./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.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 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:32:52,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:32:52,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:32:52,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:32:52,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:32:52,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:32:52,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:32:52,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:32:52,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:32:52,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:32:52,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:32:52,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:32:52,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:32:52,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:32:52,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:32:52,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:32:52,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:32:52,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:32:52,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:32:52,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:32:52,725 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:32:52,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:32:52,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:32:52,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:32:52,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:32:52,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:32:52,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:32:52,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:32:52,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:32:52,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:32:52,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:32:52,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:32:52,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:32:52,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:32:52,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:32:52,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:32:52,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:32:52,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:32:52,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:32:52,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:32:52,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:32:52,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:32:52,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:32:52,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:32:52,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:32:52,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:32:52,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:32:52,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:32:52,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:32:52,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:32:52,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:32:52,764 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:32:52,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:32:52,764 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:32:52,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:32:52,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:32:52,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:32:52,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:32:52,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:32:52,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:32:52,765 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:32:52,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:32:52,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:32:52,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:32:52,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:32:52,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:32:52,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:32:52,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:32:52,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:32:52,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:32:52,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:32:52,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:32:52,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:32:52,767 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:32:52,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:32:52,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:32:52,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 [2022-07-13 11:32:52,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:32:52,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:32:52,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:32:52,964 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:32:52,965 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:32:52,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2022-07-13 11:32:53,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2387c2bda/85ec9543ea064231a04a96a67eda1977/FLAGd95009a59 [2022-07-13 11:32:53,559 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:32:53,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2022-07-13 11:32:53,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2387c2bda/85ec9543ea064231a04a96a67eda1977/FLAGd95009a59 [2022-07-13 11:32:54,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2387c2bda/85ec9543ea064231a04a96a67eda1977 [2022-07-13 11:32:54,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:32:54,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:32:54,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:32:54,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:32:54,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:32:54,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:32:54" (1/1) ... [2022-07-13 11:32:54,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7840a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:54, skipping insertion in model container [2022-07-13 11:32:54,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:32:54" (1/1) ... [2022-07-13 11:32:54,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:32:54,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:32:54,559 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/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-07-13 11:32:54,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:32:54,822 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:32:54,849 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/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-07-13 11:32:55,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:32:55,076 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:32:55,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55 WrapperNode [2022-07-13 11:32:55,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:32:55,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:32:55,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:32:55,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:32:55,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (1/1) ... [2022-07-13 11:32:55,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (1/1) ... [2022-07-13 11:32:55,265 INFO L137 Inliner]: procedures = 126, calls = 2874, calls flagged for inlining = 36, calls inlined = 25, statements flattened = 3043 [2022-07-13 11:32:55,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:32:55,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:32:55,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:32:55,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:32:55,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (1/1) ... [2022-07-13 11:32:55,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (1/1) ... [2022-07-13 11:32:55,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (1/1) ... [2022-07-13 11:32:55,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (1/1) ... [2022-07-13 11:32:55,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (1/1) ... [2022-07-13 11:32:55,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (1/1) ... [2022-07-13 11:32:55,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (1/1) ... [2022-07-13 11:32:55,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:32:55,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:32:55,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:32:55,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:32:55,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (1/1) ... [2022-07-13 11:32:55,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:32:55,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:32:55,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 11:32:55,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 11:32:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-07-13 11:32:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-07-13 11:32:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-13 11:32:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-13 11:32:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-13 11:32:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:32:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-13 11:32:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-13 11:32:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-13 11:32:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-13 11:32:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-07-13 11:32:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-07-13 11:32:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-07-13 11:32:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-07-13 11:32:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:32:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-07-13 11:32:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-07-13 11:32:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-07-13 11:32:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-07-13 11:32:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-07-13 11:32:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-07-13 11:32:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-13 11:32:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-13 11:32:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-13 11:32:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-13 11:32:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-07-13 11:32:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-07-13 11:32:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-07-13 11:32:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-07-13 11:32:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:32:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:32:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-07-13 11:32:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-07-13 11:32:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-07-13 11:32:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-07-13 11:32:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 11:32:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 11:32:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-07-13 11:32:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-07-13 11:32:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 11:32:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-07-13 11:32:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-07-13 11:32:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 11:32:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-07-13 11:32:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-07-13 11:32:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:32:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-07-13 11:32:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-07-13 11:32:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-13 11:32:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-07-13 11:32:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-07-13 11:32:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:32:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:32:55,835 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:32:55,837 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:32:55,888 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:55,903 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-13 11:32:55,903 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-13 11:32:55,905 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,028 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-07-13 11:32:56,028 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-07-13 11:32:56,050 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,064 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-07-13 11:32:56,064 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-07-13 11:32:56,142 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,168 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-07-13 11:32:56,168 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-07-13 11:32:56,169 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,170 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,170 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,254 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-07-13 11:32:56,254 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-07-13 11:32:56,254 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-07-13 11:32:56,254 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-07-13 11:32:56,254 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-07-13 11:32:56,254 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-07-13 11:32:56,256 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,259 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,281 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,553 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-07-13 11:32:56,554 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-07-13 11:32:56,554 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-07-13 11:32:56,554 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-07-13 11:32:56,554 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2022-07-13 11:32:56,554 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2022-07-13 11:32:56,572 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,592 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-13 11:32:56,592 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-13 11:32:56,597 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,597 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,598 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,600 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,600 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,634 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,635 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:56,636 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:32:59,707 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2022-07-13 11:32:59,708 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2022-07-13 11:32:59,709 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2022-07-13 11:32:59,709 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2022-07-13 11:32:59,716 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:32:59,731 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:32:59,731 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 11:32:59,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:32:59 BoogieIcfgContainer [2022-07-13 11:32:59,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:32:59,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:32:59,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:32:59,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:32:59,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:32:54" (1/3) ... [2022-07-13 11:32:59,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131b402f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:32:59, skipping insertion in model container [2022-07-13 11:32:59,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:32:55" (2/3) ... [2022-07-13 11:32:59,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131b402f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:32:59, skipping insertion in model container [2022-07-13 11:32:59,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:32:59" (3/3) ... [2022-07-13 11:32:59,744 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-07-13 11:32:59,754 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:32:59,755 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:32:59,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:32:59,818 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@3070b1b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ea27f53 [2022-07-13 11:32:59,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:32:59,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 564 states, 453 states have (on average 1.5011037527593818) internal successors, (680), 486 states have internal predecessors, (680), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2022-07-13 11:32:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 11:32:59,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:32:59,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:32:59,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:32:59,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:32:59,835 INFO L85 PathProgramCache]: Analyzing trace with hash -197079634, now seen corresponding path program 1 times [2022-07-13 11:32:59,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:32:59,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260244335] [2022-07-13 11:32:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:32:59,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:00,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:00,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:00,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260244335] [2022-07-13 11:33:00,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260244335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:00,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:00,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:33:00,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379214757] [2022-07-13 11:33:00,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:00,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:33:00,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:00,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:33:00,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:00,360 INFO L87 Difference]: Start difference. First operand has 564 states, 453 states have (on average 1.5011037527593818) internal successors, (680), 486 states have internal predecessors, (680), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 11:33:04,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:04,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:04,199 INFO L93 Difference]: Finished difference Result 1130 states and 1773 transitions. [2022-07-13 11:33:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:33:04,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-07-13 11:33:04,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:04,211 INFO L225 Difference]: With dead ends: 1130 [2022-07-13 11:33:04,211 INFO L226 Difference]: Without dead ends: 639 [2022-07-13 11:33:04,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:33:04,219 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 393 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 226 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:04,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 2105 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 757 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-07-13 11:33:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-13 11:33:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2022-07-13 11:33:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 452 states have (on average 1.4623893805309736) internal successors, (661), 483 states have internal predecessors, (661), 90 states have call successors, (90), 21 states have call predecessors, (90), 20 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2022-07-13 11:33:04,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 818 transitions. [2022-07-13 11:33:04,281 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 818 transitions. Word has length 26 [2022-07-13 11:33:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:04,281 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 818 transitions. [2022-07-13 11:33:04,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 11:33:04,281 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 818 transitions. [2022-07-13 11:33:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 11:33:04,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:04,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:04,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:33:04,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:04,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash -169212496, now seen corresponding path program 1 times [2022-07-13 11:33:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:04,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597216009] [2022-07-13 11:33:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:04,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:04,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:04,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:04,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597216009] [2022-07-13 11:33:04,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597216009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:04,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:04,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 11:33:04,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613947577] [2022-07-13 11:33:04,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:04,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 11:33:04,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 11:33:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:33:04,439 INFO L87 Difference]: Start difference. First operand 563 states and 818 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:33:07,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:07,985 INFO L93 Difference]: Finished difference Result 1183 states and 1738 transitions. [2022-07-13 11:33:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 11:33:07,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-07-13 11:33:07,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:07,997 INFO L225 Difference]: With dead ends: 1183 [2022-07-13 11:33:07,998 INFO L226 Difference]: Without dead ends: 639 [2022-07-13 11:33:07,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 11:33:08,000 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 359 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 218 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:08,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 2703 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 11:33:08,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-13 11:33:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2022-07-13 11:33:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 452 states have (on average 1.4601769911504425) internal successors, (660), 483 states have internal predecessors, (660), 90 states have call successors, (90), 21 states have call predecessors, (90), 20 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2022-07-13 11:33:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 817 transitions. [2022-07-13 11:33:08,035 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 817 transitions. Word has length 29 [2022-07-13 11:33:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:08,035 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 817 transitions. [2022-07-13 11:33:08,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:33:08,036 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 817 transitions. [2022-07-13 11:33:08,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 11:33:08,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:08,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:08,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:33:08,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1081663514, now seen corresponding path program 1 times [2022-07-13 11:33:08,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:08,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461609907] [2022-07-13 11:33:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:08,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:08,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:08,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:08,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461609907] [2022-07-13 11:33:08,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461609907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:08,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:08,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:33:08,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131221594] [2022-07-13 11:33:08,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:08,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:33:08,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:08,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:33:08,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:08,203 INFO L87 Difference]: Start difference. First operand 563 states and 817 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:33:11,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:12,149 INFO L93 Difference]: Finished difference Result 1494 states and 2232 transitions. [2022-07-13 11:33:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:33:12,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2022-07-13 11:33:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:12,155 INFO L225 Difference]: With dead ends: 1494 [2022-07-13 11:33:12,155 INFO L226 Difference]: Without dead ends: 1093 [2022-07-13 11:33:12,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:33:12,157 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 1298 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 407 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:12,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 2368 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 997 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-07-13 11:33:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2022-07-13 11:33:12,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 979. [2022-07-13 11:33:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 813 states have (on average 1.4452644526445264) internal successors, (1175), 840 states have internal predecessors, (1175), 124 states have call successors, (124), 38 states have call predecessors, (124), 41 states have return successors, (147), 108 states have call predecessors, (147), 109 states have call successors, (147) [2022-07-13 11:33:12,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1446 transitions. [2022-07-13 11:33:12,194 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1446 transitions. Word has length 33 [2022-07-13 11:33:12,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:12,194 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1446 transitions. [2022-07-13 11:33:12,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:33:12,195 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1446 transitions. [2022-07-13 11:33:12,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 11:33:12,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:12,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:12,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:33:12,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1331144769, now seen corresponding path program 1 times [2022-07-13 11:33:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:12,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481065471] [2022-07-13 11:33:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:12,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 11:33:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:12,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:12,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481065471] [2022-07-13 11:33:12,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481065471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:12,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:12,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:33:12,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527593705] [2022-07-13 11:33:12,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:12,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:33:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:12,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:33:12,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:12,482 INFO L87 Difference]: Start difference. First operand 979 states and 1446 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 11:33:15,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:16,421 INFO L93 Difference]: Finished difference Result 1814 states and 2766 transitions. [2022-07-13 11:33:16,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:33:16,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-07-13 11:33:16,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:16,429 INFO L225 Difference]: With dead ends: 1814 [2022-07-13 11:33:16,430 INFO L226 Difference]: Without dead ends: 1796 [2022-07-13 11:33:16,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:33:16,432 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 1429 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 386 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:16,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1999 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 789 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-07-13 11:33:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2022-07-13 11:33:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1569. [2022-07-13 11:33:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1311 states have (on average 1.4683447749809306) internal successors, (1925), 1356 states have internal predecessors, (1925), 189 states have call successors, (189), 61 states have call predecessors, (189), 68 states have return successors, (250), 164 states have call predecessors, (250), 174 states have call successors, (250) [2022-07-13 11:33:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2364 transitions. [2022-07-13 11:33:16,495 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2364 transitions. Word has length 45 [2022-07-13 11:33:16,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:16,495 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2364 transitions. [2022-07-13 11:33:16,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 11:33:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2364 transitions. [2022-07-13 11:33:16,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 11:33:16,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:16,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:16,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:33:16,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:16,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1069708837, now seen corresponding path program 1 times [2022-07-13 11:33:16,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:16,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963678376] [2022-07-13 11:33:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:16,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:16,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:16,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:16,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963678376] [2022-07-13 11:33:16,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963678376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:16,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:16,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:33:16,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405879684] [2022-07-13 11:33:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:16,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:33:16,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:16,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:33:16,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:16,697 INFO L87 Difference]: Start difference. First operand 1569 states and 2364 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:33:19,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:20,301 INFO L93 Difference]: Finished difference Result 1793 states and 2748 transitions. [2022-07-13 11:33:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:33:20,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-07-13 11:33:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:20,308 INFO L225 Difference]: With dead ends: 1793 [2022-07-13 11:33:20,308 INFO L226 Difference]: Without dead ends: 1789 [2022-07-13 11:33:20,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:33:20,310 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 460 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 234 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:20,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1992 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 744 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 11:33:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2022-07-13 11:33:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1602. [2022-07-13 11:33:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1342 states have (on average 1.4679582712369597) internal successors, (1970), 1384 states have internal predecessors, (1970), 190 states have call successors, (190), 63 states have call predecessors, (190), 69 states have return successors, (251), 165 states have call predecessors, (251), 175 states have call successors, (251) [2022-07-13 11:33:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2411 transitions. [2022-07-13 11:33:20,355 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2411 transitions. Word has length 43 [2022-07-13 11:33:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:20,356 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2411 transitions. [2022-07-13 11:33:20,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:33:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2411 transitions. [2022-07-13 11:33:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 11:33:20,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:20,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:20,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:33:20,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash -897411344, now seen corresponding path program 1 times [2022-07-13 11:33:20,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:20,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873337679] [2022-07-13 11:33:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:20,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:20,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873337679] [2022-07-13 11:33:20,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873337679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:20,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:20,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:33:20,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432577329] [2022-07-13 11:33:20,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:20,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:33:20,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:33:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:20,517 INFO L87 Difference]: Start difference. First operand 1602 states and 2411 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:33:23,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:25,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:26,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:26,979 INFO L93 Difference]: Finished difference Result 3169 states and 4941 transitions. [2022-07-13 11:33:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:33:26,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-07-13 11:33:26,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:26,991 INFO L225 Difference]: With dead ends: 3169 [2022-07-13 11:33:26,991 INFO L226 Difference]: Without dead ends: 3166 [2022-07-13 11:33:26,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:33:26,993 INFO L413 NwaCegarLoop]: 1138 mSDtfsCounter, 901 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 297 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:26,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 2877 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1143 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-07-13 11:33:26,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2022-07-13 11:33:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 2550. [2022-07-13 11:33:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2173 states have (on average 1.4832029452369995) internal successors, (3223), 2225 states have internal predecessors, (3223), 266 states have call successors, (266), 99 states have call predecessors, (266), 110 states have return successors, (392), 236 states have call predecessors, (392), 251 states have call successors, (392) [2022-07-13 11:33:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3881 transitions. [2022-07-13 11:33:27,071 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3881 transitions. Word has length 45 [2022-07-13 11:33:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:27,071 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3881 transitions. [2022-07-13 11:33:27,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:33:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3881 transitions. [2022-07-13 11:33:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 11:33:27,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:27,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:27,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:33:27,074 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:27,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:27,074 INFO L85 PathProgramCache]: Analyzing trace with hash -285485209, now seen corresponding path program 1 times [2022-07-13 11:33:27,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:27,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271506846] [2022-07-13 11:33:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:27,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:27,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 11:33:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:33:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:27,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:27,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:27,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271506846] [2022-07-13 11:33:27,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271506846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:27,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:27,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 11:33:27,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296559648] [2022-07-13 11:33:27,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:27,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:33:27,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:33:27,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:33:27,299 INFO L87 Difference]: Start difference. First operand 2550 states and 3881 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 11:33:31,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:32,618 INFO L93 Difference]: Finished difference Result 3798 states and 5980 transitions. [2022-07-13 11:33:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 11:33:32,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-07-13 11:33:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:32,632 INFO L225 Difference]: With dead ends: 3798 [2022-07-13 11:33:32,632 INFO L226 Difference]: Without dead ends: 3790 [2022-07-13 11:33:32,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2022-07-13 11:33:32,634 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2650 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 1070 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 3085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1070 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:32,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2710 Valid, 3188 Invalid, 3085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1070 Valid, 2014 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-07-13 11:33:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2022-07-13 11:33:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3139. [2022-07-13 11:33:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2670 states have (on average 1.4876404494382023) internal successors, (3972), 2741 states have internal predecessors, (3972), 332 states have call successors, (332), 116 states have call predecessors, (332), 136 states have return successors, (525), 292 states have call predecessors, (525), 317 states have call successors, (525) [2022-07-13 11:33:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4829 transitions. [2022-07-13 11:33:32,726 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4829 transitions. Word has length 47 [2022-07-13 11:33:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:32,726 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 4829 transitions. [2022-07-13 11:33:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 11:33:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4829 transitions. [2022-07-13 11:33:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 11:33:32,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:32,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:32,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:33:32,728 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1518670529, now seen corresponding path program 1 times [2022-07-13 11:33:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:32,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629620146] [2022-07-13 11:33:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:32,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:32,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:32,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 11:33:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:32,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:32,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629620146] [2022-07-13 11:33:32,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629620146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:32,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:32,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:33:32,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725772249] [2022-07-13 11:33:32,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:32,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:33:32,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:32,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:33:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:32,891 INFO L87 Difference]: Start difference. First operand 3139 states and 4829 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 11:33:35,829 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:38,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:38,904 INFO L93 Difference]: Finished difference Result 9987 states and 15921 transitions. [2022-07-13 11:33:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:33:38,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2022-07-13 11:33:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:38,931 INFO L225 Difference]: With dead ends: 9987 [2022-07-13 11:33:38,931 INFO L226 Difference]: Without dead ends: 7066 [2022-07-13 11:33:38,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:33:38,946 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 1297 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 339 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:38,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 2361 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-07-13 11:33:38,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7066 states. [2022-07-13 11:33:39,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7066 to 6230. [2022-07-13 11:33:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6230 states, 5324 states have (on average 1.5005634861006762) internal successors, (7989), 5487 states have internal predecessors, (7989), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2022-07-13 11:33:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 9775 transitions. [2022-07-13 11:33:39,189 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 9775 transitions. Word has length 46 [2022-07-13 11:33:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:39,189 INFO L495 AbstractCegarLoop]: Abstraction has 6230 states and 9775 transitions. [2022-07-13 11:33:39,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 11:33:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 9775 transitions. [2022-07-13 11:33:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 11:33:39,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:39,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:39,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:33:39,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:39,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2006170664, now seen corresponding path program 1 times [2022-07-13 11:33:39,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:39,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554414565] [2022-07-13 11:33:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:39,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:39,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:39,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:39,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554414565] [2022-07-13 11:33:39,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554414565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:39,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:39,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 11:33:39,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960531016] [2022-07-13 11:33:39,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:39,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 11:33:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:39,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 11:33:39,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:33:39,372 INFO L87 Difference]: Start difference. First operand 6230 states and 9775 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 11:33:42,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:44,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:45,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:45,683 INFO L93 Difference]: Finished difference Result 13181 states and 20868 transitions. [2022-07-13 11:33:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 11:33:45,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-07-13 11:33:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:45,722 INFO L225 Difference]: With dead ends: 13181 [2022-07-13 11:33:45,722 INFO L226 Difference]: Without dead ends: 7261 [2022-07-13 11:33:45,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-13 11:33:45,758 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 2164 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 693 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:45,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 2270 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 1137 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-07-13 11:33:45,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2022-07-13 11:33:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 6221. [2022-07-13 11:33:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 5315 states have (on average 1.4991533396048917) internal successors, (7968), 5478 states have internal predecessors, (7968), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2022-07-13 11:33:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9754 transitions. [2022-07-13 11:33:46,007 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9754 transitions. Word has length 46 [2022-07-13 11:33:46,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:46,008 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9754 transitions. [2022-07-13 11:33:46,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 11:33:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9754 transitions. [2022-07-13 11:33:46,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-13 11:33:46,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:46,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:46,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:33:46,010 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:46,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:46,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1859253020, now seen corresponding path program 1 times [2022-07-13 11:33:46,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:46,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127632636] [2022-07-13 11:33:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:46,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:46,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:46,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:46,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 11:33:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:33:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:46,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:46,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127632636] [2022-07-13 11:33:46,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127632636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:46,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:46,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 11:33:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397467441] [2022-07-13 11:33:46,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:46,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:33:46,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:33:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:33:46,223 INFO L87 Difference]: Start difference. First operand 6221 states and 9754 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 11:33:49,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:51,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:51,797 INFO L93 Difference]: Finished difference Result 7131 states and 11388 transitions. [2022-07-13 11:33:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 11:33:51,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-07-13 11:33:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:51,816 INFO L225 Difference]: With dead ends: 7131 [2022-07-13 11:33:51,817 INFO L226 Difference]: Without dead ends: 7126 [2022-07-13 11:33:51,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2022-07-13 11:33:51,819 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 2454 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 925 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:51,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2516 Valid, 3131 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 2011 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-07-13 11:33:51,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2022-07-13 11:33:52,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6221. [2022-07-13 11:33:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 5315 states have (on average 1.4989651928504233) internal successors, (7967), 5478 states have internal predecessors, (7967), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2022-07-13 11:33:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9753 transitions. [2022-07-13 11:33:52,049 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9753 transitions. Word has length 49 [2022-07-13 11:33:52,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:52,049 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9753 transitions. [2022-07-13 11:33:52,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 11:33:52,050 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9753 transitions. [2022-07-13 11:33:52,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-13 11:33:52,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:52,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:52,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:33:52,052 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:52,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash -611856162, now seen corresponding path program 1 times [2022-07-13 11:33:52,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:52,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830244557] [2022-07-13 11:33:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:52,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 11:33:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 11:33:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:33:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:52,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:52,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830244557] [2022-07-13 11:33:52,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830244557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:52,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:52,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 11:33:52,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411370495] [2022-07-13 11:33:52,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:52,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 11:33:52,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 11:33:52,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 11:33:52,431 INFO L87 Difference]: Start difference. First operand 6221 states and 9753 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 11:33:56,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:58,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:59,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:59,367 INFO L93 Difference]: Finished difference Result 13280 states and 21298 transitions. [2022-07-13 11:33:59,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 11:33:59,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-07-13 11:33:59,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:59,387 INFO L225 Difference]: With dead ends: 13280 [2022-07-13 11:33:59,387 INFO L226 Difference]: Without dead ends: 7024 [2022-07-13 11:33:59,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-13 11:33:59,412 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 657 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 261 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:59,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 2979 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1720 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-07-13 11:33:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2022-07-13 11:33:59,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6248. [2022-07-13 11:33:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6248 states, 5340 states have (on average 1.496629213483146) internal successors, (7992), 5505 states have internal predecessors, (7992), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2022-07-13 11:33:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 9783 transitions. [2022-07-13 11:33:59,645 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 9783 transitions. Word has length 49 [2022-07-13 11:33:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:59,645 INFO L495 AbstractCegarLoop]: Abstraction has 6248 states and 9783 transitions. [2022-07-13 11:33:59,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 11:33:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 9783 transitions. [2022-07-13 11:33:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-13 11:33:59,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:59,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:59,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:33:59,647 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:59,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1052684790, now seen corresponding path program 1 times [2022-07-13 11:33:59,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:59,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004286863] [2022-07-13 11:33:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:59,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:33:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 11:33:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:59,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 11:33:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:33:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:59,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:59,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004286863] [2022-07-13 11:33:59,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004286863] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:33:59,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766143977] [2022-07-13 11:33:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:59,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:33:59,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:33:59,970 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) [2022-07-13 11:34:00,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:34:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:00,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 11:34:00,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:34:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:34:00,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:34:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:34:00,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766143977] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:34:00,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 11:34:00,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-13 11:34:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375670384] [2022-07-13 11:34:00,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 11:34:00,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 11:34:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:34:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 11:34:00,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-13 11:34:00,828 INFO L87 Difference]: Start difference. First operand 6248 states and 9783 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 11:34:05,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:34:06,178 INFO L93 Difference]: Finished difference Result 13331 states and 21354 transitions. [2022-07-13 11:34:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 11:34:06,179 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2022-07-13 11:34:06,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:34:06,196 INFO L225 Difference]: With dead ends: 13331 [2022-07-13 11:34:06,196 INFO L226 Difference]: Without dead ends: 7047 [2022-07-13 11:34:06,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2022-07-13 11:34:06,231 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 1040 mSDsluCounter, 3071 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 482 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:34:06,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 3768 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 2041 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-07-13 11:34:06,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7047 states. [2022-07-13 11:34:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7047 to 6271. [2022-07-13 11:34:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6271 states, 5363 states have (on average 1.4944993473801977) internal successors, (8015), 5528 states have internal predecessors, (8015), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2022-07-13 11:34:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9806 transitions. [2022-07-13 11:34:06,492 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9806 transitions. Word has length 50 [2022-07-13 11:34:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:34:06,492 INFO L495 AbstractCegarLoop]: Abstraction has 6271 states and 9806 transitions. [2022-07-13 11:34:06,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 11:34:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9806 transitions. [2022-07-13 11:34:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 11:34:06,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:34:06,494 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:34:06,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 11:34:06,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 11:34:06,710 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:34:06,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:34:06,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1656968926, now seen corresponding path program 2 times [2022-07-13 11:34:06,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:34:06,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112649457] [2022-07-13 11:34:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:34:06,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:34:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:06,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:34:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 11:34:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:07,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 11:34:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:07,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:34:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:34:07,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:34:07,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112649457] [2022-07-13 11:34:07,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112649457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:34:07,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250582170] [2022-07-13 11:34:07,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 11:34:07,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:34:07,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:34:07,153 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) [2022-07-13 11:34:07,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:34:09,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 11:34:09,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:34:09,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2414 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 11:34:09,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:34:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:34:09,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:34:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:34:10,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250582170] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:34:10,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 11:34:10,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2022-07-13 11:34:10,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567760116] [2022-07-13 11:34:10,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 11:34:10,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 11:34:10,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:34:10,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 11:34:10,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-07-13 11:34:10,126 INFO L87 Difference]: Start difference. First operand 6271 states and 9806 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 11:34:15,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:16,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:34:16,881 INFO L93 Difference]: Finished difference Result 13497 states and 21603 transitions. [2022-07-13 11:34:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 11:34:16,882 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 53 [2022-07-13 11:34:16,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:34:16,902 INFO L225 Difference]: With dead ends: 13497 [2022-07-13 11:34:16,902 INFO L226 Difference]: Without dead ends: 7113 [2022-07-13 11:34:16,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-07-13 11:34:16,922 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 895 mSDsluCounter, 3658 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 423 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 4357 SdHoareTripleChecker+Invalid, 3032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:34:16,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 4357 Invalid, 3032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 2608 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-07-13 11:34:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2022-07-13 11:34:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 6337. [2022-07-13 11:34:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6337 states, 5429 states have (on average 1.488487750967029) internal successors, (8081), 5594 states have internal predecessors, (8081), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2022-07-13 11:34:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 9872 transitions. [2022-07-13 11:34:17,218 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 9872 transitions. Word has length 53 [2022-07-13 11:34:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:34:17,218 INFO L495 AbstractCegarLoop]: Abstraction has 6337 states and 9872 transitions. [2022-07-13 11:34:17,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 11:34:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 9872 transitions. [2022-07-13 11:34:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 11:34:17,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:34:17,220 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:34:17,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:34:17,438 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 [2022-07-13 11:34:17,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:34:17,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:34:17,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1523908574, now seen corresponding path program 3 times [2022-07-13 11:34:17,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:34:17,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076941970] [2022-07-13 11:34:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:34:17,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:34:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 11:34:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 11:34:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 11:34:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:17,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:34:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:34:17,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:34:17,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076941970] [2022-07-13 11:34:17,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076941970] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:34:17,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619849107] [2022-07-13 11:34:17,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 11:34:17,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:34:17,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:34:17,982 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) [2022-07-13 11:34:17,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process