Start difference. First operand 601 states and 966 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:53:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:12,485 INFO L93 Difference]: Finished difference Result 1312 states and 2155 transitions. [2022-07-19 16:53:12,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:53:12,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-19 16:53:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:12,489 INFO L225 Difference]: With dead ends: 1312 [2022-07-19 16:53:12,489 INFO L226 Difference]: Without dead ends: 773 [2022-07-19 16:53:12,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:53:12,491 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 765 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:12,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1626 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:53:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-19 16:53:12,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 601. [2022-07-19 16:53:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.613733905579399) internal successors, (752), 489 states have internal predecessors, (752), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-19 16:53:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 961 transitions. [2022-07-19 16:53:12,561 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 961 transitions. Word has length 70 [2022-07-19 16:53:12,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:12,562 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 961 transitions. [2022-07-19 16:53:12,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:53:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 961 transitions. [2022-07-19 16:53:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 16:53:12,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:12,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:12,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 16:53:12,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash -683133371, now seen corresponding path program 1 times [2022-07-19 16:53:12,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:12,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424545454] [2022-07-19 16:53:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:53:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:12,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:53:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:12,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:12,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424545454] [2022-07-19 16:53:12,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424545454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:12,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:12,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:53:12,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890204336] [2022-07-19 16:53:12,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:12,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:53:12,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:12,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:53:12,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:53:12,892 INFO L87 Difference]: Start difference. First operand 601 states and 961 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:53:17,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:17,435 INFO L93 Difference]: Finished difference Result 1325 states and 2165 transitions. [2022-07-19 16:53:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:53:17,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2022-07-19 16:53:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:17,439 INFO L225 Difference]: With dead ends: 1325 [2022-07-19 16:53:17,439 INFO L226 Difference]: Without dead ends: 798 [2022-07-19 16:53:17,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:53:17,441 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 1246 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 4537 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 4873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 4537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:17,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 2579 Invalid, 4873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 4537 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 16:53:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-07-19 16:53:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 604. [2022-07-19 16:53:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 469 states have (on average 1.607675906183369) internal successors, (754), 492 states have internal predecessors, (754), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-19 16:53:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 963 transitions. [2022-07-19 16:53:17,501 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 963 transitions. Word has length 71 [2022-07-19 16:53:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:17,501 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 963 transitions. [2022-07-19 16:53:17,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:53:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 963 transitions. [2022-07-19 16:53:17,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 16:53:17,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:17,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:17,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 16:53:17,503 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:17,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:17,504 INFO L85 PathProgramCache]: Analyzing trace with hash 239534055, now seen corresponding path program 1 times [2022-07-19 16:53:17,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:17,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236920129] [2022-07-19 16:53:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:17,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:17,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:17,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:53:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:17,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:53:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:17,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:17,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:17,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236920129] [2022-07-19 16:53:17,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236920129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:17,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:17,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:53:17,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861336664] [2022-07-19 16:53:17,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:17,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:53:17,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:53:17,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:53:17,794 INFO L87 Difference]: Start difference. First operand 604 states and 963 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:53:21,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:21,255 INFO L93 Difference]: Finished difference Result 1321 states and 2156 transitions. [2022-07-19 16:53:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:53:21,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-07-19 16:53:21,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:21,259 INFO L225 Difference]: With dead ends: 1321 [2022-07-19 16:53:21,259 INFO L226 Difference]: Without dead ends: 779 [2022-07-19 16:53:21,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:53:21,261 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 764 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:21,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1635 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:53:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-07-19 16:53:21,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 604. [2022-07-19 16:53:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 469 states have (on average 1.5970149253731343) internal successors, (749), 492 states have internal predecessors, (749), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-19 16:53:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 958 transitions. [2022-07-19 16:53:21,334 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 958 transitions. Word has length 71 [2022-07-19 16:53:21,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:21,335 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 958 transitions. [2022-07-19 16:53:21,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:53:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 958 transitions. [2022-07-19 16:53:21,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 16:53:21,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:21,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:21,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 16:53:21,337 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash 342549610, now seen corresponding path program 1 times [2022-07-19 16:53:21,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:21,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910446994] [2022-07-19 16:53:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:21,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:21,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:21,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:21,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:21,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:53:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:21,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:53:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:21,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:21,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910446994] [2022-07-19 16:53:21,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910446994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:21,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:21,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:53:21,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615716496] [2022-07-19 16:53:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:21,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:53:21,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:53:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:53:21,652 INFO L87 Difference]: Start difference. First operand 604 states and 958 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:53:26,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:26,118 INFO L93 Difference]: Finished difference Result 1331 states and 2162 transitions. [2022-07-19 16:53:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:53:26,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-19 16:53:26,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:26,121 INFO L225 Difference]: With dead ends: 1331 [2022-07-19 16:53:26,121 INFO L226 Difference]: Without dead ends: 804 [2022-07-19 16:53:26,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:53:26,124 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1240 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 4499 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 4838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 4499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:26,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 2563 Invalid, 4838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 4499 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 16:53:26,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-07-19 16:53:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 608. [2022-07-19 16:53:26,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 473 states have (on average 1.5898520084566596) internal successors, (752), 496 states have internal predecessors, (752), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-19 16:53:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 961 transitions. [2022-07-19 16:53:26,184 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 961 transitions. Word has length 72 [2022-07-19 16:53:26,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:26,185 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 961 transitions. [2022-07-19 16:53:26,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:53:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 961 transitions. [2022-07-19 16:53:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 16:53:26,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:26,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:26,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 16:53:26,186 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:26,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1716131402, now seen corresponding path program 1 times [2022-07-19 16:53:26,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:26,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083238343] [2022-07-19 16:53:26,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:26,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:26,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:26,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:53:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:53:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:26,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:26,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083238343] [2022-07-19 16:53:26,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083238343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:26,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:26,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:53:26,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270078932] [2022-07-19 16:53:26,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:26,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:53:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:26,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:53:26,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:53:26,493 INFO L87 Difference]: Start difference. First operand 608 states and 961 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:53:29,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:29,685 INFO L93 Difference]: Finished difference Result 1369 states and 2201 transitions. [2022-07-19 16:53:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:53:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-19 16:53:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:29,688 INFO L225 Difference]: With dead ends: 1369 [2022-07-19 16:53:29,688 INFO L226 Difference]: Without dead ends: 759 [2022-07-19 16:53:29,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:53:29,690 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1158 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:29,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1645 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 16:53:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-07-19 16:53:29,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 589. [2022-07-19 16:53:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.5973741794310723) internal successors, (730), 478 states have internal predecessors, (730), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-19 16:53:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 935 transitions. [2022-07-19 16:53:29,765 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 935 transitions. Word has length 72 [2022-07-19 16:53:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:29,765 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 935 transitions. [2022-07-19 16:53:29,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:53:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 935 transitions. [2022-07-19 16:53:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 16:53:29,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:29,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:29,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 16:53:29,768 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash 985584106, now seen corresponding path program 1 times [2022-07-19 16:53:29,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:29,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837916653] [2022-07-19 16:53:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:29,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:29,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:29,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 16:53:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:30,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:53:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:30,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:30,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837916653] [2022-07-19 16:53:30,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837916653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:30,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:30,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:53:30,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321134448] [2022-07-19 16:53:30,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:30,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:53:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:30,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:53:30,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:53:30,078 INFO L87 Difference]: Start difference. First operand 589 states and 935 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:53:34,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:34,432 INFO L93 Difference]: Finished difference Result 1304 states and 2116 transitions. [2022-07-19 16:53:34,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:53:34,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-07-19 16:53:34,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:34,436 INFO L225 Difference]: With dead ends: 1304 [2022-07-19 16:53:34,436 INFO L226 Difference]: Without dead ends: 780 [2022-07-19 16:53:34,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:53:34,438 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 1203 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 4432 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 4761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 4432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:34,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 2553 Invalid, 4761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 4432 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:53:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-07-19 16:53:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 594. [2022-07-19 16:53:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 462 states have (on average 1.5909090909090908) internal successors, (735), 483 states have internal predecessors, (735), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-19 16:53:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 940 transitions. [2022-07-19 16:53:34,493 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 940 transitions. Word has length 73 [2022-07-19 16:53:34,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:34,494 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 940 transitions. [2022-07-19 16:53:34,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:53:34,494 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 940 transitions. [2022-07-19 16:53:34,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 16:53:34,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:34,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:34,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 16:53:34,495 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:34,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:34,496 INFO L85 PathProgramCache]: Analyzing trace with hash 638082109, now seen corresponding path program 1 times [2022-07-19 16:53:34,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:34,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743081284] [2022-07-19 16:53:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:34,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:34,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:34,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:34,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:34,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:53:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:34,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:34,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743081284] [2022-07-19 16:53:34,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743081284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:34,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:34,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:53:34,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037866134] [2022-07-19 16:53:34,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:34,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:53:34,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:34,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:53:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:53:34,796 INFO L87 Difference]: Start difference. First operand 594 states and 940 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:53:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:37,946 INFO L93 Difference]: Finished difference Result 1302 states and 2111 transitions. [2022-07-19 16:53:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:53:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-07-19 16:53:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:37,951 INFO L225 Difference]: With dead ends: 1302 [2022-07-19 16:53:37,951 INFO L226 Difference]: Without dead ends: 757 [2022-07-19 16:53:37,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:53:37,953 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1191 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:37,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1633 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 16:53:37,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-07-19 16:53:38,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 594. [2022-07-19 16:53:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 462 states have (on average 1.5822510822510822) internal successors, (731), 483 states have internal predecessors, (731), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-19 16:53:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 936 transitions. [2022-07-19 16:53:38,028 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 936 transitions. Word has length 74 [2022-07-19 16:53:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:38,028 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 936 transitions. [2022-07-19 16:53:38,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:53:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 936 transitions. [2022-07-19 16:53:38,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 16:53:38,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:38,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:38,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 16:53:38,030 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:38,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1607497345, now seen corresponding path program 1 times [2022-07-19 16:53:38,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:38,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688917283] [2022-07-19 16:53:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:38,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:38,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:38,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:53:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:38,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:38,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688917283] [2022-07-19 16:53:38,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688917283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:38,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:38,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:53:38,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891005280] [2022-07-19 16:53:38,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:38,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:53:38,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:38,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:53:38,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:53:38,411 INFO L87 Difference]: Start difference. First operand 594 states and 936 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 16:53:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:45,848 INFO L93 Difference]: Finished difference Result 2132 states and 3551 transitions. [2022-07-19 16:53:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:53:45,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-07-19 16:53:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:45,858 INFO L225 Difference]: With dead ends: 2132 [2022-07-19 16:53:45,859 INFO L226 Difference]: Without dead ends: 1616 [2022-07-19 16:53:45,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:53:45,861 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 3679 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 4479 mSolverCounterSat, 1147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3776 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 5626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1147 IncrementalHoareTripleChecker+Valid, 4479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:45,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3776 Valid, 2270 Invalid, 5626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1147 Valid, 4479 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-07-19 16:53:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-07-19 16:53:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1136. [2022-07-19 16:53:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 883 states have (on average 1.6194790486976218) internal successors, (1430), 913 states have internal predecessors, (1430), 204 states have call successors, (204), 47 states have call predecessors, (204), 48 states have return successors, (206), 188 states have call predecessors, (206), 199 states have call successors, (206) [2022-07-19 16:53:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1840 transitions. [2022-07-19 16:53:45,996 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1840 transitions. Word has length 74 [2022-07-19 16:53:45,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:45,997 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1840 transitions. [2022-07-19 16:53:45,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 16:53:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1840 transitions. [2022-07-19 16:53:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 16:53:46,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:46,002 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:53:46,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 16:53:46,002 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:46,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:46,003 INFO L85 PathProgramCache]: Analyzing trace with hash -857434917, now seen corresponding path program 1 times [2022-07-19 16:53:46,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:46,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800897012] [2022-07-19 16:53:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:46,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:53:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:53:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:53:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:53:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:53:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 16:53:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 16:53:46,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:46,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800897012] [2022-07-19 16:53:46,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800897012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:46,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:46,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 16:53:46,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349233553] [2022-07-19 16:53:46,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:46,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 16:53:46,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:46,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 16:53:46,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:53:46,603 INFO L87 Difference]: Start difference. First operand 1136 states and 1840 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 16:54:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:05,925 INFO L93 Difference]: Finished difference Result 6056 states and 10172 transitions. [2022-07-19 16:54:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-19 16:54:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 128 [2022-07-19 16:54:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:05,954 INFO L225 Difference]: With dead ends: 6056 [2022-07-19 16:54:05,955 INFO L226 Difference]: Without dead ends: 4999 [2022-07-19 16:54:05,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=760, Invalid=2546, Unknown=0, NotChecked=0, Total=3306 [2022-07-19 16:54:05,964 INFO L413 NwaCegarLoop]: 1992 mSDtfsCounter, 4132 mSDsluCounter, 3786 mSDsCounter, 0 mSdLazyCounter, 12894 mSolverCounterSat, 2481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4144 SdHoareTripleChecker+Valid, 5778 SdHoareTripleChecker+Invalid, 15375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2481 IncrementalHoareTripleChecker+Valid, 12894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:05,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4144 Valid, 5778 Invalid, 15375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2481 Valid, 12894 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2022-07-19 16:54:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2022-07-19 16:54:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 2763. [2022-07-19 16:54:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2128 states have (on average 1.605263157894737) internal successors, (3416), 2179 states have internal predecessors, (3416), 498 states have call successors, (498), 127 states have call predecessors, (498), 136 states have return successors, (566), 478 states have call predecessors, (566), 493 states have call successors, (566) [2022-07-19 16:54:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4480 transitions. [2022-07-19 16:54:06,414 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4480 transitions. Word has length 128 [2022-07-19 16:54:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:06,414 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4480 transitions. [2022-07-19 16:54:06,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 16:54:06,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4480 transitions. [2022-07-19 16:54:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 16:54:06,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:06,420 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:54:06,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 16:54:06,420 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:06,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:06,420 INFO L85 PathProgramCache]: Analyzing trace with hash -947376971, now seen corresponding path program 1 times [2022-07-19 16:54:06,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:06,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843945125] [2022-07-19 16:54:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:06,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:06,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:06,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:06,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:06,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:54:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:54:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:54:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:54:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 16:54:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 16:54:07,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:07,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843945125] [2022-07-19 16:54:07,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843945125] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:54:07,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791913535] [2022-07-19 16:54:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:07,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:54:07,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:54:07,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:54:07,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 16:54:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:07,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:54:07,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:54:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:54:07,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:54:07,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791913535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:07,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:54:07,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-07-19 16:54:07,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700813860] [2022-07-19 16:54:07,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:07,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:54:07,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:07,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:54:07,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:54:07,630 INFO L87 Difference]: Start difference. First operand 2763 states and 4480 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:54:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:08,469 INFO L93 Difference]: Finished difference Result 5512 states and 9162 transitions. [2022-07-19 16:54:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:54:08,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2022-07-19 16:54:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:08,487 INFO L225 Difference]: With dead ends: 5512 [2022-07-19 16:54:08,487 INFO L226 Difference]: Without dead ends: 2827 [2022-07-19 16:54:08,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:54:08,502 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 863 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:08,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 2301 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 16:54:08,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2022-07-19 16:54:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2827. [2022-07-19 16:54:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2184 states have (on average 1.6080586080586081) internal successors, (3512), 2235 states have internal predecessors, (3512), 498 states have call successors, (498), 135 states have call predecessors, (498), 144 states have return successors, (574), 478 states have call predecessors, (574), 493 states have call successors, (574) [2022-07-19 16:54:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 4584 transitions. [2022-07-19 16:54:08,944 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 4584 transitions. Word has length 129 [2022-07-19 16:54:08,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:08,945 INFO L495 AbstractCegarLoop]: Abstraction has 2827 states and 4584 transitions. [2022-07-19 16:54:08,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:54:08,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 4584 transitions. [2022-07-19 16:54:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 16:54:08,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:08,954 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:54:08,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 16:54:09,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:54:09,155 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash -584278497, now seen corresponding path program 1 times [2022-07-19 16:54:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:09,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486595663] [2022-07-19 16:54:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:54:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 16:54:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:54:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 16:54:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:54:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:54:09,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:09,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486595663] [2022-07-19 16:54:09,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486595663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:09,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:09,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:54:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687482194] [2022-07-19 16:54:09,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:54:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:54:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:54:09,729 INFO L87 Difference]: Start difference. First operand 2827 states and 4584 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 16:54:15,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:15,612 INFO L93 Difference]: Finished difference Result 6481 states and 11008 transitions. [2022-07-19 16:54:15,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 16:54:15,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-07-19 16:54:15,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:15,661 INFO L225 Difference]: With dead ends: 6481 [2022-07-19 16:54:15,662 INFO L226 Difference]: Without dead ends: 3716 [2022-07-19 16:54:15,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:54:15,676 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 2282 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 3691 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 2628 SdHoareTripleChecker+Invalid, 4561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 3691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:15,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 2628 Invalid, 4561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 3691 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 16:54:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2022-07-19 16:54:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 2867. [2022-07-19 16:54:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2216 states have (on average 1.595667870036101) internal successors, (3536), 2267 states have internal predecessors, (3536), 498 states have call successors, (498), 143 states have call predecessors, (498), 152 states have return successors, (582), 478 states have call predecessors, (582), 493 states have call successors, (582) [2022-07-19 16:54:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 4616 transitions. [2022-07-19 16:54:16,084 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 4616 transitions. Word has length 131 [2022-07-19 16:54:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:16,085 INFO L495 AbstractCegarLoop]: Abstraction has 2867 states and 4616 transitions. [2022-07-19 16:54:16,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 16:54:16,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 4616 transitions. [2022-07-19 16:54:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-19 16:54:16,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:16,089 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:54:16,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 16:54:16,090 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:16,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:16,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1477178101, now seen corresponding path program 1 times [2022-07-19 16:54:16,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:16,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357466767] [2022-07-19 16:54:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:16,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:54:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 16:54:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:54:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 16:54:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:54:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:54:16,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:16,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357466767] [2022-07-19 16:54:16,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357466767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:16,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:16,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:54:16,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094620073] [2022-07-19 16:54:16,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:16,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:54:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:16,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:54:16,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:54:16,720 INFO L87 Difference]: Start difference. First operand 2867 states and 4616 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 16:54:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:22,603 INFO L93 Difference]: Finished difference Result 6569 states and 11060 transitions. [2022-07-19 16:54:22,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 16:54:22,607 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2022-07-19 16:54:22,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:22,623 INFO L225 Difference]: With dead ends: 6569 [2022-07-19 16:54:22,623 INFO L226 Difference]: Without dead ends: 3764 [2022-07-19 16:54:22,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:54:22,637 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 1821 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 3906 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 4629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 3906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:22,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 2653 Invalid, 4629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 3906 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 16:54:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2022-07-19 16:54:23,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 2915. [2022-07-19 16:54:23,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2256 states have (on average 1.5815602836879432) internal successors, (3568), 2307 states have internal predecessors, (3568), 498 states have call successors, (498), 151 states have call predecessors, (498), 160 states have return successors, (590), 478 states have call predecessors, (590), 493 states have call successors, (590) [2022-07-19 16:54:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 4656 transitions. [2022-07-19 16:54:23,032 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 4656 transitions. Word has length 133 [2022-07-19 16:54:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:23,033 INFO L495 AbstractCegarLoop]: Abstraction has 2915 states and 4656 transitions. [2022-07-19 16:54:23,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 16:54:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 4656 transitions. [2022-07-19 16:54:23,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 16:54:23,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:23,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:23,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 16:54:23,038 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:23,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:23,039 INFO L85 PathProgramCache]: Analyzing trace with hash -506061123, now seen corresponding path program 1 times [2022-07-19 16:54:23,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:23,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186944186] [2022-07-19 16:54:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:23,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:54:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:54:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 16:54:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:54:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:54:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:54:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:54:23,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:23,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186944186] [2022-07-19 16:54:23,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186944186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:23,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:23,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 16:54:23,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026701750] [2022-07-19 16:54:23,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:23,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 16:54:23,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:23,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 16:54:23,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:54:23,639 INFO L87 Difference]: Start difference. First operand 2915 states and 4656 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 16:54:36,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:36,836 INFO L93 Difference]: Finished difference Result 10068 states and 16592 transitions. [2022-07-19 16:54:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 16:54:36,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 134 [2022-07-19 16:54:36,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:36,861 INFO L225 Difference]: With dead ends: 10068 [2022-07-19 16:54:36,861 INFO L226 Difference]: Without dead ends: 7231 [2022-07-19 16:54:36,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=392, Invalid=1330, Unknown=0, NotChecked=0, Total=1722 [2022-07-19 16:54:36,873 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 2712 mSDsluCounter, 3462 mSDsCounter, 0 mSdLazyCounter, 9331 mSolverCounterSat, 1315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2754 SdHoareTripleChecker+Valid, 5102 SdHoareTripleChecker+Invalid, 10646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1315 IncrementalHoareTripleChecker+Valid, 9331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:36,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2754 Valid, 5102 Invalid, 10646 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1315 Valid, 9331 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-07-19 16:54:36,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7231 states. [2022-07-19 16:54:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7231 to 5847. [2022-07-19 16:54:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5847 states, 4448 states have (on average 1.5755395683453237) internal successors, (7008), 4559 states have internal predecessors, (7008), 1084 states have call successors, (1084), 279 states have call predecessors, (1084), 314 states have return successors, (1270), 1052 states have call predecessors, (1270), 1079 states have call successors, (1270) [2022-07-19 16:54:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 9362 transitions. [2022-07-19 16:54:37,693 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 9362 transitions. Word has length 134 [2022-07-19 16:54:37,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:37,693 INFO L495 AbstractCegarLoop]: Abstraction has 5847 states and 9362 transitions. [2022-07-19 16:54:37,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 16:54:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 9362 transitions. [2022-07-19 16:54:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-19 16:54:37,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:37,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:37,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 16:54:37,700 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:37,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash 921881431, now seen corresponding path program 1 times [2022-07-19 16:54:37,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:37,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168230423] [2022-07-19 16:54:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:37,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:37,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:37,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:37,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:37,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:37,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:54:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 16:54:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:54:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:54:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:54:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:54:38,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:38,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168230423] [2022-07-19 16:54:38,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168230423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:38,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:38,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:54:38,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690055645] [2022-07-19 16:54:38,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:38,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:54:38,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:54:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:54:38,208 INFO L87 Difference]: Start difference. First operand 5847 states and 9362 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 16:54:44,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:44,286 INFO L93 Difference]: Finished difference Result 13041 states and 21714 transitions. [2022-07-19 16:54:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 16:54:44,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2022-07-19 16:54:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:44,316 INFO L225 Difference]: With dead ends: 13041 [2022-07-19 16:54:44,317 INFO L226 Difference]: Without dead ends: 7240 [2022-07-19 16:54:44,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:54:44,341 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 2296 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 3776 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 4661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 3776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:44,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 2631 Invalid, 4661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 3776 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-19 16:54:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2022-07-19 16:54:45,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 5959. [2022-07-19 16:54:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5959 states, 4544 states have (on average 1.5598591549295775) internal successors, (7088), 4655 states have internal predecessors, (7088), 1084 states have call successors, (1084), 295 states have call predecessors, (1084), 330 states have return successors, (1286), 1052 states have call predecessors, (1286), 1079 states have call successors, (1286) [2022-07-19 16:54:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5959 states to 5959 states and 9458 transitions. [2022-07-19 16:54:45,262 INFO L78 Accepts]: Start accepts. Automaton has 5959 states and 9458 transitions. Word has length 135 [2022-07-19 16:54:45,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:45,262 INFO L495 AbstractCegarLoop]: Abstraction has 5959 states and 9458 transitions. [2022-07-19 16:54:45,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 16:54:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand 5959 states and 9458 transitions. [2022-07-19 16:54:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-19 16:54:45,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:45,269 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:45,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 16:54:45,269 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash 650210261, now seen corresponding path program 1 times [2022-07-19 16:54:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:45,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954029630] [2022-07-19 16:54:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:45,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:54:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:54:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:54:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 16:54:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:45,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954029630] [2022-07-19 16:54:45,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954029630] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:54:45,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706834242] [2022-07-19 16:54:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:45,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:54:45,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:54:45,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:54:45,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 16:54:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:46,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:54:46,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:54:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 16:54:46,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:54:46,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706834242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:46,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:54:46,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-07-19 16:54:46,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493365877] [2022-07-19 16:54:46,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:46,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:54:46,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:46,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:54:46,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:54:46,403 INFO L87 Difference]: Start difference. First operand 5959 states and 9458 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 16:54:47,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:47,422 INFO L93 Difference]: Finished difference Result 6174 states and 9823 transitions. [2022-07-19 16:54:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:54:47,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2022-07-19 16:54:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:47,454 INFO L225 Difference]: With dead ends: 6174 [2022-07-19 16:54:47,455 INFO L226 Difference]: Without dead ends: 6159 [2022-07-19 16:54:47,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:54:47,462 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 928 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:47,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1634 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:54:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6159 states. [2022-07-19 16:54:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6159 to 5977. [2022-07-19 16:54:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5977 states, 4562 states have (on average 1.557650153441473) internal successors, (7106), 4673 states have internal predecessors, (7106), 1084 states have call successors, (1084), 295 states have call predecessors, (1084), 330 states have return successors, (1286), 1052 states have call predecessors, (1286), 1079 states have call successors, (1286) [2022-07-19 16:54:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5977 states to 5977 states and 9476 transitions. [2022-07-19 16:54:48,335 INFO L78 Accepts]: Start accepts. Automaton has 5977 states and 9476 transitions. Word has length 137 [2022-07-19 16:54:48,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:48,335 INFO L495 AbstractCegarLoop]: Abstraction has 5977 states and 9476 transitions. [2022-07-19 16:54:48,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 16:54:48,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5977 states and 9476 transitions. [2022-07-19 16:54:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-19 16:54:48,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:48,342 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:48,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 16:54:48,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-19 16:54:48,567 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:48,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1741325680, now seen corresponding path program 1 times [2022-07-19 16:54:48,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:48,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069642782] [2022-07-19 16:54:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:48,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:54:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:54:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:54:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 16:54:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 16:54:49,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:49,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069642782] [2022-07-19 16:54:49,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069642782] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:54:49,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394129732] [2022-07-19 16:54:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:49,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:54:49,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:54:49,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:54:49,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 16:54:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 16:54:49,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:54:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 16:54:49,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:54:49,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394129732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:49,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:54:49,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-07-19 16:54:49,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851353946] [2022-07-19 16:54:49,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:49,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:54:49,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:49,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:54:49,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:54:49,539 INFO L87 Difference]: Start difference. First operand 5977 states and 9476 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:54:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:50,578 INFO L93 Difference]: Finished difference Result 6555 states and 10255 transitions. [2022-07-19 16:54:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:54:50,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-07-19 16:54:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:50,614 INFO L225 Difference]: With dead ends: 6555 [2022-07-19 16:54:50,614 INFO L226 Difference]: Without dead ends: 6540 [2022-07-19 16:54:50,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:54:50,622 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 892 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:50,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 3672 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 16:54:50,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6540 states. [2022-07-19 16:54:51,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 6421. [2022-07-19 16:54:51,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6421 states, 4916 states have (on average 1.5394629780309195) internal successors, (7568), 5027 states have internal predecessors, (7568), 1132 states have call successors, (1132), 343 states have call predecessors, (1132), 372 states have return successors, (1366), 1094 states have call predecessors, (1366), 1127 states have call successors, (1366) [2022-07-19 16:54:51,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6421 states to 6421 states and 10066 transitions. [2022-07-19 16:54:51,601 INFO L78 Accepts]: Start accepts. Automaton has 6421 states and 10066 transitions. Word has length 143 [2022-07-19 16:54:51,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:51,601 INFO L495 AbstractCegarLoop]: Abstraction has 6421 states and 10066 transitions. [2022-07-19 16:54:51,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:54:51,601 INFO L276 IsEmpty]: Start isEmpty. Operand 6421 states and 10066 transitions. [2022-07-19 16:54:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 16:54:51,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:51,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 16:54:51,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 16:54:51,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:54:51,824 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:51,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1862067337, now seen corresponding path program 1 times [2022-07-19 16:54:51,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:51,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327403575] [2022-07-19 16:54:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:51,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:54:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:54:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:54:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 16:54:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 16:54:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 16:54:52,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:52,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327403575] [2022-07-19 16:54:52,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327403575] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:54:52,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540780096] [2022-07-19 16:54:52,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:52,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:54:52,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:54:52,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:54:52,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 16:54:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:52,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:54:52,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:54:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 16:54:52,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:54:52,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540780096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:52,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:54:52,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-19 16:54:52,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492649957] [2022-07-19 16:54:52,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:52,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:54:52,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:52,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:54:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:54:52,736 INFO L87 Difference]: Start difference. First operand 6421 states and 10066 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:54:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:53,931 INFO L93 Difference]: Finished difference Result 12808 states and 20448 transitions. [2022-07-19 16:54:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:54:53,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2022-07-19 16:54:53,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:53,959 INFO L225 Difference]: With dead ends: 12808 [2022-07-19 16:54:53,960 INFO L226 Difference]: Without dead ends: 6453 [2022-07-19 16:54:53,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:54:53,989 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 846 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:53,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 2301 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 16:54:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2022-07-19 16:54:55,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 6453. [2022-07-19 16:54:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 4932 states have (on average 1.532035685320357) internal successors, (7556), 5059 states have internal predecessors, (7556), 1132 states have call successors, (1132), 343 states have call predecessors, (1132), 388 states have return successors, (1382), 1094 states have call predecessors, (1382), 1127 states have call successors, (1382) [2022-07-19 16:54:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 10070 transitions. [2022-07-19 16:54:55,037 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 10070 transitions. Word has length 154 [2022-07-19 16:54:55,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:55,038 INFO L495 AbstractCegarLoop]: Abstraction has 6453 states and 10070 transitions. [2022-07-19 16:54:55,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:54:55,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 10070 transitions. [2022-07-19 16:54:55,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 16:54:55,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:55,044 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 16:54:55,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 16:54:55,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-19 16:54:55,271 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:55,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:55,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1015335639, now seen corresponding path program 1 times [2022-07-19 16:54:55,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:55,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949365124] [2022-07-19 16:54:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:55,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:54:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:54:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:54:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 16:54:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 16:54:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 16:54:55,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:55,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949365124] [2022-07-19 16:54:55,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949365124] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:54:55,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021709795] [2022-07-19 16:54:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:55,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:54:55,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:54:55,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:54:55,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 16:54:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:56,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-19 16:54:56,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:54:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 16:54:56,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:54:56,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021709795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:56,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:54:56,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2022-07-19 16:54:56,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867080646] [2022-07-19 16:54:56,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:56,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:54:56,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:54:56,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-07-19 16:54:56,473 INFO L87 Difference]: Start difference. First operand 6453 states and 10070 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-19 16:54:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:59,564 INFO L93 Difference]: Finished difference Result 13791 states and 21853 transitions. [2022-07-19 16:54:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 16:54:59,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2022-07-19 16:54:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:59,596 INFO L225 Difference]: With dead ends: 13791 [2022-07-19 16:54:59,597 INFO L226 Difference]: Without dead ends: 7424 [2022-07-19 16:54:59,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:54:59,618 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 2760 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 4559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:59,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2865 Valid, 2847 Invalid, 4559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 16:54:59,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7424 states. [2022-07-19 16:55:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7424 to 7113. [2022-07-19 16:55:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7113 states, 5414 states have (on average 1.5293683043960102) internal successors, (8280), 5569 states have internal predecessors, (8280), 1258 states have call successors, (1258), 355 states have call predecessors, (1258), 440 states have return successors, (1586), 1232 states have call predecessors, (1586), 1253 states have call successors, (1586) [2022-07-19 16:55:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 11124 transitions. [2022-07-19 16:55:00,723 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 11124 transitions. Word has length 154 [2022-07-19 16:55:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:00,723 INFO L495 AbstractCegarLoop]: Abstraction has 7113 states and 11124 transitions. [2022-07-19 16:55:00,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-19 16:55:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 11124 transitions. [2022-07-19 16:55:00,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 16:55:00,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:00,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2022-07-19 16:55:00,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 16:55:00,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-19 16:55:00,944 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1945659165, now seen corresponding path program 1 times [2022-07-19 16:55:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:00,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135272290] [2022-07-19 16:55:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:00,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:55:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:55:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:55:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:55:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:55:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:55:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 16:55:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 16:55:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 16:55:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 16:55:01,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:01,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135272290] [2022-07-19 16:55:01,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135272290] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:55:01,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407164962] [2022-07-19 16:55:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:01,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:55:01,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:55:01,755 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:55:01,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 16:55:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:02,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 16:55:02,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:55:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 16:55:02,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:55:02,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407164962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:02,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:55:02,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 26 [2022-07-19 16:55:02,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137063204] [2022-07-19 16:55:02,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:02,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:55:02,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:02,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:55:02,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-07-19 16:55:02,120 INFO L87 Difference]: Start difference. First operand 7113 states and 11124 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-19 16:55:03,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:03,119 INFO L93 Difference]: Finished difference Result 7516 states and 11806 transitions. [2022-07-19 16:55:03,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:55:03,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 159 [2022-07-19 16:55:03,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:03,150 INFO L225 Difference]: With dead ends: 7516 [2022-07-19 16:55:03,150 INFO L226 Difference]: Without dead ends: 7501 [2022-07-19 16:55:03,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2022-07-19 16:55:03,158 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 71 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3800 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:03,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 3800 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:55:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2022-07-19 16:55:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7167. [2022-07-19 16:55:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 5468 states have (on average 1.524140453547915) internal successors, (8334), 5623 states have internal predecessors, (8334), 1258 states have call successors, (1258), 355 states have call predecessors, (1258), 440 states have return successors, (1586), 1232 states have call predecessors, (1586), 1253 states have call successors, (1586) [2022-07-19 16:55:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 11178 transitions. [2022-07-19 16:55:04,109 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 11178 transitions. Word has length 159 [2022-07-19 16:55:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:04,109 INFO L495 AbstractCegarLoop]: Abstraction has 7167 states and 11178 transitions. [2022-07-19 16:55:04,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-19 16:55:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 11178 transitions. [2022-07-19 16:55:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-19 16:55:04,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:04,116 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:55:04,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 16:55:04,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-19 16:55:04,338 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:04,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:04,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1079383695, now seen corresponding path program 1 times [2022-07-19 16:55:04,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:04,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486843665] [2022-07-19 16:55:04,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:04,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:55:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:55:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:55:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:55:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:55:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:55:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 16:55:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 16:55:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 16:55:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 16:55:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 16:55:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 16:55:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:55:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-19 16:55:05,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:05,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486843665] [2022-07-19 16:55:05,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486843665] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:55:05,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627456808] [2022-07-19 16:55:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:05,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:55:05,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:55:05,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:55:05,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 16:55:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1882 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 16:55:05,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:55:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-19 16:55:05,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 16:55:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-19 16:55:06,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627456808] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 16:55:06,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 16:55:06,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 8] total 29 [2022-07-19 16:55:06,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714450590] [2022-07-19 16:55:06,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 16:55:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-19 16:55:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-19 16:55:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-07-19 16:55:06,265 INFO L87 Difference]: Start difference. First operand 7167 states and 11178 transitions. Second operand has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 20 states have internal predecessors, (265), 10 states have call successors, (56), 9 states have call predecessors, (56), 15 states have return successors, (56), 16 states have call predecessors, (56), 9 states have call successors, (56) [2022-07-19 16:55:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:48,757 INFO L93 Difference]: Finished difference Result 38693 states and 67565 transitions. [2022-07-19 16:55:48,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-07-19 16:55:48,758 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 20 states have internal predecessors, (265), 10 states have call successors, (56), 9 states have call predecessors, (56), 15 states have return successors, (56), 16 states have call predecessors, (56), 9 states have call successors, (56) Word has length 202 [2022-07-19 16:55:48,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:48,908 INFO L225 Difference]: With dead ends: 38693 [2022-07-19 16:55:48,908 INFO L226 Difference]: Without dead ends: 31604 [2022-07-19 16:55:48,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 447 SyntacticMatches, 4 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6159 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2308, Invalid=16598, Unknown=0, NotChecked=0, Total=18906 [2022-07-19 16:55:48,979 INFO L413 NwaCegarLoop]: 2764 mSDtfsCounter, 19289 mSDsluCounter, 15467 mSDsCounter, 0 mSdLazyCounter, 42633 mSolverCounterSat, 10012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19289 SdHoareTripleChecker+Valid, 18231 SdHoareTripleChecker+Invalid, 52645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 10012 IncrementalHoareTripleChecker+Valid, 42633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:48,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19289 Valid, 18231 Invalid, 52645 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [10012 Valid, 42633 Invalid, 0 Unknown, 0 Unchecked, 26.2s Time] [2022-07-19 16:55:49,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31604 states. [2022-07-19 16:55:52,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31604 to 23377. [2022-07-19 16:55:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23377 states, 17672 states have (on average 1.5216161158895427) internal successors, (26890), 18223 states have internal predecessors, (26890), 4300 states have call successors, (4300), 1031 states have call predecessors, (4300), 1404 states have return successors, (5918), 4294 states have call predecessors, (5918), 4295 states have call successors, (5918) [2022-07-19 16:55:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23377 states to 23377 states and 37108 transitions. [2022-07-19 16:55:52,790 INFO L78 Accepts]: Start accepts. Automaton has 23377 states and 37108 transitions. Word has length 202 [2022-07-19 16:55:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:52,790 INFO L495 AbstractCegarLoop]: Abstraction has 23377 states and 37108 transitions. [2022-07-19 16:55:52,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 20 states have internal predecessors, (265), 10 states have call successors, (56), 9 states have call predecessors, (56), 15 states have return successors, (56), 16 states have call predecessors, (56), 9 states have call successors, (56) [2022-07-19 16:55:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 23377 states and 37108 transitions. [2022-07-19 16:55:52,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-19 16:55:52,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:52,810 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:55:52,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-19 16:55:53,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:55:53,011 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:53,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:53,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2017878079, now seen corresponding path program 1 times [2022-07-19 16:55:53,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:53,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063277101] [2022-07-19 16:55:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:53,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:53,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:53,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:55:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:53,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:53,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1