./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_spec1_product20.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 3f11976cf57fe8d65e71fe2317840ceb817472b70b756607274947c31f43df4d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 05:38:29,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 05:38:29,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 05:38:29,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 05:38:29,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 05:38:29,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 05:38:29,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 05:38:29,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 05:38:29,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 05:38:29,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 05:38:29,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 05:38:29,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 05:38:29,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 05:38:29,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 05:38:29,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 05:38:29,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 05:38:29,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 05:38:29,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 05:38:29,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 05:38:29,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 05:38:29,226 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 05:38:29,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 05:38:29,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 05:38:29,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 05:38:29,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 05:38:29,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 05:38:29,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 05:38:29,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 05:38:29,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 05:38:29,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 05:38:29,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 05:38:29,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 05:38:29,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 05:38:29,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 05:38:29,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 05:38:29,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 05:38:29,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 05:38:29,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 05:38:29,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 05:38:29,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 05:38:29,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 05:38:29,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 05:38:29,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 05:38:29,283 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 05:38:29,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 05:38:29,284 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 05:38:29,284 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 05:38:29,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 05:38:29,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 05:38:29,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 05:38:29,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 05:38:29,286 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 05:38:29,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 05:38:29,287 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 05:38:29,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 05:38:29,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 05:38:29,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 05:38:29,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 05:38:29,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 05:38:29,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 05:38:29,288 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 05:38:29,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 05:38:29,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 05:38:29,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 05:38:29,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 05:38:29,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 05:38:29,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 05:38:29,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:38:29,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 05:38:29,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 05:38:29,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 05:38:29,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 05:38:29,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 05:38:29,290 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 05:38:29,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 05:38:29,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 05:38:29,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f11976cf57fe8d65e71fe2317840ceb817472b70b756607274947c31f43df4d [2022-07-12 05:38:29,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 05:38:29,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 05:38:29,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 05:38:29,610 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 05:38:29,611 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 05:38:29,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2022-07-12 05:38:29,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61fff3d2f/59ace5a7c4d54c838d59d5d5b4988259/FLAGcf4f891d0 [2022-07-12 05:38:30,238 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 05:38:30,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2022-07-12 05:38:30,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61fff3d2f/59ace5a7c4d54c838d59d5d5b4988259/FLAGcf4f891d0 [2022-07-12 05:38:30,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61fff3d2f/59ace5a7c4d54c838d59d5d5b4988259 [2022-07-12 05:38:30,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 05:38:30,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 05:38:30,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 05:38:30,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 05:38:30,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 05:38:30,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:38:30" (1/1) ... [2022-07-12 05:38:30,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6260953f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:30, skipping insertion in model container [2022-07-12 05:38:30,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:38:30" (1/1) ... [2022-07-12 05:38:30,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 05:38:30,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 05:38:31,166 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_spec1_product20.cil.c[45414,45427] [2022-07-12 05:38:31,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:38:31,244 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 05:38:31,336 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_spec1_product20.cil.c[45414,45427] [2022-07-12 05:38:31,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:38:31,378 INFO L208 MainTranslator]: Completed translation [2022-07-12 05:38:31,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31 WrapperNode [2022-07-12 05:38:31,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 05:38:31,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 05:38:31,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 05:38:31,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 05:38:31,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (1/1) ... [2022-07-12 05:38:31,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (1/1) ... [2022-07-12 05:38:31,469 INFO L137 Inliner]: procedures = 96, calls = 347, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1123 [2022-07-12 05:38:31,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 05:38:31,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 05:38:31,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 05:38:31,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 05:38:31,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (1/1) ... [2022-07-12 05:38:31,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (1/1) ... [2022-07-12 05:38:31,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (1/1) ... [2022-07-12 05:38:31,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (1/1) ... [2022-07-12 05:38:31,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (1/1) ... [2022-07-12 05:38:31,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (1/1) ... [2022-07-12 05:38:31,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (1/1) ... [2022-07-12 05:38:31,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 05:38:31,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 05:38:31,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 05:38:31,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 05:38:31,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (1/1) ... [2022-07-12 05:38:31,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:38:31,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:31,593 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) [2022-07-12 05:38:31,620 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 [2022-07-12 05:38:31,641 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-12 05:38:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-12 05:38:31,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 05:38:31,641 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-12 05:38:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-12 05:38:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-12 05:38:31,642 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-12 05:38:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-07-12 05:38:31,643 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-07-12 05:38:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-12 05:38:31,643 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-12 05:38:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-12 05:38:31,643 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-12 05:38:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-12 05:38:31,643 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-12 05:38:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-12 05:38:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-12 05:38:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-12 05:38:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-12 05:38:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-12 05:38:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-12 05:38:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-12 05:38:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-12 05:38:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-12 05:38:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-12 05:38:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-12 05:38:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-12 05:38:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-12 05:38:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-12 05:38:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-12 05:38:31,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-12 05:38:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-12 05:38:31,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-12 05:38:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-12 05:38:31,647 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-12 05:38:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-12 05:38:31,647 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-12 05:38:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-12 05:38:31,647 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-12 05:38:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-12 05:38:31,648 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-12 05:38:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-12 05:38:31,648 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-12 05:38:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 05:38:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-12 05:38:31,649 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-12 05:38:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-12 05:38:31,649 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-12 05:38:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-12 05:38:31,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-12 05:38:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 05:38:31,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 05:38:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-12 05:38:31,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-12 05:38:31,651 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-12 05:38:31,651 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-12 05:38:31,821 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 05:38:31,824 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 05:38:32,741 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 05:38:32,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 05:38:32,758 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 05:38:32,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:38:32 BoogieIcfgContainer [2022-07-12 05:38:32,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 05:38:32,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 05:38:32,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 05:38:32,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 05:38:32,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 05:38:30" (1/3) ... [2022-07-12 05:38:32,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fca865a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:38:32, skipping insertion in model container [2022-07-12 05:38:32,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:31" (2/3) ... [2022-07-12 05:38:32,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fca865a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:38:32, skipping insertion in model container [2022-07-12 05:38:32,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:38:32" (3/3) ... [2022-07-12 05:38:32,770 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product20.cil.c [2022-07-12 05:38:32,782 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 05:38:32,782 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 05:38:32,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 05:38:32,881 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@25442b02, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@bb4cc2 [2022-07-12 05:38:32,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 05:38:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 576 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 469 states have internal predecessors, (750), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2022-07-12 05:38:32,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 05:38:32,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:32,903 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:32,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:32,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1248911478, now seen corresponding path program 1 times [2022-07-12 05:38:32,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:32,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744521305] [2022-07-12 05:38:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:32,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:38:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 05:38:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:38:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 05:38:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:38:33,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:33,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744521305] [2022-07-12 05:38:33,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744521305] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:33,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638853364] [2022-07-12 05:38:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:33,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:33,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:33,803 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) [2022-07-12 05:38:33,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 05:38:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:34,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 05:38:34,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 05:38:34,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:34,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638853364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:34,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:34,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2022-07-12 05:38:34,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301070907] [2022-07-12 05:38:34,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:34,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 05:38:34,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:34,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 05:38:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:38:34,276 INFO L87 Difference]: Start difference. First operand has 576 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 469 states have internal predecessors, (750), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 05:38:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:34,344 INFO L93 Difference]: Finished difference Result 597 states and 984 transitions. [2022-07-12 05:38:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 05:38:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2022-07-12 05:38:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:34,373 INFO L225 Difference]: With dead ends: 597 [2022-07-12 05:38:34,374 INFO L226 Difference]: Without dead ends: 568 [2022-07-12 05:38:34,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:38:34,381 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:34,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:38:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-07-12 05:38:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2022-07-12 05:38:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 440 states have (on average 1.6795454545454545) internal successors, (739), 461 states have internal predecessors, (739), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:38:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 938 transitions. [2022-07-12 05:38:34,482 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 938 transitions. Word has length 83 [2022-07-12 05:38:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:34,484 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 938 transitions. [2022-07-12 05:38:34,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 05:38:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 938 transitions. [2022-07-12 05:38:34,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 05:38:34,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:34,490 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:34,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 05:38:34,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-12 05:38:34,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:34,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:34,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2012184022, now seen corresponding path program 1 times [2022-07-12 05:38:34,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:34,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608054715] [2022-07-12 05:38:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:34,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:34,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:38:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 05:38:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:34,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:38:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 05:38:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:35,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:35,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:38:35,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:35,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608054715] [2022-07-12 05:38:35,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608054715] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:35,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452155138] [2022-07-12 05:38:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:35,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:35,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:35,254 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) [2022-07-12 05:38:35,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 05:38:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:35,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:38:35,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:38:35,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:35,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452155138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:35,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:35,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:35,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952134787] [2022-07-12 05:38:35,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:35,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:35,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:35,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:35,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:35,633 INFO L87 Difference]: Start difference. First operand 568 states and 938 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:35,754 INFO L93 Difference]: Finished difference Result 1127 states and 1868 transitions. [2022-07-12 05:38:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:38:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-07-12 05:38:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:35,762 INFO L225 Difference]: With dead ends: 1127 [2022-07-12 05:38:35,762 INFO L226 Difference]: Without dead ends: 568 [2022-07-12 05:38:35,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:35,772 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 14 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:35,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2765 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:38:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-07-12 05:38:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2022-07-12 05:38:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 440 states have (on average 1.6772727272727272) internal successors, (738), 461 states have internal predecessors, (738), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:38:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 937 transitions. [2022-07-12 05:38:35,829 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 937 transitions. Word has length 85 [2022-07-12 05:38:35,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:35,830 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 937 transitions. [2022-07-12 05:38:35,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:35,831 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 937 transitions. [2022-07-12 05:38:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 05:38:35,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:35,841 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:35,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:36,055 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,SelfDestructingSolverStorable1 [2022-07-12 05:38:36,056 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:36,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:36,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1579016016, now seen corresponding path program 1 times [2022-07-12 05:38:36,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:36,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707709210] [2022-07-12 05:38:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:36,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:38:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 05:38:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:38:36,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:36,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707709210] [2022-07-12 05:38:36,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707709210] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:36,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044683792] [2022-07-12 05:38:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:36,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:36,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:36,463 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) [2022-07-12 05:38:36,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 05:38:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:36,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:38:36,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:38:36,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:36,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044683792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:36,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:36,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630453533] [2022-07-12 05:38:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:36,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:36,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:36,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:36,809 INFO L87 Difference]: Start difference. First operand 568 states and 937 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:36,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:36,871 INFO L93 Difference]: Finished difference Result 1127 states and 1866 transitions. [2022-07-12 05:38:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:38:36,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2022-07-12 05:38:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:36,876 INFO L225 Difference]: With dead ends: 1127 [2022-07-12 05:38:36,877 INFO L226 Difference]: Without dead ends: 568 [2022-07-12 05:38:36,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:36,880 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 12 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:36,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2765 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:38:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-07-12 05:38:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2022-07-12 05:38:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 440 states have (on average 1.675) internal successors, (737), 461 states have internal predecessors, (737), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:38:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 936 transitions. [2022-07-12 05:38:36,902 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 936 transitions. Word has length 87 [2022-07-12 05:38:36,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:36,902 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 936 transitions. [2022-07-12 05:38:36,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:36,903 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 936 transitions. [2022-07-12 05:38:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-12 05:38:36,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:36,904 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:36,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:37,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:37,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:37,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:37,130 INFO L85 PathProgramCache]: Analyzing trace with hash 762396586, now seen corresponding path program 1 times [2022-07-12 05:38:37,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:37,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730480973] [2022-07-12 05:38:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:37,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 05:38:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 05:38:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:38:37,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:37,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730480973] [2022-07-12 05:38:37,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730480973] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:37,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590068569] [2022-07-12 05:38:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:37,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:37,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:37,562 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) [2022-07-12 05:38:37,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 05:38:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:37,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:38:37,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:38:37,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:37,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590068569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:37,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:37,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:37,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008414837] [2022-07-12 05:38:37,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:37,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:37,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:37,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:37,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:37,906 INFO L87 Difference]: Start difference. First operand 568 states and 936 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:37,970 INFO L93 Difference]: Finished difference Result 1134 states and 1873 transitions. [2022-07-12 05:38:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:38:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-07-12 05:38:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:37,975 INFO L225 Difference]: With dead ends: 1134 [2022-07-12 05:38:37,975 INFO L226 Difference]: Without dead ends: 577 [2022-07-12 05:38:37,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:37,979 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 20 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:37,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2765 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:38:37,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-12 05:38:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-07-12 05:38:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 448 states have (on average 1.671875) internal successors, (749), 469 states have internal predecessors, (749), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:38:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 948 transitions. [2022-07-12 05:38:37,999 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 948 transitions. Word has length 89 [2022-07-12 05:38:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:38,000 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 948 transitions. [2022-07-12 05:38:38,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:38,000 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 948 transitions. [2022-07-12 05:38:38,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 05:38:38,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:38,002 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:38,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-12 05:38:38,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:38,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:38,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2127369749, now seen corresponding path program 1 times [2022-07-12 05:38:38,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:38,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354111578] [2022-07-12 05:38:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:38,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 05:38:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:38:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 05:38:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:38:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:38,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354111578] [2022-07-12 05:38:38,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354111578] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:38,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044212197] [2022-07-12 05:38:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:38,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:38,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:38,576 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) [2022-07-12 05:38:38,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 05:38:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:38,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:38:38,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:38:38,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:38,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044212197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:38,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:38,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:38,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000195547] [2022-07-12 05:38:38,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:38,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:38,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:38,885 INFO L87 Difference]: Start difference. First operand 577 states and 948 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:38,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:38,954 INFO L93 Difference]: Finished difference Result 1136 states and 1874 transitions. [2022-07-12 05:38:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:38:38,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2022-07-12 05:38:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:38,959 INFO L225 Difference]: With dead ends: 1136 [2022-07-12 05:38:38,959 INFO L226 Difference]: Without dead ends: 577 [2022-07-12 05:38:38,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:38,962 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 18 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:38,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2765 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:38:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-12 05:38:38,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-07-12 05:38:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 448 states have (on average 1.6696428571428572) internal successors, (748), 469 states have internal predecessors, (748), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:38:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 947 transitions. [2022-07-12 05:38:38,982 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 947 transitions. Word has length 90 [2022-07-12 05:38:38,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:38,983 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 947 transitions. [2022-07-12 05:38:38,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 947 transitions. [2022-07-12 05:38:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 05:38:38,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:38,985 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:39,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:39,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:39,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:39,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1952395982, now seen corresponding path program 1 times [2022-07-12 05:38:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:39,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651939021] [2022-07-12 05:38:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:39,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 05:38:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 05:38:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 05:38:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:38:39,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:39,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651939021] [2022-07-12 05:38:39,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651939021] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:39,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637475905] [2022-07-12 05:38:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:39,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:39,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:39,575 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) [2022-07-12 05:38:39,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 05:38:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:39,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:38:39,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:38:39,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:39,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637475905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:39,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:39,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768500807] [2022-07-12 05:38:39,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:39,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:39,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:39,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:39,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:39,878 INFO L87 Difference]: Start difference. First operand 577 states and 947 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:39,935 INFO L93 Difference]: Finished difference Result 1136 states and 1873 transitions. [2022-07-12 05:38:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:38:39,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-07-12 05:38:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:39,940 INFO L225 Difference]: With dead ends: 1136 [2022-07-12 05:38:39,941 INFO L226 Difference]: Without dead ends: 577 [2022-07-12 05:38:39,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:39,946 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 17 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:39,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2765 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:38:39,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-12 05:38:39,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-07-12 05:38:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 448 states have (on average 1.6674107142857142) internal successors, (747), 469 states have internal predecessors, (747), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:38:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 946 transitions. [2022-07-12 05:38:39,972 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 946 transitions. Word has length 91 [2022-07-12 05:38:39,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:39,972 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 946 transitions. [2022-07-12 05:38:39,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:39,972 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 946 transitions. [2022-07-12 05:38:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 05:38:39,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:39,974 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:40,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:40,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:40,199 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:40,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1250643633, now seen corresponding path program 1 times [2022-07-12 05:38:40,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:40,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884472177] [2022-07-12 05:38:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:40,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 05:38:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 05:38:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:38:40,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:40,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884472177] [2022-07-12 05:38:40,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884472177] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:40,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187403913] [2022-07-12 05:38:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:40,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:40,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:40,576 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) [2022-07-12 05:38:40,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 05:38:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:40,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:38:40,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:38:40,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:40,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187403913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:40,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:40,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:40,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930179779] [2022-07-12 05:38:40,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:40,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:40,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:40,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:40,907 INFO L87 Difference]: Start difference. First operand 577 states and 946 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:41,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:41,038 INFO L93 Difference]: Finished difference Result 1147 states and 1894 transitions. [2022-07-12 05:38:41,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:38:41,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2022-07-12 05:38:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:41,044 INFO L225 Difference]: With dead ends: 1147 [2022-07-12 05:38:41,045 INFO L226 Difference]: Without dead ends: 577 [2022-07-12 05:38:41,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:41,048 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 135 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:41,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2582 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:38:41,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-12 05:38:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-07-12 05:38:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 448 states have (on average 1.65625) internal successors, (742), 469 states have internal predecessors, (742), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:38:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 941 transitions. [2022-07-12 05:38:41,068 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 941 transitions. Word has length 92 [2022-07-12 05:38:41,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:41,069 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 941 transitions. [2022-07-12 05:38:41,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 941 transitions. [2022-07-12 05:38:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 05:38:41,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:41,070 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:41,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:41,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:41,292 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:41,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1295945999, now seen corresponding path program 1 times [2022-07-12 05:38:41,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:41,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355754880] [2022-07-12 05:38:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:41,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:38:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 05:38:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:38:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:41,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355754880] [2022-07-12 05:38:41,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355754880] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:41,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255335614] [2022-07-12 05:38:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:41,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:41,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:41,697 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:41,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 05:38:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:41,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:38:41,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:38:42,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:42,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255335614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:42,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:42,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:42,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603915333] [2022-07-12 05:38:42,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:42,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:42,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:42,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:42,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:42,024 INFO L87 Difference]: Start difference. First operand 577 states and 941 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:42,137 INFO L93 Difference]: Finished difference Result 1147 states and 1884 transitions. [2022-07-12 05:38:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:38:42,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2022-07-12 05:38:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:42,142 INFO L225 Difference]: With dead ends: 1147 [2022-07-12 05:38:42,143 INFO L226 Difference]: Without dead ends: 577 [2022-07-12 05:38:42,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:42,146 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 129 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:42,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2582 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:38:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-12 05:38:42,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-07-12 05:38:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 448 states have (on average 1.6450892857142858) internal successors, (737), 469 states have internal predecessors, (737), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:38:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 936 transitions. [2022-07-12 05:38:42,163 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 936 transitions. Word has length 94 [2022-07-12 05:38:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:42,163 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 936 transitions. [2022-07-12 05:38:42,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:42,164 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 936 transitions. [2022-07-12 05:38:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 05:38:42,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:42,165 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:42,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:42,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-12 05:38:42,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:42,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:42,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2050201809, now seen corresponding path program 1 times [2022-07-12 05:38:42,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:42,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304091397] [2022-07-12 05:38:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:42,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:38:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:38:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:38:42,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:42,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304091397] [2022-07-12 05:38:42,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304091397] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:42,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859180023] [2022-07-12 05:38:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:42,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:42,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:42,753 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:42,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 05:38:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:38:43,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:38:43,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:43,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859180023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:43,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:43,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:43,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691859933] [2022-07-12 05:38:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:43,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:43,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:43,101 INFO L87 Difference]: Start difference. First operand 577 states and 936 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:43,242 INFO L93 Difference]: Finished difference Result 1183 states and 1933 transitions. [2022-07-12 05:38:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:38:43,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-07-12 05:38:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:43,248 INFO L225 Difference]: With dead ends: 1183 [2022-07-12 05:38:43,248 INFO L226 Difference]: Without dead ends: 628 [2022-07-12 05:38:43,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:43,252 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 179 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:43,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2592 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:38:43,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-12 05:38:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2022-07-12 05:38:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 498 states have (on average 1.6506024096385543) internal successors, (822), 519 states have internal predecessors, (822), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:38:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1021 transitions. [2022-07-12 05:38:43,271 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1021 transitions. Word has length 96 [2022-07-12 05:38:43,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:43,271 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1021 transitions. [2022-07-12 05:38:43,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:43,272 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1021 transitions. [2022-07-12 05:38:43,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 05:38:43,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:43,273 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:43,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:43,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:43,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1006669816, now seen corresponding path program 1 times [2022-07-12 05:38:43,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:43,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698061556] [2022-07-12 05:38:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:43,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:38:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:38:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:38:43,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:43,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698061556] [2022-07-12 05:38:43,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698061556] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:43,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602000043] [2022-07-12 05:38:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:43,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:43,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:43,872 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:43,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 05:38:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:38:44,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:38:44,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:44,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602000043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:44,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:44,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:44,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011811300] [2022-07-12 05:38:44,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:44,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:44,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:44,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:44,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:44,177 INFO L87 Difference]: Start difference. First operand 628 states and 1021 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:44,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:44,330 INFO L93 Difference]: Finished difference Result 1198 states and 1957 transitions. [2022-07-12 05:38:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:38:44,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-07-12 05:38:44,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:44,334 INFO L225 Difference]: With dead ends: 1198 [2022-07-12 05:38:44,334 INFO L226 Difference]: Without dead ends: 628 [2022-07-12 05:38:44,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:44,337 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 173 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:44,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2592 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:38:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-12 05:38:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2022-07-12 05:38:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 498 states have (on average 1.640562248995984) internal successors, (817), 519 states have internal predecessors, (817), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:38:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1016 transitions. [2022-07-12 05:38:44,357 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1016 transitions. Word has length 97 [2022-07-12 05:38:44,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:44,357 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1016 transitions. [2022-07-12 05:38:44,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1016 transitions. [2022-07-12 05:38:44,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 05:38:44,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:44,360 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:44,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:44,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 05:38:44,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:44,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash -467547977, now seen corresponding path program 1 times [2022-07-12 05:38:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:44,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133284315] [2022-07-12 05:38:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:38:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:38:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:38:44,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:44,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133284315] [2022-07-12 05:38:44,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133284315] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:44,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640653136] [2022-07-12 05:38:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:44,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:44,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:44,963 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:44,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 05:38:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:45,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 05:38:45,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:38:45,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:45,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640653136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:45,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:45,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-07-12 05:38:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307019191] [2022-07-12 05:38:45,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:45,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:38:45,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:45,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:38:45,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:38:45,365 INFO L87 Difference]: Start difference. First operand 628 states and 1016 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:45,524 INFO L93 Difference]: Finished difference Result 1221 states and 1987 transitions. [2022-07-12 05:38:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:38:45,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-07-12 05:38:45,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:45,529 INFO L225 Difference]: With dead ends: 1221 [2022-07-12 05:38:45,529 INFO L226 Difference]: Without dead ends: 666 [2022-07-12 05:38:45,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:38:45,532 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 177 mSDsluCounter, 5323 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6228 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:45,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6228 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:38:45,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-12 05:38:45,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 647. [2022-07-12 05:38:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 514 states have (on average 1.640077821011673) internal successors, (843), 537 states have internal predecessors, (843), 103 states have call successors, (103), 28 states have call predecessors, (103), 29 states have return successors, (100), 95 states have call predecessors, (100), 98 states have call successors, (100) [2022-07-12 05:38:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1046 transitions. [2022-07-12 05:38:45,558 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1046 transitions. Word has length 97 [2022-07-12 05:38:45,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:45,558 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1046 transitions. [2022-07-12 05:38:45,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1046 transitions. [2022-07-12 05:38:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 05:38:45,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:45,560 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:45,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:45,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 05:38:45,783 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:45,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1038799210, now seen corresponding path program 1 times [2022-07-12 05:38:45,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:45,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403074073] [2022-07-12 05:38:45,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:45,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:45,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:45,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:45,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:45,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:38:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:45,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:46,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:38:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:46,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:46,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:38:46,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:46,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403074073] [2022-07-12 05:38:46,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403074073] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:46,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186084753] [2022-07-12 05:38:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:46,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:46,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:46,166 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:46,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 05:38:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:46,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:38:46,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:38:46,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:46,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186084753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:46,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:46,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-12 05:38:46,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329842150] [2022-07-12 05:38:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:46,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:38:46,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:46,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:38:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:38:46,557 INFO L87 Difference]: Start difference. First operand 647 states and 1046 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:46,652 INFO L93 Difference]: Finished difference Result 1159 states and 1887 transitions. [2022-07-12 05:38:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:38:46,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-07-12 05:38:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:46,657 INFO L225 Difference]: With dead ends: 1159 [2022-07-12 05:38:46,657 INFO L226 Difference]: Without dead ends: 671 [2022-07-12 05:38:46,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:38:46,660 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 134 mSDsluCounter, 4479 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5396 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:46,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5396 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:38:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-12 05:38:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 666. [2022-07-12 05:38:46,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 530 states have (on average 1.639622641509434) internal successors, (869), 555 states have internal predecessors, (869), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:38:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1076 transitions. [2022-07-12 05:38:46,681 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1076 transitions. Word has length 97 [2022-07-12 05:38:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:46,682 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1076 transitions. [2022-07-12 05:38:46,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:46,683 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1076 transitions. [2022-07-12 05:38:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 05:38:46,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:46,685 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:46,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:46,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 05:38:46,899 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:46,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:46,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2133277604, now seen corresponding path program 1 times [2022-07-12 05:38:46,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:46,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372268027] [2022-07-12 05:38:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:46,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:38:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:38:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:38:47,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:47,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372268027] [2022-07-12 05:38:47,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372268027] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:47,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742312445] [2022-07-12 05:38:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:47,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:47,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:47,276 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:47,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 05:38:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:47,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:38:47,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:38:47,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:47,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742312445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:47,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:47,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-12 05:38:47,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556816146] [2022-07-12 05:38:47,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:47,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:38:47,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:47,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:38:47,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:38:47,682 INFO L87 Difference]: Start difference. First operand 666 states and 1076 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:47,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:47,772 INFO L93 Difference]: Finished difference Result 1189 states and 1938 transitions. [2022-07-12 05:38:47,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:38:47,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-07-12 05:38:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:47,777 INFO L225 Difference]: With dead ends: 1189 [2022-07-12 05:38:47,778 INFO L226 Difference]: Without dead ends: 701 [2022-07-12 05:38:47,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:38:47,781 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 143 mSDsluCounter, 4469 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5386 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:47,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5386 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:38:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-07-12 05:38:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 666. [2022-07-12 05:38:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 530 states have (on average 1.639622641509434) internal successors, (869), 555 states have internal predecessors, (869), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:38:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1076 transitions. [2022-07-12 05:38:47,802 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1076 transitions. Word has length 98 [2022-07-12 05:38:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:47,802 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1076 transitions. [2022-07-12 05:38:47,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1076 transitions. [2022-07-12 05:38:47,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 05:38:47,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:47,804 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:47,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:48,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 05:38:48,019 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:48,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1983906012, now seen corresponding path program 1 times [2022-07-12 05:38:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:48,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440910744] [2022-07-12 05:38:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:38:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:38:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:38:48,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:48,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440910744] [2022-07-12 05:38:48,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440910744] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:48,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887094139] [2022-07-12 05:38:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:48,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:48,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:48,345 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:48,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 05:38:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:48,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 05:38:48,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:38:48,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:48,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887094139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:48,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:48,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-07-12 05:38:48,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005452783] [2022-07-12 05:38:48,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:48,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:38:48,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:48,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:38:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:38:48,776 INFO L87 Difference]: Start difference. First operand 666 states and 1076 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:48,914 INFO L93 Difference]: Finished difference Result 1174 states and 1912 transitions. [2022-07-12 05:38:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:38:48,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-07-12 05:38:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:48,919 INFO L225 Difference]: With dead ends: 1174 [2022-07-12 05:38:48,919 INFO L226 Difference]: Without dead ends: 686 [2022-07-12 05:38:48,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:38:48,923 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 177 mSDsluCounter, 5329 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6236 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:48,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6236 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:38:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-07-12 05:38:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 666. [2022-07-12 05:38:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 530 states have (on average 1.639622641509434) internal successors, (869), 555 states have internal predecessors, (869), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:38:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1076 transitions. [2022-07-12 05:38:48,944 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1076 transitions. Word has length 98 [2022-07-12 05:38:48,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:48,945 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1076 transitions. [2022-07-12 05:38:48,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:48,945 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1076 transitions. [2022-07-12 05:38:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 05:38:48,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:48,947 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:48,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:49,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:49,165 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:49,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:49,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1693855001, now seen corresponding path program 1 times [2022-07-12 05:38:49,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:49,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384131316] [2022-07-12 05:38:49,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:49,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:38:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 05:38:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:38:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 05:38:49,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:49,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384131316] [2022-07-12 05:38:49,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384131316] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:49,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598292783] [2022-07-12 05:38:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:49,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:49,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:49,481 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:49,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 05:38:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:49,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:38:49,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 05:38:49,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:49,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598292783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:49,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:49,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:49,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623123378] [2022-07-12 05:38:49,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:49,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:49,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:49,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:49,819 INFO L87 Difference]: Start difference. First operand 666 states and 1076 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:49,867 INFO L93 Difference]: Finished difference Result 1226 states and 1997 transitions. [2022-07-12 05:38:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:38:49,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2022-07-12 05:38:49,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:49,872 INFO L225 Difference]: With dead ends: 1226 [2022-07-12 05:38:49,872 INFO L226 Difference]: Without dead ends: 666 [2022-07-12 05:38:49,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:49,878 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 23 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:49,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2734 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:38:49,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-12 05:38:49,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2022-07-12 05:38:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 530 states have (on average 1.6320754716981132) internal successors, (865), 555 states have internal predecessors, (865), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:38:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1072 transitions. [2022-07-12 05:38:49,899 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1072 transitions. Word has length 98 [2022-07-12 05:38:49,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:49,900 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1072 transitions. [2022-07-12 05:38:49,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:49,900 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1072 transitions. [2022-07-12 05:38:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 05:38:49,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:49,902 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:49,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:50,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 05:38:50,115 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1433704046, now seen corresponding path program 1 times [2022-07-12 05:38:50,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:50,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075964669] [2022-07-12 05:38:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:50,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:38:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 05:38:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:38:50,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:50,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075964669] [2022-07-12 05:38:50,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075964669] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:50,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102885124] [2022-07-12 05:38:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:50,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:50,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:50,440 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:50,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 05:38:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:50,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 05:38:50,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:38:50,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:50,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102885124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:50,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:50,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-07-12 05:38:50,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020175288] [2022-07-12 05:38:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:50,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:38:50,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:38:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:38:50,803 INFO L87 Difference]: Start difference. First operand 666 states and 1072 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:50,947 INFO L93 Difference]: Finished difference Result 1174 states and 1909 transitions. [2022-07-12 05:38:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:38:50,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-07-12 05:38:50,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:50,953 INFO L225 Difference]: With dead ends: 1174 [2022-07-12 05:38:50,953 INFO L226 Difference]: Without dead ends: 686 [2022-07-12 05:38:50,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:38:50,957 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 185 mSDsluCounter, 5292 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6193 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:50,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6193 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:38:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-07-12 05:38:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 666. [2022-07-12 05:38:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 530 states have (on average 1.6320754716981132) internal successors, (865), 555 states have internal predecessors, (865), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:38:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1072 transitions. [2022-07-12 05:38:50,981 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1072 transitions. Word has length 99 [2022-07-12 05:38:50,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:50,981 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1072 transitions. [2022-07-12 05:38:50,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:50,982 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1072 transitions. [2022-07-12 05:38:50,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 05:38:50,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:50,983 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:51,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:51,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 05:38:51,208 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:51,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash 468945441, now seen corresponding path program 1 times [2022-07-12 05:38:51,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:51,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559627407] [2022-07-12 05:38:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:51,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:38:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:38:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:38:51,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:51,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559627407] [2022-07-12 05:38:51,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559627407] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:51,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138380932] [2022-07-12 05:38:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:51,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:51,556 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:51,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 05:38:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:51,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 05:38:51,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 05:38:51,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:51,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138380932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:51,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:51,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:38:51,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831446612] [2022-07-12 05:38:51,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:51,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:38:51,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:51,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:38:51,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:38:51,852 INFO L87 Difference]: Start difference. First operand 666 states and 1072 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:51,899 INFO L93 Difference]: Finished difference Result 1282 states and 2079 transitions. [2022-07-12 05:38:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:38:51,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-07-12 05:38:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:51,904 INFO L225 Difference]: With dead ends: 1282 [2022-07-12 05:38:51,904 INFO L226 Difference]: Without dead ends: 702 [2022-07-12 05:38:51,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:38:51,908 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 38 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:51,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2710 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:38:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-07-12 05:38:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 690. [2022-07-12 05:38:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 554 states have (on average 1.611913357400722) internal successors, (893), 579 states have internal predecessors, (893), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:38:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1100 transitions. [2022-07-12 05:38:51,953 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1100 transitions. Word has length 100 [2022-07-12 05:38:51,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:51,954 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1100 transitions. [2022-07-12 05:38:51,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:38:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1100 transitions. [2022-07-12 05:38:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 05:38:51,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:51,958 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:38:51,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:52,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 05:38:52,164 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:52,164 INFO L85 PathProgramCache]: Analyzing trace with hash -548448926, now seen corresponding path program 1 times [2022-07-12 05:38:52,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:52,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127190749] [2022-07-12 05:38:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:52,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:38:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:38:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:38:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:38:52,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:52,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127190749] [2022-07-12 05:38:52,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127190749] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:52,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118872062] [2022-07-12 05:38:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:52,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:52,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:52,464 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:52,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 05:38:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:52,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:38:52,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 05:38:53,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:53,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118872062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:53,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:53,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-07-12 05:38:53,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211938082] [2022-07-12 05:38:53,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:53,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:38:53,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:53,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:38:53,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:38:53,062 INFO L87 Difference]: Start difference. First operand 690 states and 1100 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:56,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:38:56,045 INFO L93 Difference]: Finished difference Result 2244 states and 3699 transitions. [2022-07-12 05:38:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:38:56,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-07-12 05:38:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:38:56,056 INFO L225 Difference]: With dead ends: 2244 [2022-07-12 05:38:56,056 INFO L226 Difference]: Without dead ends: 1761 [2022-07-12 05:38:56,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:38:56,060 INFO L413 NwaCegarLoop]: 1582 mSDtfsCounter, 4078 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 985 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4262 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 4224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 985 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:38:56,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4262 Valid, 2662 Invalid, 4224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [985 Valid, 3239 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 05:38:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2022-07-12 05:38:56,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1574. [2022-07-12 05:38:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1249 states have (on average 1.6525220176140913) internal successors, (2064), 1292 states have internal predecessors, (2064), 259 states have call successors, (259), 60 states have call predecessors, (259), 65 states have return successors, (268), 236 states have call predecessors, (268), 254 states have call successors, (268) [2022-07-12 05:38:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2591 transitions. [2022-07-12 05:38:56,132 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2591 transitions. Word has length 100 [2022-07-12 05:38:56,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:38:56,133 INFO L495 AbstractCegarLoop]: Abstraction has 1574 states and 2591 transitions. [2022-07-12 05:38:56,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:38:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2591 transitions. [2022-07-12 05:38:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-12 05:38:56,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:38:56,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:38:56,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 05:38:56,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 05:38:56,351 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:38:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:38:56,352 INFO L85 PathProgramCache]: Analyzing trace with hash -278522964, now seen corresponding path program 1 times [2022-07-12 05:38:56,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:38:56,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476047364] [2022-07-12 05:38:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:56,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:38:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:38:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:38:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:38:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:38:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:38:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:38:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:38:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:38:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:38:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:38:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 05:38:56,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:38:56,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476047364] [2022-07-12 05:38:56,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476047364] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:38:56,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134768210] [2022-07-12 05:38:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:38:56,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:38:56,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:38:56,874 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:38:56,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 05:38:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:38:57,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 05:38:57,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:38:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 05:38:57,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:38:57,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134768210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:38:57,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:38:57,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-12 05:38:57,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699135045] [2022-07-12 05:38:57,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:38:57,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:38:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:38:57,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:38:57,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:38:57,460 INFO L87 Difference]: Start difference. First operand 1574 states and 2591 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 05:39:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:00,361 INFO L93 Difference]: Finished difference Result 4208 states and 6979 transitions. [2022-07-12 05:39:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:39:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 152 [2022-07-12 05:39:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:00,383 INFO L225 Difference]: With dead ends: 4208 [2022-07-12 05:39:00,383 INFO L226 Difference]: Without dead ends: 2681 [2022-07-12 05:39:00,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-07-12 05:39:00,394 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 1759 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 4614 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1842 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 4991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 4614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:00,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1842 Valid, 2742 Invalid, 4991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 4614 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 05:39:00,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-07-12 05:39:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2461. [2022-07-12 05:39:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 1927 states have (on average 1.6320705760249092) internal successors, (3145), 1979 states have internal predecessors, (3145), 425 states have call successors, (425), 89 states have call predecessors, (425), 108 states have return successors, (468), 403 states have call predecessors, (468), 420 states have call successors, (468) [2022-07-12 05:39:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 4038 transitions. [2022-07-12 05:39:00,532 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 4038 transitions. Word has length 152 [2022-07-12 05:39:00,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:00,532 INFO L495 AbstractCegarLoop]: Abstraction has 2461 states and 4038 transitions. [2022-07-12 05:39:00,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 05:39:00,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 4038 transitions. [2022-07-12 05:39:00,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 05:39:00,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:00,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:00,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:00,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:00,763 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1619415799, now seen corresponding path program 1 times [2022-07-12 05:39:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:00,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064628299] [2022-07-12 05:39:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:00,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:00,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:39:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:39:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:39:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:39:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:39:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:39:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 05:39:01,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:01,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064628299] [2022-07-12 05:39:01,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064628299] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:01,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400110712] [2022-07-12 05:39:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:01,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:01,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:01,304 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:01,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 05:39:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:01,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:39:01,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:39:01,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:01,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400110712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:01,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:01,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-12 05:39:01,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656757070] [2022-07-12 05:39:01,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:01,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:39:01,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:01,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:39:01,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:39:01,736 INFO L87 Difference]: Start difference. First operand 2461 states and 4038 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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) [2022-07-12 05:39:02,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:02,178 INFO L93 Difference]: Finished difference Result 4763 states and 7996 transitions. [2022-07-12 05:39:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:39:02,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 153 [2022-07-12 05:39:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:02,196 INFO L225 Difference]: With dead ends: 4763 [2022-07-12 05:39:02,196 INFO L226 Difference]: Without dead ends: 2509 [2022-07-12 05:39:02,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:39:02,212 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 861 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:02,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 2313 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:39:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2022-07-12 05:39:02,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2509. [2022-07-12 05:39:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 1969 states have (on average 1.633824276282377) internal successors, (3217), 2021 states have internal predecessors, (3217), 425 states have call successors, (425), 95 states have call predecessors, (425), 114 states have return successors, (473), 403 states have call predecessors, (473), 420 states have call successors, (473) [2022-07-12 05:39:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 4115 transitions. [2022-07-12 05:39:02,325 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 4115 transitions. Word has length 153 [2022-07-12 05:39:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:02,325 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 4115 transitions. [2022-07-12 05:39:02,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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) [2022-07-12 05:39:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 4115 transitions. [2022-07-12 05:39:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 05:39:02,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:02,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:02,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:02,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:02,555 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1804319117, now seen corresponding path program 1 times [2022-07-12 05:39:02,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:02,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675591986] [2022-07-12 05:39:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:02,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:02,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:02,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:39:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:02,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:02,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:39:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:02,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 05:39:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 05:39:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 05:39:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 05:39:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:39:03,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:03,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675591986] [2022-07-12 05:39:03,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675591986] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:03,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298876588] [2022-07-12 05:39:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:03,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:03,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:03,036 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:03,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 05:39:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:03,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:39:03,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:03,486 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:39:03,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:03,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298876588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:03,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:03,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-12 05:39:03,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039724644] [2022-07-12 05:39:03,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:03,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:39:03,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:39:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:39:03,495 INFO L87 Difference]: Start difference. First operand 2509 states and 4115 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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) [2022-07-12 05:39:03,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:03,923 INFO L93 Difference]: Finished difference Result 4859 states and 8134 transitions. [2022-07-12 05:39:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:39:03,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 155 [2022-07-12 05:39:03,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:03,960 INFO L225 Difference]: With dead ends: 4859 [2022-07-12 05:39:03,961 INFO L226 Difference]: Without dead ends: 2557 [2022-07-12 05:39:03,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:39:03,974 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 845 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:03,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2313 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:39:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2022-07-12 05:39:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2557. [2022-07-12 05:39:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2011 states have (on average 1.6355047240179015) internal successors, (3289), 2063 states have internal predecessors, (3289), 425 states have call successors, (425), 101 states have call predecessors, (425), 120 states have return successors, (478), 403 states have call predecessors, (478), 420 states have call successors, (478) [2022-07-12 05:39:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 4192 transitions. [2022-07-12 05:39:04,094 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 4192 transitions. Word has length 155 [2022-07-12 05:39:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:04,095 INFO L495 AbstractCegarLoop]: Abstraction has 2557 states and 4192 transitions. [2022-07-12 05:39:04,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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) [2022-07-12 05:39:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 4192 transitions. [2022-07-12 05:39:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 05:39:04,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:04,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:04,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:04,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:04,323 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:04,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash 626842359, now seen corresponding path program 1 times [2022-07-12 05:39:04,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:04,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162488547] [2022-07-12 05:39:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:04,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:39:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:39:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:39:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 05:39:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 05:39:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 05:39:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:04,786 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 05:39:04,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:04,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162488547] [2022-07-12 05:39:04,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162488547] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:04,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562368517] [2022-07-12 05:39:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:04,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:04,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:04,788 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:04,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 05:39:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:05,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:39:05,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:39:05,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:05,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562368517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:05,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:05,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-12 05:39:05,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130906785] [2022-07-12 05:39:05,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:05,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:39:05,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:05,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:39:05,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:39:05,194 INFO L87 Difference]: Start difference. First operand 2557 states and 4192 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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) [2022-07-12 05:39:05,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:05,617 INFO L93 Difference]: Finished difference Result 4955 states and 8272 transitions. [2022-07-12 05:39:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:39:05,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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 157 [2022-07-12 05:39:05,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:05,629 INFO L225 Difference]: With dead ends: 4955 [2022-07-12 05:39:05,630 INFO L226 Difference]: Without dead ends: 2605 [2022-07-12 05:39:05,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:39:05,641 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 860 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:05,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 2313 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:39:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2022-07-12 05:39:05,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2605. [2022-07-12 05:39:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2053 states have (on average 1.6371164150024355) internal successors, (3361), 2105 states have internal predecessors, (3361), 425 states have call successors, (425), 107 states have call predecessors, (425), 126 states have return successors, (483), 403 states have call predecessors, (483), 420 states have call successors, (483) [2022-07-12 05:39:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4269 transitions. [2022-07-12 05:39:05,752 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4269 transitions. Word has length 157 [2022-07-12 05:39:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:05,753 INFO L495 AbstractCegarLoop]: Abstraction has 2605 states and 4269 transitions. [2022-07-12 05:39:05,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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) [2022-07-12 05:39:05,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4269 transitions. [2022-07-12 05:39:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 05:39:05,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:05,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:05,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:05,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:05,984 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:05,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:05,984 INFO L85 PathProgramCache]: Analyzing trace with hash 341410693, now seen corresponding path program 1 times [2022-07-12 05:39:05,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:05,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161007895] [2022-07-12 05:39:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:05,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:39:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:39:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:39:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:39:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 05:39:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 05:39:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 05:39:06,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:06,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161007895] [2022-07-12 05:39:06,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161007895] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:06,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802292814] [2022-07-12 05:39:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:06,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:06,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:06,480 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:06,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-12 05:39:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:06,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:39:06,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:39:06,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:06,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802292814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:06,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:06,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-12 05:39:06,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832130562] [2022-07-12 05:39:06,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:06,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:39:06,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:06,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:39:06,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:39:06,924 INFO L87 Difference]: Start difference. First operand 2605 states and 4269 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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) [2022-07-12 05:39:07,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:07,379 INFO L93 Difference]: Finished difference Result 5051 states and 8410 transitions. [2022-07-12 05:39:07,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:39:07,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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 159 [2022-07-12 05:39:07,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:07,393 INFO L225 Difference]: With dead ends: 5051 [2022-07-12 05:39:07,393 INFO L226 Difference]: Without dead ends: 2653 [2022-07-12 05:39:07,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:39:07,404 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 858 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:07,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 2313 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 05:39:07,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2022-07-12 05:39:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2653. [2022-07-12 05:39:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2095 states have (on average 1.6386634844868735) internal successors, (3433), 2147 states have internal predecessors, (3433), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2022-07-12 05:39:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4346 transitions. [2022-07-12 05:39:07,525 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4346 transitions. Word has length 159 [2022-07-12 05:39:07,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:07,525 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4346 transitions. [2022-07-12 05:39:07,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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) [2022-07-12 05:39:07,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4346 transitions. [2022-07-12 05:39:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 05:39:07,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:07,531 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:07,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:07,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:07,759 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:07,760 INFO L85 PathProgramCache]: Analyzing trace with hash -182456073, now seen corresponding path program 1 times [2022-07-12 05:39:07,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:07,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864141811] [2022-07-12 05:39:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:07,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:07,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:07,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:07,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:39:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:07,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:39:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-12 05:39:08,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:08,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864141811] [2022-07-12 05:39:08,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864141811] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:08,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26694883] [2022-07-12 05:39:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:08,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:08,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:08,284 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:08,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-12 05:39:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:08,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:39:08,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 05:39:08,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:08,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26694883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:08,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:08,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-12 05:39:08,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420712525] [2022-07-12 05:39:08,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:08,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:39:08,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:39:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:39:08,763 INFO L87 Difference]: Start difference. First operand 2653 states and 4346 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-12 05:39:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:09,118 INFO L93 Difference]: Finished difference Result 2768 states and 4536 transitions. [2022-07-12 05:39:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:39:09,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 161 [2022-07-12 05:39:09,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:09,132 INFO L225 Difference]: With dead ends: 2768 [2022-07-12 05:39:09,132 INFO L226 Difference]: Without dead ends: 2753 [2022-07-12 05:39:09,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:39:09,135 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 874 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:09,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1640 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:39:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2022-07-12 05:39:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2662. [2022-07-12 05:39:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2104 states have (on average 1.6359315589353611) internal successors, (3442), 2156 states have internal predecessors, (3442), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2022-07-12 05:39:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 4355 transitions. [2022-07-12 05:39:09,275 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 4355 transitions. Word has length 161 [2022-07-12 05:39:09,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:09,276 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 4355 transitions. [2022-07-12 05:39:09,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-12 05:39:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 4355 transitions. [2022-07-12 05:39:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 05:39:09,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:09,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:09,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:09,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:09,508 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:09,508 INFO L85 PathProgramCache]: Analyzing trace with hash -914555150, now seen corresponding path program 1 times [2022-07-12 05:39:09,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:09,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074760285] [2022-07-12 05:39:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:09,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:39:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:39:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:39:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-12 05:39:09,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:09,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074760285] [2022-07-12 05:39:09,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074760285] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:09,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457734895] [2022-07-12 05:39:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:09,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:09,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:09,955 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:09,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-12 05:39:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:10,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 2132 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 05:39:10,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 05:39:10,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:10,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457734895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:10,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:10,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-12 05:39:10,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514799263] [2022-07-12 05:39:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:10,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:39:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:39:10,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:39:10,379 INFO L87 Difference]: Start difference. First operand 2662 states and 4355 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:39:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:10,753 INFO L93 Difference]: Finished difference Result 2902 states and 4693 transitions. [2022-07-12 05:39:10,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:39:10,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-07-12 05:39:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:10,766 INFO L225 Difference]: With dead ends: 2902 [2022-07-12 05:39:10,766 INFO L226 Difference]: Without dead ends: 2887 [2022-07-12 05:39:10,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:39:10,768 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 892 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 3667 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:10,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 3667 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:39:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-07-12 05:39:10,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2828. [2022-07-12 05:39:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2238 states have (on average 1.6291331546023236) internal successors, (3646), 2290 states have internal predecessors, (3646), 441 states have call successors, (441), 131 states have call predecessors, (441), 148 states have return successors, (507), 417 states have call predecessors, (507), 436 states have call successors, (507) [2022-07-12 05:39:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 4594 transitions. [2022-07-12 05:39:10,885 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 4594 transitions. Word has length 167 [2022-07-12 05:39:10,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:10,886 INFO L495 AbstractCegarLoop]: Abstraction has 2828 states and 4594 transitions. [2022-07-12 05:39:10,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:39:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 4594 transitions. [2022-07-12 05:39:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 05:39:10,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:10,892 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 05:39:10,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:11,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-12 05:39:11,108 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:11,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:11,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1391110426, now seen corresponding path program 1 times [2022-07-12 05:39:11,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:11,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101672929] [2022-07-12 05:39:11,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:11,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:39:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:39:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:39:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:39:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:39:11,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:11,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101672929] [2022-07-12 05:39:11,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101672929] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:11,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99183475] [2022-07-12 05:39:11,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:11,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:11,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:11,733 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:11,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-12 05:39:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:12,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 05:39:12,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:12,176 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 05:39:12,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:12,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99183475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:12,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:12,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2022-07-12 05:39:12,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952995633] [2022-07-12 05:39:12,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:12,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:39:12,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:12,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:39:12,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:39:12,178 INFO L87 Difference]: Start difference. First operand 2828 states and 4594 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:39:12,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:12,306 INFO L93 Difference]: Finished difference Result 5630 states and 9158 transitions. [2022-07-12 05:39:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:39:12,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2022-07-12 05:39:12,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:12,330 INFO L225 Difference]: With dead ends: 5630 [2022-07-12 05:39:12,330 INFO L226 Difference]: Without dead ends: 2797 [2022-07-12 05:39:12,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-07-12 05:39:12,340 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 11 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2736 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:12,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2736 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:39:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-07-12 05:39:12,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2797. [2022-07-12 05:39:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2210 states have (on average 1.6289592760180995) internal successors, (3600), 2260 states have internal predecessors, (3600), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2022-07-12 05:39:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4544 transitions. [2022-07-12 05:39:12,454 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4544 transitions. Word has length 178 [2022-07-12 05:39:12,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:12,454 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 4544 transitions. [2022-07-12 05:39:12,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:39:12,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4544 transitions. [2022-07-12 05:39:12,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-12 05:39:12,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:12,459 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:12,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:12,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-12 05:39:12,676 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:12,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1755884593, now seen corresponding path program 1 times [2022-07-12 05:39:12,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:12,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828309947] [2022-07-12 05:39:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:12,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:12,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:12,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:39:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:12,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:12,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 05:39:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:39:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:39:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:39:13,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:13,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828309947] [2022-07-12 05:39:13,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828309947] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:13,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486607774] [2022-07-12 05:39:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:13,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:13,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:13,361 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:13,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-12 05:39:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:13,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 05:39:13,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:39:13,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:13,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486607774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:13,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:13,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-07-12 05:39:13,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280740272] [2022-07-12 05:39:13,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:13,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:39:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:39:13,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-12 05:39:13,750 INFO L87 Difference]: Start difference. First operand 2797 states and 4544 transitions. Second operand has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:39:13,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:13,900 INFO L93 Difference]: Finished difference Result 5563 states and 9052 transitions. [2022-07-12 05:39:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:39:13,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2022-07-12 05:39:13,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:13,915 INFO L225 Difference]: With dead ends: 5563 [2022-07-12 05:39:13,915 INFO L226 Difference]: Without dead ends: 2797 [2022-07-12 05:39:13,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:39:13,923 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 143 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5423 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:13,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5423 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:39:13,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-07-12 05:39:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2776. [2022-07-12 05:39:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2189 states have (on average 1.6290543627227045) internal successors, (3566), 2239 states have internal predecessors, (3566), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2022-07-12 05:39:14,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 4510 transitions. [2022-07-12 05:39:14,042 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 4510 transitions. Word has length 180 [2022-07-12 05:39:14,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:14,043 INFO L495 AbstractCegarLoop]: Abstraction has 2776 states and 4510 transitions. [2022-07-12 05:39:14,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:39:14,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 4510 transitions. [2022-07-12 05:39:14,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-12 05:39:14,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:14,049 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:14,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:14,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-12 05:39:14,269 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2068561484, now seen corresponding path program 1 times [2022-07-12 05:39:14,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:14,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991176965] [2022-07-12 05:39:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 05:39:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 05:39:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:39:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:39:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 05:39:14,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:14,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991176965] [2022-07-12 05:39:14,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991176965] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:14,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423858064] [2022-07-12 05:39:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:14,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:14,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:14,900 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:14,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-12 05:39:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:15,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:39:15,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:39:15,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:15,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423858064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:15,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:15,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2022-07-12 05:39:15,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565475740] [2022-07-12 05:39:15,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:15,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:39:15,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:15,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:39:15,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:39:15,260 INFO L87 Difference]: Start difference. First operand 2776 states and 4510 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:39:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:15,404 INFO L93 Difference]: Finished difference Result 5521 states and 8986 transitions. [2022-07-12 05:39:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:39:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2022-07-12 05:39:15,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:15,420 INFO L225 Difference]: With dead ends: 5521 [2022-07-12 05:39:15,421 INFO L226 Difference]: Without dead ends: 2776 [2022-07-12 05:39:15,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-07-12 05:39:15,430 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 176 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:15,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2569 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:39:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2022-07-12 05:39:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2776. [2022-07-12 05:39:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2189 states have (on average 1.628597533120146) internal successors, (3565), 2239 states have internal predecessors, (3565), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2022-07-12 05:39:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 4509 transitions. [2022-07-12 05:39:15,539 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 4509 transitions. Word has length 182 [2022-07-12 05:39:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:15,540 INFO L495 AbstractCegarLoop]: Abstraction has 2776 states and 4509 transitions. [2022-07-12 05:39:15,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:39:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 4509 transitions. [2022-07-12 05:39:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-12 05:39:15,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:15,545 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:15,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-07-12 05:39:15,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-12 05:39:15,766 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:15,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1112083105, now seen corresponding path program 1 times [2022-07-12 05:39:15,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:15,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369753308] [2022-07-12 05:39:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:15,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:15,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:39:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:15,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:39:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:39:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 05:39:16,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:16,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369753308] [2022-07-12 05:39:16,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369753308] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:16,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673738844] [2022-07-12 05:39:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:16,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:16,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:16,429 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:16,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-12 05:39:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:16,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 05:39:16,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 05:39:16,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:16,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673738844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:16,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:16,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 17 [2022-07-12 05:39:16,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981222010] [2022-07-12 05:39:16,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:16,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:39:16,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:16,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:39:16,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-12 05:39:16,728 INFO L87 Difference]: Start difference. First operand 2776 states and 4509 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:39:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:16,824 INFO L93 Difference]: Finished difference Result 5480 states and 8931 transitions. [2022-07-12 05:39:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:39:16,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 183 [2022-07-12 05:39:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:16,839 INFO L225 Difference]: With dead ends: 5480 [2022-07-12 05:39:16,839 INFO L226 Difference]: Without dead ends: 2736 [2022-07-12 05:39:16,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-12 05:39:16,850 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 13 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:16,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2734 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:39:16,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-07-12 05:39:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2736. [2022-07-12 05:39:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2152 states have (on average 1.6273234200743494) internal successors, (3502), 2200 states have internal predecessors, (3502), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2022-07-12 05:39:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4442 transitions. [2022-07-12 05:39:16,953 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4442 transitions. Word has length 183 [2022-07-12 05:39:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:16,954 INFO L495 AbstractCegarLoop]: Abstraction has 2736 states and 4442 transitions. [2022-07-12 05:39:16,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:39:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4442 transitions. [2022-07-12 05:39:16,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-12 05:39:16,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:16,959 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:16,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:17,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-12 05:39:17,186 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:17,186 INFO L85 PathProgramCache]: Analyzing trace with hash 801648784, now seen corresponding path program 1 times [2022-07-12 05:39:17,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:17,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40541213] [2022-07-12 05:39:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:17,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:39:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 05:39:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:39:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:39:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:39:17,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:17,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40541213] [2022-07-12 05:39:17,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40541213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:17,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:39:17,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 05:39:17,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43930538] [2022-07-12 05:39:17,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:17,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:39:17,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:17,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:39:17,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:39:17,683 INFO L87 Difference]: Start difference. First operand 2736 states and 4442 transitions. Second operand has 11 states, 10 states have (on average 12.4) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:39:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:25,376 INFO L93 Difference]: Finished difference Result 6304 states and 10374 transitions. [2022-07-12 05:39:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 05:39:25,377 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.4) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 184 [2022-07-12 05:39:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:25,392 INFO L225 Difference]: With dead ends: 6304 [2022-07-12 05:39:25,392 INFO L226 Difference]: Without dead ends: 3669 [2022-07-12 05:39:25,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-07-12 05:39:25,402 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 1942 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 6229 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 6846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 6229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:25,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 3104 Invalid, 6846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [617 Valid, 6229 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-12 05:39:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2022-07-12 05:39:25,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 2736. [2022-07-12 05:39:25,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2152 states have (on average 1.6268587360594795) internal successors, (3501), 2200 states have internal predecessors, (3501), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2022-07-12 05:39:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4441 transitions. [2022-07-12 05:39:25,688 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4441 transitions. Word has length 184 [2022-07-12 05:39:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:25,688 INFO L495 AbstractCegarLoop]: Abstraction has 2736 states and 4441 transitions. [2022-07-12 05:39:25,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.4) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:39:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4441 transitions. [2022-07-12 05:39:25,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 05:39:25,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:25,693 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:25,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 05:39:25,694 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:25,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:25,694 INFO L85 PathProgramCache]: Analyzing trace with hash 909172133, now seen corresponding path program 1 times [2022-07-12 05:39:25,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:25,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791956261] [2022-07-12 05:39:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:25,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:39:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:25,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:39:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:39:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:39:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 05:39:26,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:26,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791956261] [2022-07-12 05:39:26,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791956261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:26,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:39:26,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 05:39:26,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720662042] [2022-07-12 05:39:26,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:26,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:39:26,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:26,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:39:26,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:39:26,237 INFO L87 Difference]: Start difference. First operand 2736 states and 4441 transitions. Second operand has 11 states, 10 states have (on average 12.6) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:39:32,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:32,872 INFO L93 Difference]: Finished difference Result 6320 states and 10401 transitions. [2022-07-12 05:39:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 05:39:32,873 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.6) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 185 [2022-07-12 05:39:32,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:32,892 INFO L225 Difference]: With dead ends: 6320 [2022-07-12 05:39:32,892 INFO L226 Difference]: Without dead ends: 3627 [2022-07-12 05:39:32,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:39:32,903 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 2341 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 5864 mSolverCounterSat, 769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 6633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 5864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:32,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2424 Valid, 2987 Invalid, 6633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [769 Valid, 5864 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-12 05:39:32,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2022-07-12 05:39:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 2724. [2022-07-12 05:39:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2140 states have (on average 1.6294392523364487) internal successors, (3487), 2188 states have internal predecessors, (3487), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2022-07-12 05:39:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4427 transitions. [2022-07-12 05:39:33,212 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4427 transitions. Word has length 185 [2022-07-12 05:39:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:33,213 INFO L495 AbstractCegarLoop]: Abstraction has 2724 states and 4427 transitions. [2022-07-12 05:39:33,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.6) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:39:33,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4427 transitions. [2022-07-12 05:39:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 05:39:33,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:33,218 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:33,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 05:39:33,219 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:33,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash -266050077, now seen corresponding path program 1 times [2022-07-12 05:39:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:33,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713861068] [2022-07-12 05:39:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:33,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:39:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:39:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:39:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:39:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:39:33,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:33,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713861068] [2022-07-12 05:39:33,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713861068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:33,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:39:33,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 05:39:33,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128216300] [2022-07-12 05:39:33,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:33,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:39:33,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:33,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:39:33,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:39:33,803 INFO L87 Difference]: Start difference. First operand 2724 states and 4427 transitions. Second operand has 11 states, 10 states have (on average 12.5) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:39:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:41,348 INFO L93 Difference]: Finished difference Result 6371 states and 10472 transitions. [2022-07-12 05:39:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 05:39:41,348 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.5) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 185 [2022-07-12 05:39:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:41,361 INFO L225 Difference]: With dead ends: 6371 [2022-07-12 05:39:41,361 INFO L226 Difference]: Without dead ends: 3684 [2022-07-12 05:39:41,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-07-12 05:39:41,369 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 1504 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 6376 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 6844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 6376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:41,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 3069 Invalid, 6844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 6376 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-12 05:39:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2022-07-12 05:39:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 2728. [2022-07-12 05:39:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2728 states, 2144 states have (on average 1.6277985074626866) internal successors, (3490), 2192 states have internal predecessors, (3490), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2022-07-12 05:39:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 4430 transitions. [2022-07-12 05:39:41,763 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 4430 transitions. Word has length 185 [2022-07-12 05:39:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:41,763 INFO L495 AbstractCegarLoop]: Abstraction has 2728 states and 4430 transitions. [2022-07-12 05:39:41,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.5) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:39:41,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 4430 transitions. [2022-07-12 05:39:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 05:39:41,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:41,769 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:41,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 05:39:41,770 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:41,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:41,770 INFO L85 PathProgramCache]: Analyzing trace with hash 144526743, now seen corresponding path program 1 times [2022-07-12 05:39:41,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:41,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212317013] [2022-07-12 05:39:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:41,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:41,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:41,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:39:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:41,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:39:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:39:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:39:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:39:42,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:42,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212317013] [2022-07-12 05:39:42,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212317013] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:42,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957821606] [2022-07-12 05:39:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:42,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:42,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:42,551 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:42,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-12 05:39:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:42,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 2183 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 05:39:42,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 05:39:43,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:43,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957821606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:43,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:43,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2022-07-12 05:39:43,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108665613] [2022-07-12 05:39:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:43,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:39:43,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:39:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-07-12 05:39:43,181 INFO L87 Difference]: Start difference. First operand 2728 states and 4430 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 05:39:44,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:44,542 INFO L93 Difference]: Finished difference Result 5438 states and 8872 transitions. [2022-07-12 05:39:44,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:39:44,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 186 [2022-07-12 05:39:44,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:44,552 INFO L225 Difference]: With dead ends: 5438 [2022-07-12 05:39:44,552 INFO L226 Difference]: Without dead ends: 2825 [2022-07-12 05:39:44,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-12 05:39:44,558 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 2033 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:44,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2138 Valid, 1653 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 05:39:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2022-07-12 05:39:44,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2650. [2022-07-12 05:39:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2042 states have (on average 1.6126346718903035) internal successors, (3293), 2104 states have internal predecessors, (3293), 471 states have call successors, (471), 123 states have call predecessors, (471), 136 states have return successors, (520), 444 states have call predecessors, (520), 466 states have call successors, (520) [2022-07-12 05:39:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 4284 transitions. [2022-07-12 05:39:44,829 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 4284 transitions. Word has length 186 [2022-07-12 05:39:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:44,829 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 4284 transitions. [2022-07-12 05:39:44,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 05:39:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 4284 transitions. [2022-07-12 05:39:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 05:39:44,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:44,833 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:44,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:45,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-12 05:39:45,060 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:45,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2073103655, now seen corresponding path program 1 times [2022-07-12 05:39:45,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:45,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057734533] [2022-07-12 05:39:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:39:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:39:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:39:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:39:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:39:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:39:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:39:45,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:45,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057734533] [2022-07-12 05:39:45,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057734533] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:45,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178256461] [2022-07-12 05:39:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:45,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:45,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:45,767 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:45,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-12 05:39:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:46,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 05:39:46,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 05:39:46,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:46,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178256461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:46,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:46,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 23 [2022-07-12 05:39:46,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290895496] [2022-07-12 05:39:46,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:46,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:39:46,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:46,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:39:46,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:39:46,279 INFO L87 Difference]: Start difference. First operand 2650 states and 4284 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-12 05:39:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:49,134 INFO L93 Difference]: Finished difference Result 9046 states and 14877 transitions. [2022-07-12 05:39:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 05:39:49,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 186 [2022-07-12 05:39:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:49,166 INFO L225 Difference]: With dead ends: 9046 [2022-07-12 05:39:49,166 INFO L226 Difference]: Without dead ends: 6511 [2022-07-12 05:39:49,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 05:39:49,181 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 2994 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 4007 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3074 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 4644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 4007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:49,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3074 Valid, 3615 Invalid, 4644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 4007 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 05:39:49,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2022-07-12 05:39:49,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6043. [2022-07-12 05:39:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6043 states, 4654 states have (on average 1.6229050279329609) internal successors, (7553), 4797 states have internal predecessors, (7553), 1061 states have call successors, (1061), 268 states have call predecessors, (1061), 327 states have return successors, (1262), 1021 states have call predecessors, (1262), 1056 states have call successors, (1262) [2022-07-12 05:39:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6043 states to 6043 states and 9876 transitions. [2022-07-12 05:39:49,861 INFO L78 Accepts]: Start accepts. Automaton has 6043 states and 9876 transitions. Word has length 186 [2022-07-12 05:39:49,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:49,861 INFO L495 AbstractCegarLoop]: Abstraction has 6043 states and 9876 transitions. [2022-07-12 05:39:49,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-12 05:39:49,861 INFO L276 IsEmpty]: Start isEmpty. Operand 6043 states and 9876 transitions. [2022-07-12 05:39:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 05:39:49,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:49,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:49,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-07-12 05:39:50,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:50,066 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:50,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:50,066 INFO L85 PathProgramCache]: Analyzing trace with hash 173242649, now seen corresponding path program 1 times [2022-07-12 05:39:50,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:50,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929862276] [2022-07-12 05:39:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:50,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:39:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:39:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:39:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:39:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 05:39:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 05:39:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-12 05:39:50,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:50,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929862276] [2022-07-12 05:39:50,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929862276] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:50,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627525561] [2022-07-12 05:39:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:50,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:50,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:50,800 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:50,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-12 05:39:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:51,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-12 05:39:51,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 05:39:51,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:51,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627525561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:51,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:51,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2022-07-12 05:39:51,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405870746] [2022-07-12 05:39:51,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:51,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:39:51,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:39:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:39:51,315 INFO L87 Difference]: Start difference. First operand 6043 states and 9876 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-12 05:39:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:54,082 INFO L93 Difference]: Finished difference Result 13069 states and 21535 transitions. [2022-07-12 05:39:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 05:39:54,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 188 [2022-07-12 05:39:54,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:54,115 INFO L225 Difference]: With dead ends: 13069 [2022-07-12 05:39:54,115 INFO L226 Difference]: Without dead ends: 7141 [2022-07-12 05:39:54,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 228 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 05:39:54,134 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 2135 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 3386 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 3904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 3386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:54,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2219 Valid, 2667 Invalid, 3904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 3386 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 05:39:54,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7141 states. [2022-07-12 05:39:54,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7141 to 6318. [2022-07-12 05:39:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 4855 states have (on average 1.6152420185375902) internal successors, (7842), 5016 states have internal predecessors, (7842), 1097 states have call successors, (1097), 283 states have call predecessors, (1097), 365 states have return successors, (1395), 1062 states have call predecessors, (1395), 1092 states have call successors, (1395) [2022-07-12 05:39:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 10334 transitions. [2022-07-12 05:39:54,784 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 10334 transitions. Word has length 188 [2022-07-12 05:39:54,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:54,785 INFO L495 AbstractCegarLoop]: Abstraction has 6318 states and 10334 transitions. [2022-07-12 05:39:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-12 05:39:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 10334 transitions. [2022-07-12 05:39:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-12 05:39:54,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:54,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:54,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-07-12 05:39:54,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:54,989 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:54,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:54,989 INFO L85 PathProgramCache]: Analyzing trace with hash -732783431, now seen corresponding path program 1 times [2022-07-12 05:39:54,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:54,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631633612] [2022-07-12 05:39:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:54,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:39:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:39:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:39:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:39:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:39:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:39:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:39:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:39:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:39:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 05:39:55,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:55,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631633612] [2022-07-12 05:39:55,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631633612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:55,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:39:55,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 05:39:55,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123024655] [2022-07-12 05:39:55,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:55,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 05:39:55,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:55,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 05:39:55,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:39:55,558 INFO L87 Difference]: Start difference. First operand 6318 states and 10334 transitions. Second operand has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 9 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 05:40:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:38,131 INFO L93 Difference]: Finished difference Result 32934 states and 56214 transitions. [2022-07-12 05:40:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-07-12 05:40:38,132 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 9 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 193 [2022-07-12 05:40:38,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:38,260 INFO L225 Difference]: With dead ends: 32934 [2022-07-12 05:40:38,260 INFO L226 Difference]: Without dead ends: 26735 [2022-07-12 05:40:38,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3021 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1595, Invalid=6777, Unknown=0, NotChecked=0, Total=8372 [2022-07-12 05:40:38,299 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 8326 mSDsluCounter, 4037 mSDsCounter, 0 mSdLazyCounter, 19384 mSolverCounterSat, 4811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8377 SdHoareTripleChecker+Valid, 5813 SdHoareTripleChecker+Invalid, 24195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4811 IncrementalHoareTripleChecker+Valid, 19384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:38,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8377 Valid, 5813 Invalid, 24195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4811 Valid, 19384 Invalid, 0 Unknown, 0 Unchecked, 31.7s Time] [2022-07-12 05:40:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26735 states. [2022-07-12 05:40:39,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26735 to 6614. [2022-07-12 05:40:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6614 states, 5085 states have (on average 1.6043264503441494) internal successors, (8158), 5234 states have internal predecessors, (8158), 1137 states have call successors, (1137), 304 states have call predecessors, (1137), 391 states have return successors, (1419), 1119 states have call predecessors, (1419), 1132 states have call successors, (1419) [2022-07-12 05:40:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6614 states to 6614 states and 10714 transitions. [2022-07-12 05:40:39,605 INFO L78 Accepts]: Start accepts. Automaton has 6614 states and 10714 transitions. Word has length 193 [2022-07-12 05:40:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:39,606 INFO L495 AbstractCegarLoop]: Abstraction has 6614 states and 10714 transitions. [2022-07-12 05:40:39,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 9 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 05:40:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6614 states and 10714 transitions. [2022-07-12 05:40:39,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-12 05:40:39,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:39,609 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:39,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 05:40:39,609 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:39,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1195489271, now seen corresponding path program 1 times [2022-07-12 05:40:39,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:39,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824258297] [2022-07-12 05:40:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:39,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:39,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:39,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:39,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:40:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:39,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:39,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:40:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:40:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:40:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:40:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:40:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:40:40,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:40,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824258297] [2022-07-12 05:40:40,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824258297] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:40,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378224026] [2022-07-12 05:40:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:40,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:40,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:40,416 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:40,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-12 05:40:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:40,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 2198 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 05:40:40,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 05:40:40,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:40,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378224026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:40,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:40,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [23] total 25 [2022-07-12 05:40:40,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514375420] [2022-07-12 05:40:40,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:40,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:40:40,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:40,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:40:40,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-07-12 05:40:40,853 INFO L87 Difference]: Start difference. First operand 6614 states and 10714 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 05:40:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:42,044 INFO L93 Difference]: Finished difference Result 12976 states and 21129 transitions. [2022-07-12 05:40:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:40:42,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 193 [2022-07-12 05:40:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:42,070 INFO L225 Difference]: With dead ends: 12976 [2022-07-12 05:40:42,070 INFO L226 Difference]: Without dead ends: 6469 [2022-07-12 05:40:42,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2022-07-12 05:40:42,086 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1333 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:42,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 815 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:40:42,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2022-07-12 05:40:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 6469. [2022-07-12 05:40:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6469 states, 4989 states have (on average 1.5965123271196633) internal successors, (7965), 5137 states have internal predecessors, (7965), 1088 states have call successors, (1088), 304 states have call predecessors, (1088), 391 states have return successors, (1371), 1071 states have call predecessors, (1371), 1084 states have call successors, (1371) [2022-07-12 05:40:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 10424 transitions. [2022-07-12 05:40:43,003 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 10424 transitions. Word has length 193 [2022-07-12 05:40:43,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:43,003 INFO L495 AbstractCegarLoop]: Abstraction has 6469 states and 10424 transitions. [2022-07-12 05:40:43,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 05:40:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 10424 transitions. [2022-07-12 05:40:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-12 05:40:43,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:43,007 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:43,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-07-12 05:40:43,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-12 05:40:43,208 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:43,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1594824795, now seen corresponding path program 1 times [2022-07-12 05:40:43,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:43,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881512240] [2022-07-12 05:40:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:43,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:40:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:40:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:40:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:40:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:40:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:40:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:40:43,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:43,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881512240] [2022-07-12 05:40:43,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881512240] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:43,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991675811] [2022-07-12 05:40:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:43,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:43,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:43,963 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:43,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-07-12 05:40:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:44,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 2200 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 05:40:44,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-12 05:40:44,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:40:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 05:40:44,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991675811] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:44,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 05:40:44,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23, 6] total 28 [2022-07-12 05:40:44,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344197905] [2022-07-12 05:40:44,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:44,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:40:44,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:40:44,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-07-12 05:40:44,694 INFO L87 Difference]: Start difference. First operand 6469 states and 10424 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 05:40:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:45,777 INFO L93 Difference]: Finished difference Result 6791 states and 10942 transitions. [2022-07-12 05:40:45,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:40:45,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 194 [2022-07-12 05:40:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:45,811 INFO L225 Difference]: With dead ends: 6791 [2022-07-12 05:40:45,811 INFO L226 Difference]: Without dead ends: 6777 [2022-07-12 05:40:45,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 423 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-07-12 05:40:45,819 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 67 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:45,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3704 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:40:45,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6777 states. [2022-07-12 05:40:46,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6777 to 6517. [2022-07-12 05:40:46,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6517 states, 5037 states have (on average 1.5908278737343657) internal successors, (8013), 5185 states have internal predecessors, (8013), 1088 states have call successors, (1088), 304 states have call predecessors, (1088), 391 states have return successors, (1371), 1071 states have call predecessors, (1371), 1084 states have call successors, (1371) [2022-07-12 05:40:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6517 states to 6517 states and 10472 transitions. [2022-07-12 05:40:46,787 INFO L78 Accepts]: Start accepts. Automaton has 6517 states and 10472 transitions. Word has length 194 [2022-07-12 05:40:46,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:46,787 INFO L495 AbstractCegarLoop]: Abstraction has 6517 states and 10472 transitions. [2022-07-12 05:40:46,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 05:40:46,788 INFO L276 IsEmpty]: Start isEmpty. Operand 6517 states and 10472 transitions. [2022-07-12 05:40:46,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-12 05:40:46,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:46,794 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:46,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:46,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-12 05:40:46,994 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:46,995 INFO L85 PathProgramCache]: Analyzing trace with hash 575932554, now seen corresponding path program 1 times [2022-07-12 05:40:46,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:46,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000720634] [2022-07-12 05:40:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:46,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:40:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:40:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:40:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:40:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:40:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:40:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 05:40:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 05:40:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 05:40:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 05:40:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 39 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-12 05:40:47,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:47,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000720634] [2022-07-12 05:40:47,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000720634] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:47,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579535549] [2022-07-12 05:40:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:47,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:47,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:47,900 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:47,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-07-12 05:40:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:48,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 2305 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 05:40:48,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-12 05:40:48,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:40:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-12 05:40:49,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579535549] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 05:40:49,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 05:40:49,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 9, 8] total 38 [2022-07-12 05:40:49,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180840850] [2022-07-12 05:40:49,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 05:40:49,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-07-12 05:40:49,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:49,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-07-12 05:40:49,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1286, Unknown=0, NotChecked=0, Total=1406 [2022-07-12 05:40:49,334 INFO L87 Difference]: Start difference. First operand 6517 states and 10472 transitions. Second operand has 38 states, 38 states have (on average 8.973684210526315) internal successors, (341), 29 states have internal predecessors, (341), 13 states have call successors, (66), 9 states have call predecessors, (66), 18 states have return successors, (66), 18 states have call predecessors, (66), 13 states have call successors, (66)