./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_spec3_product19.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 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:11:01,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:11:01,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:11:01,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:11:01,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:11:01,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:11:01,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:11:01,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:11:01,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:11:01,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:11:01,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:11:01,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:11:01,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:11:01,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:11:01,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:11:01,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:11:01,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:11:01,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:11:01,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:11:01,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:11:01,327 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:11:01,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:11:01,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:11:01,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:11:01,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:11:01,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:11:01,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:11:01,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:11:01,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:11:01,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:11:01,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:11:01,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:11:01,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:11:01,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:11:01,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:11:01,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:11:01,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:11:01,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:11:01,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:11:01,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:11:01,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:11:01,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:11:01,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:11:01,369 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:11:01,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:11:01,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:11:01,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:11:01,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:11:01,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:11:01,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:11:01,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:11:01,372 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:11:01,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:11:01,373 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:11:01,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:11:01,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:11:01,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:11:01,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:11:01,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:11:01,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:11:01,374 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:11:01,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:11:01,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:11:01,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:11:01,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:11:01,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:11:01,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:11:01,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:11:01,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:11:01,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:11:01,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:11:01,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:11:01,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:11:01,376 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:11:01,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:11:01,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:11:01,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 [2022-07-22 17:11:01,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:11:01,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:11:01,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:11:01,580 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:11:01,581 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:11:01,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2022-07-22 17:11:01,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b27293ea/ebab47dada204a29a9778176dc4f338d/FLAG7a383d80b [2022-07-22 17:11:02,048 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:11:02,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2022-07-22 17:11:02,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b27293ea/ebab47dada204a29a9778176dc4f338d/FLAG7a383d80b [2022-07-22 17:11:02,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b27293ea/ebab47dada204a29a9778176dc4f338d [2022-07-22 17:11:02,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:11:02,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:11:02,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:11:02,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:11:02,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:11:02,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8349a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02, skipping insertion in model container [2022-07-22 17:11:02,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:11:02,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:11:02,541 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_spec3_product19.cil.c[55726,55739] [2022-07-22 17:11:02,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:11:02,572 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:11:02,632 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_spec3_product19.cil.c[55726,55739] [2022-07-22 17:11:02,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:11:02,671 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:11:02,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02 WrapperNode [2022-07-22 17:11:02,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:11:02,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:11:02,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:11:02,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:11:02,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,752 INFO L137 Inliner]: procedures = 92, calls = 346, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1091 [2022-07-22 17:11:02,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:11:02,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:11:02,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:11:02,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:11:02,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:11:02,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:11:02,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:11:02,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:11:02,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (1/1) ... [2022-07-22 17:11:02,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:11:02,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:11:02,832 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) [2022-07-22 17:11:02,849 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 [2022-07-22 17:11:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:11:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-22 17:11:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-22 17:11:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-22 17:11:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-22 17:11:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-07-22 17:11:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-07-22 17:11:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 17:11:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 17:11:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-22 17:11:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-22 17:11:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 17:11:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 17:11:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-22 17:11:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-22 17:11:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 17:11:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 17:11:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 17:11:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 17:11:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 17:11:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 17:11:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-22 17:11:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-22 17:11:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 17:11:02,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 17:11:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 17:11:02,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 17:11:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 17:11:02,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 17:11:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-22 17:11:02,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-22 17:11:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-22 17:11:02,868 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-22 17:11:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 17:11:02,868 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 17:11:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-22 17:11:02,868 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-22 17:11:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 17:11:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 17:11:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 17:11:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 17:11:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 17:11:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 17:11:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 17:11:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 17:11:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:11:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-22 17:11:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-22 17:11:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 17:11:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 17:11:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 17:11:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 17:11:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 17:11:02,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 17:11:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:11:02,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:11:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 17:11:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 17:11:03,003 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:11:03,005 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:11:03,695 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:11:03,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:11:03,708 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:11:03,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:11:03 BoogieIcfgContainer [2022-07-22 17:11:03,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:11:03,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:11:03,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:11:03,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:11:03,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:11:02" (1/3) ... [2022-07-22 17:11:03,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c8aa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:11:03, skipping insertion in model container [2022-07-22 17:11:03,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:11:02" (2/3) ... [2022-07-22 17:11:03,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c8aa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:11:03, skipping insertion in model container [2022-07-22 17:11:03,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:11:03" (3/3) ... [2022-07-22 17:11:03,718 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2022-07-22 17:11:03,728 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:11:03,728 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:11:03,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:11:03,815 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@46e06ad7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c1fc933 [2022-07-22 17:11:03,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:11:03,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 589 states, 452 states have (on average 1.668141592920354) internal successors, (754), 470 states have internal predecessors, (754), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2022-07-22 17:11:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 17:11:03,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:03,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:03,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:03,858 INFO L85 PathProgramCache]: Analyzing trace with hash -698037258, now seen corresponding path program 1 times [2022-07-22 17:11:03,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:03,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250000931] [2022-07-22 17:11:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:03,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:11:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:11:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:11:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:11:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:11:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:11:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:11:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:04,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:04,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250000931] [2022-07-22 17:11:04,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250000931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:04,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:04,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:11:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180315422] [2022-07-22 17:11:04,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:04,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:11:04,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:04,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:11:04,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:04,574 INFO L87 Difference]: Start difference. First operand has 589 states, 452 states have (on average 1.668141592920354) internal successors, (754), 470 states have internal predecessors, (754), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:10,312 INFO L93 Difference]: Finished difference Result 1529 states and 2628 transitions. [2022-07-22 17:11:10,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:11:10,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2022-07-22 17:11:10,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:10,351 INFO L225 Difference]: With dead ends: 1529 [2022-07-22 17:11:10,352 INFO L226 Difference]: Without dead ends: 940 [2022-07-22 17:11:10,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:11:10,365 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 1737 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 5427 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 3753 SdHoareTripleChecker+Invalid, 6009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 5427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:10,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1850 Valid, 3753 Invalid, 6009 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [582 Valid, 5427 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-22 17:11:10,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-07-22 17:11:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 592. [2022-07-22 17:11:10,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 455 states have (on average 1.6593406593406594) internal successors, (755), 473 states have internal predecessors, (755), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2022-07-22 17:11:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 972 transitions. [2022-07-22 17:11:10,531 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 972 transitions. Word has length 113 [2022-07-22 17:11:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:10,532 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 972 transitions. [2022-07-22 17:11:10,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 972 transitions. [2022-07-22 17:11:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:11:10,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:10,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:10,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:11:10,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:10,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash 223175720, now seen corresponding path program 1 times [2022-07-22 17:11:10,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:10,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178800734] [2022-07-22 17:11:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:10,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:11:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:11:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 17:11:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:11:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:11:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:11:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:11:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:10,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:10,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178800734] [2022-07-22 17:11:10,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178800734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:10,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:10,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:11:10,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079296423] [2022-07-22 17:11:10,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:10,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:11:10,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:10,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:11:10,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:10,986 INFO L87 Difference]: Start difference. First operand 592 states and 972 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:16,596 INFO L93 Difference]: Finished difference Result 1519 states and 2574 transitions. [2022-07-22 17:11:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:11:16,604 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2022-07-22 17:11:16,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:16,610 INFO L225 Difference]: With dead ends: 1519 [2022-07-22 17:11:16,610 INFO L226 Difference]: Without dead ends: 943 [2022-07-22 17:11:16,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-22 17:11:16,617 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 2227 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 5416 mSolverCounterSat, 812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 3510 SdHoareTripleChecker+Invalid, 6228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 812 IncrementalHoareTripleChecker+Valid, 5416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:16,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 3510 Invalid, 6228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [812 Valid, 5416 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-22 17:11:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-07-22 17:11:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 592. [2022-07-22 17:11:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 455 states have (on average 1.6571428571428573) internal successors, (754), 473 states have internal predecessors, (754), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2022-07-22 17:11:16,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 971 transitions. [2022-07-22 17:11:16,678 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 971 transitions. Word has length 114 [2022-07-22 17:11:16,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:16,678 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 971 transitions. [2022-07-22 17:11:16,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:16,679 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 971 transitions. [2022-07-22 17:11:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:11:16,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:16,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:16,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:11:16,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:16,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:16,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1917374278, now seen corresponding path program 1 times [2022-07-22 17:11:16,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:16,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547300699] [2022-07-22 17:11:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:16,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:11:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:11:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:11:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 17:11:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:11:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:11:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:11:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:11:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:17,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:17,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547300699] [2022-07-22 17:11:17,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547300699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:17,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:17,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:11:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150252672] [2022-07-22 17:11:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:11:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:11:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:11:17,007 INFO L87 Difference]: Start difference. First operand 592 states and 971 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 17:11:20,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:20,954 INFO L93 Difference]: Finished difference Result 1510 states and 2554 transitions. [2022-07-22 17:11:20,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:11:20,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2022-07-22 17:11:20,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:20,959 INFO L225 Difference]: With dead ends: 1510 [2022-07-22 17:11:20,960 INFO L226 Difference]: Without dead ends: 903 [2022-07-22 17:11:20,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:20,968 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 2144 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 3433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:20,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 2132 Invalid, 3433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-22 17:11:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-07-22 17:11:21,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 568. [2022-07-22 17:11:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 434 states have (on average 1.6474654377880185) internal successors, (715), 450 states have internal predecessors, (715), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:11:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 928 transitions. [2022-07-22 17:11:21,021 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 928 transitions. Word has length 114 [2022-07-22 17:11:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:21,021 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 928 transitions. [2022-07-22 17:11:21,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 17:11:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 928 transitions. [2022-07-22 17:11:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 17:11:21,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:21,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:21,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:11:21,025 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:21,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1633376898, now seen corresponding path program 1 times [2022-07-22 17:11:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:21,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329291750] [2022-07-22 17:11:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:11:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 17:11:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 17:11:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:11:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:11:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:11:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:11:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:21,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:21,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329291750] [2022-07-22 17:11:21,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329291750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:21,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:21,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:11:21,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860662661] [2022-07-22 17:11:21,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:21,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:11:21,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:21,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:11:21,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:21,364 INFO L87 Difference]: Start difference. First operand 568 states and 928 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:26,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:26,452 INFO L93 Difference]: Finished difference Result 1473 states and 2485 transitions. [2022-07-22 17:11:26,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:11:26,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2022-07-22 17:11:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:26,457 INFO L225 Difference]: With dead ends: 1473 [2022-07-22 17:11:26,457 INFO L226 Difference]: Without dead ends: 897 [2022-07-22 17:11:26,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:11:26,460 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 1106 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 5446 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 5796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 5446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:26,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 3628 Invalid, 5796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 5446 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-22 17:11:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-07-22 17:11:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 562. [2022-07-22 17:11:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 428 states have (on average 1.6401869158878504) internal successors, (702), 444 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:11:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 915 transitions. [2022-07-22 17:11:26,511 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 915 transitions. Word has length 115 [2022-07-22 17:11:26,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:26,513 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 915 transitions. [2022-07-22 17:11:26,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:26,513 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 915 transitions. [2022-07-22 17:11:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 17:11:26,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:26,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:26,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:11:26,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:26,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1431168400, now seen corresponding path program 1 times [2022-07-22 17:11:26,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:26,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28620897] [2022-07-22 17:11:26,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:11:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:11:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:11:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:11:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:11:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:11:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:11:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:26,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:26,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28620897] [2022-07-22 17:11:26,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28620897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:26,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:26,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:11:26,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994273805] [2022-07-22 17:11:26,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:26,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:11:26,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:26,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:11:26,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:26,820 INFO L87 Difference]: Start difference. First operand 562 states and 915 transitions. Second operand has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:32,074 INFO L93 Difference]: Finished difference Result 1443 states and 2434 transitions. [2022-07-22 17:11:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:11:32,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-07-22 17:11:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:32,079 INFO L225 Difference]: With dead ends: 1443 [2022-07-22 17:11:32,079 INFO L226 Difference]: Without dead ends: 897 [2022-07-22 17:11:32,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:11:32,082 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 1051 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 5689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 5341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:32,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 3542 Invalid, 5689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-22 17:11:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-07-22 17:11:32,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 562. [2022-07-22 17:11:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 428 states have (on average 1.6378504672897196) internal successors, (701), 444 states have internal predecessors, (701), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:11:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 914 transitions. [2022-07-22 17:11:32,134 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 914 transitions. Word has length 116 [2022-07-22 17:11:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:32,134 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 914 transitions. [2022-07-22 17:11:32,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 914 transitions. [2022-07-22 17:11:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 17:11:32,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:32,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:32,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:11:32,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1324799585, now seen corresponding path program 1 times [2022-07-22 17:11:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:32,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214615526] [2022-07-22 17:11:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:11:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:11:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:11:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:11:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:11:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:11:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:11:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:32,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:32,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214615526] [2022-07-22 17:11:32,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214615526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:32,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:32,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:11:32,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625220604] [2022-07-22 17:11:32,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:32,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:11:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:11:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:32,423 INFO L87 Difference]: Start difference. First operand 562 states and 914 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:37,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:37,396 INFO L93 Difference]: Finished difference Result 1461 states and 2454 transitions. [2022-07-22 17:11:37,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:11:37,397 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2022-07-22 17:11:37,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:37,401 INFO L225 Difference]: With dead ends: 1461 [2022-07-22 17:11:37,401 INFO L226 Difference]: Without dead ends: 891 [2022-07-22 17:11:37,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:11:37,403 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 1612 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 5246 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 5823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 5246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:37,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 3419 Invalid, 5823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 5246 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-22 17:11:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-07-22 17:11:37,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 556. [2022-07-22 17:11:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.6303317535545023) internal successors, (688), 438 states have internal predecessors, (688), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:11:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 901 transitions. [2022-07-22 17:11:37,457 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 901 transitions. Word has length 117 [2022-07-22 17:11:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:37,458 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 901 transitions. [2022-07-22 17:11:37,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 901 transitions. [2022-07-22 17:11:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 17:11:37,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:37,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:37,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:11:37,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:37,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:37,461 INFO L85 PathProgramCache]: Analyzing trace with hash 933027153, now seen corresponding path program 1 times [2022-07-22 17:11:37,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:37,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372658086] [2022-07-22 17:11:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:37,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:11:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:11:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:11:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:11:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:11:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:11:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:11:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:37,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:37,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372658086] [2022-07-22 17:11:37,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372658086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:37,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:37,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:11:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195204009] [2022-07-22 17:11:37,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:11:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:37,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:11:37,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:37,734 INFO L87 Difference]: Start difference. First operand 556 states and 901 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:42,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:42,686 INFO L93 Difference]: Finished difference Result 1431 states and 2405 transitions. [2022-07-22 17:11:42,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:11:42,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2022-07-22 17:11:42,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:42,690 INFO L225 Difference]: With dead ends: 1431 [2022-07-22 17:11:42,690 INFO L226 Difference]: Without dead ends: 891 [2022-07-22 17:11:42,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:11:42,692 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 1018 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 5242 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 5242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:42,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 3550 Invalid, 5592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 5242 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-22 17:11:42,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-07-22 17:11:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 556. [2022-07-22 17:11:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.627962085308057) internal successors, (687), 438 states have internal predecessors, (687), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:11:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 900 transitions. [2022-07-22 17:11:42,749 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 900 transitions. Word has length 118 [2022-07-22 17:11:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:42,749 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 900 transitions. [2022-07-22 17:11:42,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 900 transitions. [2022-07-22 17:11:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-22 17:11:42,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:42,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:42,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:11:42,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1338552957, now seen corresponding path program 1 times [2022-07-22 17:11:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:42,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511650000] [2022-07-22 17:11:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:42,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:42,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:42,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:42,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:42,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:11:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:11:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:11:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:43,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:11:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:11:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:43,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:43,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:11:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:11:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:43,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:43,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511650000] [2022-07-22 17:11:43,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511650000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:43,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:43,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:11:43,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557540905] [2022-07-22 17:11:43,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:43,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:11:43,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:43,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:11:43,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:43,038 INFO L87 Difference]: Start difference. First operand 556 states and 900 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:47,997 INFO L93 Difference]: Finished difference Result 1449 states and 2423 transitions. [2022-07-22 17:11:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:11:47,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2022-07-22 17:11:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:48,001 INFO L225 Difference]: With dead ends: 1449 [2022-07-22 17:11:48,001 INFO L226 Difference]: Without dead ends: 885 [2022-07-22 17:11:48,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:11:48,003 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 1053 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 5236 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 5587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 5236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:48,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 3599 Invalid, 5587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 5236 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-22 17:11:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-07-22 17:11:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 550. [2022-07-22 17:11:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6201923076923077) internal successors, (674), 432 states have internal predecessors, (674), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:11:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 887 transitions. [2022-07-22 17:11:48,063 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 887 transitions. Word has length 119 [2022-07-22 17:11:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:48,064 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 887 transitions. [2022-07-22 17:11:48,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:48,064 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 887 transitions. [2022-07-22 17:11:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-22 17:11:48,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:48,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:48,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:11:48,066 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:48,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:48,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1479840670, now seen corresponding path program 1 times [2022-07-22 17:11:48,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:48,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115180931] [2022-07-22 17:11:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:48,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:11:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:11:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:11:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:11:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:11:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:11:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:11:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:48,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115180931] [2022-07-22 17:11:48,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115180931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:48,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:48,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:11:48,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18805298] [2022-07-22 17:11:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:48,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:11:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:11:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:48,335 INFO L87 Difference]: Start difference. First operand 550 states and 887 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:53,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:53,063 INFO L93 Difference]: Finished difference Result 1419 states and 2376 transitions. [2022-07-22 17:11:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:11:53,063 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2022-07-22 17:11:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:53,067 INFO L225 Difference]: With dead ends: 1419 [2022-07-22 17:11:53,067 INFO L226 Difference]: Without dead ends: 885 [2022-07-22 17:11:53,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:11:53,070 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 1519 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 4953 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 5535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 4953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:53,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 3519 Invalid, 5535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 4953 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-22 17:11:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-07-22 17:11:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 550. [2022-07-22 17:11:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6177884615384615) internal successors, (673), 432 states have internal predecessors, (673), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:11:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 886 transitions. [2022-07-22 17:11:53,149 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 886 transitions. Word has length 119 [2022-07-22 17:11:53,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:53,149 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 886 transitions. [2022-07-22 17:11:53,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 886 transitions. [2022-07-22 17:11:53,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 17:11:53,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:53,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:53,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:11:53,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:53,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:53,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1297194777, now seen corresponding path program 1 times [2022-07-22 17:11:53,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:53,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516696759] [2022-07-22 17:11:53,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:53,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 17:11:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 17:11:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:11:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:11:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:11:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:11:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:11:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:53,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:53,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516696759] [2022-07-22 17:11:53,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516696759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:53,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:53,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:11:53,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16672314] [2022-07-22 17:11:53,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:53,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:11:53,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:53,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:11:53,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:53,397 INFO L87 Difference]: Start difference. First operand 550 states and 886 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:58,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:58,412 INFO L93 Difference]: Finished difference Result 1431 states and 2385 transitions. [2022-07-22 17:11:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:11:58,412 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2022-07-22 17:11:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:58,418 INFO L225 Difference]: With dead ends: 1431 [2022-07-22 17:11:58,418 INFO L226 Difference]: Without dead ends: 885 [2022-07-22 17:11:58,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:11:58,421 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 1009 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 5126 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 5477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 5126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:58,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 3561 Invalid, 5477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 5126 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-22 17:11:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-07-22 17:11:58,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 550. [2022-07-22 17:11:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6153846153846154) internal successors, (672), 432 states have internal predecessors, (672), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:11:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 885 transitions. [2022-07-22 17:11:58,493 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 885 transitions. Word has length 120 [2022-07-22 17:11:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:58,493 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 885 transitions. [2022-07-22 17:11:58,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:11:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 885 transitions. [2022-07-22 17:11:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 17:11:58,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:58,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:58,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:11:58,496 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:58,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:58,496 INFO L85 PathProgramCache]: Analyzing trace with hash 244937802, now seen corresponding path program 1 times [2022-07-22 17:11:58,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:58,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557490746] [2022-07-22 17:11:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:58,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:11:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:11:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:11:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:11:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:11:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:11:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:11:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:11:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:11:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:11:58,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:58,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557490746] [2022-07-22 17:11:58,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557490746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:58,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:11:58,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:11:58,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681139766] [2022-07-22 17:11:58,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:58,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:11:58,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:11:58,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:11:58,756 INFO L87 Difference]: Start difference. First operand 550 states and 885 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:12:03,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:12:03,297 INFO L93 Difference]: Finished difference Result 1414 states and 2365 transitions. [2022-07-22 17:12:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:12:03,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2022-07-22 17:12:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:12:03,302 INFO L225 Difference]: With dead ends: 1414 [2022-07-22 17:12:03,302 INFO L226 Difference]: Without dead ends: 880 [2022-07-22 17:12:03,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:12:03,304 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1484 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 4950 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 5526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 4950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:12:03,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 3571 Invalid, 5526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 4950 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-22 17:12:03,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-07-22 17:12:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 550. [2022-07-22 17:12:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6129807692307692) internal successors, (671), 432 states have internal predecessors, (671), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:12:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 884 transitions. [2022-07-22 17:12:03,388 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 884 transitions. Word has length 121 [2022-07-22 17:12:03,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:12:03,388 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 884 transitions. [2022-07-22 17:12:03,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:12:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 884 transitions. [2022-07-22 17:12:03,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 17:12:03,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:12:03,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:12:03,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:12:03,390 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:12:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:12:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1631545016, now seen corresponding path program 1 times [2022-07-22 17:12:03,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:12:03,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235107967] [2022-07-22 17:12:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:03,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:12:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:12:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:12:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:12:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:12:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:12:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:12:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:12:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:12:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 17:12:03,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:12:03,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235107967] [2022-07-22 17:12:03,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235107967] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:12:03,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619436757] [2022-07-22 17:12:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:03,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:12:03,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:12:03,649 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) [2022-07-22 17:12:03,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:12:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:03,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:12:03,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:12:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:12:04,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:12:04,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619436757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:12:04,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:12:04,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:12:04,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606365772] [2022-07-22 17:12:04,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:12:04,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:12:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:12:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:12:04,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:12:04,009 INFO L87 Difference]: Start difference. First operand 550 states and 884 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:12:04,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:12:04,146 INFO L93 Difference]: Finished difference Result 1561 states and 2540 transitions. [2022-07-22 17:12:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:12:04,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2022-07-22 17:12:04,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:12:04,150 INFO L225 Difference]: With dead ends: 1561 [2022-07-22 17:12:04,150 INFO L226 Difference]: Without dead ends: 1029 [2022-07-22 17:12:04,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:12:04,153 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 811 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:12:04,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 2304 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:12:04,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-07-22 17:12:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1014. [2022-07-22 17:12:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 774 states have (on average 1.6253229974160206) internal successors, (1258), 805 states have internal predecessors, (1258), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 185 states have call predecessors, (193), 188 states have call successors, (193) [2022-07-22 17:12:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1642 transitions. [2022-07-22 17:12:04,288 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1642 transitions. Word has length 121 [2022-07-22 17:12:04,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:12:04,288 INFO L495 AbstractCegarLoop]: Abstraction has 1014 states and 1642 transitions. [2022-07-22 17:12:04,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:12:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1642 transitions. [2022-07-22 17:12:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 17:12:04,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:12:04,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:12:04,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 17:12:04,507 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,SelfDestructingSolverStorable11 [2022-07-22 17:12:04,507 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:12:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:12:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1816173263, now seen corresponding path program 1 times [2022-07-22 17:12:04,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:12:04,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625291428] [2022-07-22 17:12:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:04,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:12:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:12:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:12:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:12:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:12:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:12:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:12:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:12:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:12:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 17:12:04,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:12:04,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625291428] [2022-07-22 17:12:04,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625291428] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:12:04,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717033056] [2022-07-22 17:12:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:04,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:12:04,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:12:04,768 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) [2022-07-22 17:12:04,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:12:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:04,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:12:04,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:12:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:12:05,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:12:05,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717033056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:12:05,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:12:05,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:12:05,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067031347] [2022-07-22 17:12:05,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:12:05,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:12:05,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:12:05,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:12:05,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:12:05,075 INFO L87 Difference]: Start difference. First operand 1014 states and 1642 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:12:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:12:05,289 INFO L93 Difference]: Finished difference Result 2489 states and 4058 transitions. [2022-07-22 17:12:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:12:05,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2022-07-22 17:12:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:12:05,294 INFO L225 Difference]: With dead ends: 2489 [2022-07-22 17:12:05,294 INFO L226 Difference]: Without dead ends: 1493 [2022-07-22 17:12:05,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:12:05,298 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 811 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:12:05,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 2359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:12:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2022-07-22 17:12:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1445. [2022-07-22 17:12:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1105 states have (on average 1.6380090497737556) internal successors, (1810), 1151 states have internal predecessors, (1810), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 264 states have call predecessors, (278), 268 states have call successors, (278) [2022-07-22 17:12:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2359 transitions. [2022-07-22 17:12:05,496 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2359 transitions. Word has length 122 [2022-07-22 17:12:05,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:12:05,497 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2359 transitions. [2022-07-22 17:12:05,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:12:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2359 transitions. [2022-07-22 17:12:05,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 17:12:05,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:12:05,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:12:05,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:12:05,715 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,SelfDestructingSolverStorable12 [2022-07-22 17:12:05,716 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:12:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:12:05,716 INFO L85 PathProgramCache]: Analyzing trace with hash -722634999, now seen corresponding path program 1 times [2022-07-22 17:12:05,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:12:05,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540884331] [2022-07-22 17:12:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:05,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:12:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:12:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:12:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:12:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:12:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:12:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:12:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:12:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:12:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:12:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:12:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:12:05,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540884331] [2022-07-22 17:12:05,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540884331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:12:05,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:12:05,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:12:05,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958570093] [2022-07-22 17:12:05,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:12:05,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:12:05,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:12:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:12:05,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:12:05,959 INFO L87 Difference]: Start difference. First operand 1445 states and 2359 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 17:12:19,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:12:19,297 INFO L93 Difference]: Finished difference Result 7015 states and 12716 transitions. [2022-07-22 17:12:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 17:12:19,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2022-07-22 17:12:19,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:12:19,333 INFO L225 Difference]: With dead ends: 7015 [2022-07-22 17:12:19,333 INFO L226 Difference]: Without dead ends: 5588 [2022-07-22 17:12:19,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-22 17:12:19,342 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 3886 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 8182 mSolverCounterSat, 2464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4005 SdHoareTripleChecker+Valid, 4207 SdHoareTripleChecker+Invalid, 10646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2464 IncrementalHoareTripleChecker+Valid, 8182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:12:19,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4005 Valid, 4207 Invalid, 10646 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2464 Valid, 8182 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-07-22 17:12:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5588 states. [2022-07-22 17:12:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 3439. [2022-07-22 17:12:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3439 states, 2481 states have (on average 1.6082224909310763) internal successors, (3990), 2665 states have internal predecessors, (3990), 789 states have call successors, (789), 130 states have call predecessors, (789), 168 states have return successors, (1216), 787 states have call predecessors, (1216), 785 states have call successors, (1216) [2022-07-22 17:12:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 5995 transitions. [2022-07-22 17:12:20,153 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 5995 transitions. Word has length 124 [2022-07-22 17:12:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:12:20,153 INFO L495 AbstractCegarLoop]: Abstraction has 3439 states and 5995 transitions. [2022-07-22 17:12:20,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 17:12:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 5995 transitions. [2022-07-22 17:12:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 17:12:20,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:12:20,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:12:20,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:12:20,159 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:12:20,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:12:20,159 INFO L85 PathProgramCache]: Analyzing trace with hash -543075646, now seen corresponding path program 1 times [2022-07-22 17:12:20,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:12:20,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846839963] [2022-07-22 17:12:20,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:20,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:12:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:12:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:12:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:12:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:12:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:12:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:12:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:12:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:12:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 17:12:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 17:12:20,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:12:20,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846839963] [2022-07-22 17:12:20,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846839963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:12:20,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37502496] [2022-07-22 17:12:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:20,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:12:20,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:12:20,436 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) [2022-07-22 17:12:20,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:12:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:20,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 17:12:20,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:12:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:12:20,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:12:20,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37502496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:12:20,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:12:20,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:12:20,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615772398] [2022-07-22 17:12:20,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:12:20,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:12:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:12:20,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:12:20,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:12:20,789 INFO L87 Difference]: Start difference. First operand 3439 states and 5995 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 17:12:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:12:22,318 INFO L93 Difference]: Finished difference Result 10027 states and 17678 transitions. [2022-07-22 17:12:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:12:22,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2022-07-22 17:12:22,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:12:22,349 INFO L225 Difference]: With dead ends: 10027 [2022-07-22 17:12:22,349 INFO L226 Difference]: Without dead ends: 6607 [2022-07-22 17:12:22,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:12:22,369 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 722 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:12:22,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1792 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:12:22,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2022-07-22 17:12:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6570. [2022-07-22 17:12:23,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6570 states, 4712 states have (on average 1.5787351443123938) internal successors, (7439), 5078 states have internal predecessors, (7439), 1526 states have call successors, (1526), 254 states have call predecessors, (1526), 331 states have return successors, (2471), 1525 states have call predecessors, (2471), 1520 states have call successors, (2471) [2022-07-22 17:12:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 11436 transitions. [2022-07-22 17:12:23,783 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 11436 transitions. Word has length 125 [2022-07-22 17:12:23,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:12:23,784 INFO L495 AbstractCegarLoop]: Abstraction has 6570 states and 11436 transitions. [2022-07-22 17:12:23,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 17:12:23,784 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 11436 transitions. [2022-07-22 17:12:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 17:12:23,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:12:23,789 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:12:23,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:12:24,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:12:24,007 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:12:24,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:12:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1125379908, now seen corresponding path program 1 times [2022-07-22 17:12:24,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:12:24,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473992548] [2022-07-22 17:12:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:24,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:12:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:12:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:12:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:12:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:12:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:12:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:12:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:12:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:12:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:12:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:12:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 17:12:24,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:12:24,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473992548] [2022-07-22 17:12:24,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473992548] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:12:24,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647289326] [2022-07-22 17:12:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:24,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:12:24,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:12:24,274 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) [2022-07-22 17:12:24,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:12:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:24,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:12:24,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:12:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:12:24,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:12:24,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647289326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:12:24,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:12:24,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:12:24,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677873999] [2022-07-22 17:12:24,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:12:24,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:12:24,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:12:24,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:12:24,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:12:24,513 INFO L87 Difference]: Start difference. First operand 6570 states and 11436 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:12:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:12:27,308 INFO L93 Difference]: Finished difference Result 19596 states and 34417 transitions. [2022-07-22 17:12:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:12:27,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2022-07-22 17:12:27,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:12:27,364 INFO L225 Difference]: With dead ends: 19596 [2022-07-22 17:12:27,364 INFO L226 Difference]: Without dead ends: 13047 [2022-07-22 17:12:27,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:12:27,393 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 871 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:12:27,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1857 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:12:27,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13047 states. [2022-07-22 17:12:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13047 to 12944. [2022-07-22 17:12:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12944 states, 9300 states have (on average 1.5812903225806452) internal successors, (14706), 10012 states have internal predecessors, (14706), 2992 states have call successors, (2992), 490 states have call predecessors, (2992), 651 states have return successors, (4924), 3011 states have call predecessors, (4924), 2982 states have call successors, (4924) [2022-07-22 17:12:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12944 states to 12944 states and 22622 transitions. [2022-07-22 17:12:30,338 INFO L78 Accepts]: Start accepts. Automaton has 12944 states and 22622 transitions. Word has length 127 [2022-07-22 17:12:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:12:30,339 INFO L495 AbstractCegarLoop]: Abstraction has 12944 states and 22622 transitions. [2022-07-22 17:12:30,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:12:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 12944 states and 22622 transitions. [2022-07-22 17:12:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 17:12:30,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:12:30,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:12:30,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:12:30,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 17:12:30,559 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:12:30,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:12:30,560 INFO L85 PathProgramCache]: Analyzing trace with hash 114262658, now seen corresponding path program 1 times [2022-07-22 17:12:30,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:12:30,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847753794] [2022-07-22 17:12:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:30,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:12:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:12:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:12:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:12:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:12:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:12:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:12:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:12:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:12:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:12:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:12:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 17:12:30,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:12:30,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847753794] [2022-07-22 17:12:30,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847753794] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:12:30,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811629747] [2022-07-22 17:12:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:30,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:12:30,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:12:30,818 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) [2022-07-22 17:12:30,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:12:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:31,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 17:12:31,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:12:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:12:31,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:12:31,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811629747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:12:31,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:12:31,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-07-22 17:12:31,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579987832] [2022-07-22 17:12:31,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:12:31,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:12:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:12:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:12:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:12:31,143 INFO L87 Difference]: Start difference. First operand 12944 states and 22622 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 17:12:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:12:35,369 INFO L93 Difference]: Finished difference Result 26087 states and 46179 transitions. [2022-07-22 17:12:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:12:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2022-07-22 17:12:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:12:35,425 INFO L225 Difference]: With dead ends: 26087 [2022-07-22 17:12:35,425 INFO L226 Difference]: Without dead ends: 13161 [2022-07-22 17:12:35,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:12:35,478 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 908 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 4354 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:12:35,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 4354 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:12:35,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13161 states. [2022-07-22 17:12:38,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13161 to 12371. [2022-07-22 17:12:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12371 states, 8759 states have (on average 1.56364881835826) internal successors, (13696), 9470 states have internal predecessors, (13696), 3022 states have call successors, (3022), 446 states have call predecessors, (3022), 589 states have return successors, (4978), 3026 states have call predecessors, (4978), 3012 states have call successors, (4978) [2022-07-22 17:12:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12371 states to 12371 states and 21696 transitions. [2022-07-22 17:12:38,426 INFO L78 Accepts]: Start accepts. Automaton has 12371 states and 21696 transitions. Word has length 127 [2022-07-22 17:12:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:12:38,426 INFO L495 AbstractCegarLoop]: Abstraction has 12371 states and 21696 transitions. [2022-07-22 17:12:38,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 17:12:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand 12371 states and 21696 transitions. [2022-07-22 17:12:38,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 17:12:38,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:12:38,430 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:12:38,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:12:38,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 17:12:38,643 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:12:38,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:12:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash 434819636, now seen corresponding path program 1 times [2022-07-22 17:12:38,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:12:38,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095411300] [2022-07-22 17:12:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:12:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:12:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:12:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:12:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:12:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:12:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:12:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:12:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:12:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:12:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:12:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 17:12:38,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:12:38,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095411300] [2022-07-22 17:12:38,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095411300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:12:38,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:12:38,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:12:38,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725576197] [2022-07-22 17:12:38,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:12:38,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:12:38,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:12:38,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:12:38,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:12:38,854 INFO L87 Difference]: Start difference. First operand 12371 states and 21696 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:12:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:12:47,206 INFO L93 Difference]: Finished difference Result 28064 states and 50947 transitions. [2022-07-22 17:12:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:12:47,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2022-07-22 17:12:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:12:47,292 INFO L225 Difference]: With dead ends: 28064 [2022-07-22 17:12:47,292 INFO L226 Difference]: Without dead ends: 15711 [2022-07-22 17:12:47,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:12:47,382 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 1496 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 3030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:12:47,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 2087 Invalid, 3030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-22 17:12:47,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15711 states. [2022-07-22 17:12:50,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15711 to 11849. [2022-07-22 17:12:50,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11849 states, 8543 states have (on average 1.5601076905068476) internal successors, (13328), 9162 states have internal predecessors, (13328), 2696 states have call successors, (2696), 454 states have call predecessors, (2696), 609 states have return successors, (4477), 2692 states have call predecessors, (4477), 2686 states have call successors, (4477) [2022-07-22 17:12:50,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11849 states to 11849 states and 20501 transitions. [2022-07-22 17:12:50,196 INFO L78 Accepts]: Start accepts. Automaton has 11849 states and 20501 transitions. Word has length 127 [2022-07-22 17:12:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:12:50,197 INFO L495 AbstractCegarLoop]: Abstraction has 11849 states and 20501 transitions. [2022-07-22 17:12:50,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:12:50,198 INFO L276 IsEmpty]: Start isEmpty. Operand 11849 states and 20501 transitions. [2022-07-22 17:12:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-22 17:12:50,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:12:50,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:12:50,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:12:50,201 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:12:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:12:50,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1164591274, now seen corresponding path program 1 times [2022-07-22 17:12:50,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:12:50,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903289958] [2022-07-22 17:12:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:12:50,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:12:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:12:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:12:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:12:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:12:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:12:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:12:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:12:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:12:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:12:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:12:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:12:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 17:12:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 17:12:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:12:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 17:12:50,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:12:50,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903289958] [2022-07-22 17:12:50,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903289958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:12:50,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:12:50,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:12:50,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415565207] [2022-07-22 17:12:50,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:12:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:12:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:12:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:12:50,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:12:50,520 INFO L87 Difference]: Start difference. First operand 11849 states and 20501 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:13:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:13:17,132 INFO L93 Difference]: Finished difference Result 50976 states and 99445 transitions. [2022-07-22 17:13:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 17:13:17,133 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2022-07-22 17:13:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:13:17,370 INFO L225 Difference]: With dead ends: 50976 [2022-07-22 17:13:17,370 INFO L226 Difference]: Without dead ends: 39145 [2022-07-22 17:13:17,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-22 17:13:17,457 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 3923 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 8450 mSolverCounterSat, 2496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4042 SdHoareTripleChecker+Valid, 4303 SdHoareTripleChecker+Invalid, 10946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2496 IncrementalHoareTripleChecker+Valid, 8450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:13:17,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4042 Valid, 4303 Invalid, 10946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2496 Valid, 8450 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-07-22 17:13:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39145 states. [2022-07-22 17:13:23,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39145 to 23561. [2022-07-22 17:13:23,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23561 states, 16992 states have (on average 1.557026836158192) internal successors, (26457), 18221 states have internal predecessors, (26457), 5347 states have call successors, (5347), 902 states have call predecessors, (5347), 1221 states have return successors, (9811), 5357 states have call predecessors, (9811), 5329 states have call successors, (9811) [2022-07-22 17:13:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23561 states to 23561 states and 41615 transitions. [2022-07-22 17:13:23,837 INFO L78 Accepts]: Start accepts. Automaton has 23561 states and 41615 transitions. Word has length 135 [2022-07-22 17:13:23,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:13:23,837 INFO L495 AbstractCegarLoop]: Abstraction has 23561 states and 41615 transitions. [2022-07-22 17:13:23,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:13:23,837 INFO L276 IsEmpty]: Start isEmpty. Operand 23561 states and 41615 transitions. [2022-07-22 17:13:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 17:13:23,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:13:23,841 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:13:23,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:13:23,841 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:13:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:13:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash -727529201, now seen corresponding path program 1 times [2022-07-22 17:13:23,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:13:23,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581131044] [2022-07-22 17:13:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:13:23,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:13:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:13:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:13:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:13:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:13:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:13:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:13:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:13:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:13:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:13:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:13:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 17:13:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:13:24,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:13:24,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581131044] [2022-07-22 17:13:24,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581131044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:13:24,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:13:24,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:13:24,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406798893] [2022-07-22 17:13:24,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:13:24,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:13:24,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:13:24,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:13:24,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:13:24,090 INFO L87 Difference]: Start difference. First operand 23561 states and 41615 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:13:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:13:36,524 INFO L93 Difference]: Finished difference Result 52795 states and 98938 transitions. [2022-07-22 17:13:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:13:36,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2022-07-22 17:13:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:13:36,649 INFO L225 Difference]: With dead ends: 52795 [2022-07-22 17:13:36,649 INFO L226 Difference]: Without dead ends: 29252 [2022-07-22 17:13:36,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:13:36,782 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 983 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:13:36,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 2150 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-22 17:13:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29252 states. [2022-07-22 17:13:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29252 to 23641. [2022-07-22 17:13:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23641 states, 17064 states have (on average 1.5551453352086264) internal successors, (26537), 18277 states have internal predecessors, (26537), 5347 states have call successors, (5347), 934 states have call predecessors, (5347), 1229 states have return successors, (9771), 5349 states have call predecessors, (9771), 5329 states have call successors, (9771) [2022-07-22 17:13:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23641 states to 23641 states and 41655 transitions. [2022-07-22 17:13:42,957 INFO L78 Accepts]: Start accepts. Automaton has 23641 states and 41655 transitions. Word has length 136 [2022-07-22 17:13:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:13:42,958 INFO L495 AbstractCegarLoop]: Abstraction has 23641 states and 41655 transitions. [2022-07-22 17:13:42,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 17:13:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand 23641 states and 41655 transitions. [2022-07-22 17:13:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:13:42,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:13:42,962 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:13:42,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:13:42,962 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:13:42,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:13:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash -23302574, now seen corresponding path program 1 times [2022-07-22 17:13:42,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:13:42,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723083850] [2022-07-22 17:13:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:13:42,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:13:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:13:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:13:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:13:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:13:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:13:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:13:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:13:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:13:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:13:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:13:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:13:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:13:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 17:13:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 17:13:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:13:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:13:43,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:13:43,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723083850] [2022-07-22 17:13:43,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723083850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:13:43,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:13:43,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:13:43,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336501435] [2022-07-22 17:13:43,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:13:43,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:13:43,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:13:43,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:13:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:13:43,200 INFO L87 Difference]: Start difference. First operand 23641 states and 41655 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 17:14:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:14:25,103 INFO L93 Difference]: Finished difference Result 101260 states and 210217 transitions. [2022-07-22 17:14:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 17:14:25,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2022-07-22 17:14:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:14:25,817 INFO L225 Difference]: With dead ends: 101260 [2022-07-22 17:14:25,817 INFO L226 Difference]: Without dead ends: 77637 [2022-07-22 17:14:26,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-22 17:14:26,013 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 2884 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 8657 mSolverCounterSat, 2028 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3004 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 10685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2028 IncrementalHoareTripleChecker+Valid, 8657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:14:26,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3004 Valid, 4386 Invalid, 10685 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2028 Valid, 8657 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-07-22 17:14:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77637 states. [2022-07-22 17:14:39,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77637 to 47221. [2022-07-22 17:14:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47221 states, 34091 states have (on average 1.552257193980816) internal successors, (52918), 36508 states have internal predecessors, (52918), 10660 states have call successors, (10660), 1862 states have call predecessors, (10660), 2469 states have return successors, (22057), 10690 states have call predecessors, (22057), 10626 states have call successors, (22057) [2022-07-22 17:14:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47221 states to 47221 states and 85635 transitions. [2022-07-22 17:14:39,737 INFO L78 Accepts]: Start accepts. Automaton has 47221 states and 85635 transitions. Word has length 145 [2022-07-22 17:14:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:14:39,737 INFO L495 AbstractCegarLoop]: Abstraction has 47221 states and 85635 transitions. [2022-07-22 17:14:39,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 17:14:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 47221 states and 85635 transitions. [2022-07-22 17:14:39,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 17:14:39,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:14:39,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:14:39,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:14:39,742 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:14:39,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:14:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1492677595, now seen corresponding path program 1 times [2022-07-22 17:14:39,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:14:39,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293600503] [2022-07-22 17:14:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:14:39,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:14:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:14:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:14:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:14:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:14:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:14:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:14:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:14:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:14:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:14:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:14:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:14:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:14:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 17:14:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 17:14:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:14:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 17:14:39,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:14:39,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293600503] [2022-07-22 17:14:39,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293600503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:14:39,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:14:39,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:14:39,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005166851] [2022-07-22 17:14:39,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:14:39,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:14:39,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:14:39,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:14:39,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:14:39,982 INFO L87 Difference]: Start difference. First operand 47221 states and 85635 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 17:15:02,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:02,865 INFO L93 Difference]: Finished difference Result 105625 states and 209603 transitions. [2022-07-22 17:15:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:15:02,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2022-07-22 17:15:02,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:03,438 INFO L225 Difference]: With dead ends: 105625 [2022-07-22 17:15:03,438 INFO L226 Difference]: Without dead ends: 58422 [2022-07-22 17:15:03,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:15:03,918 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 2007 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:03,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 2022 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 17:15:03,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58422 states.